"Mineral Classics" - Dealing in fine minerals and gems for over 35 years! Online for nearly 10 years!

 











*** Welcome to Mineral Classics! Saturday, October 25, 2014... Our database contains 2437 specimens, encompassing 176 species... Please be sure to check out our new fully searchable database feature (click on the Search Site button on the left side of the screen)




Colorado Minerals!


US$    € EURO    ¥ YEN    £ POUND    CAN$    AUS$    Note

(click on a page number to go to that page:)

1 2 3 4 5 6 7

 page 4 / 7  -  prev  -  203 specimens selected  -  next  -  bottom  -  Home 




(click on the pictures to enlarge)

Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92a.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92b.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92c.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92d.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92e.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92f.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92g.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92h.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b92i.JPG]


No. CO712B92 - $ 450.00

Chalcedony on Smoky Quartz “casts” after Laumontite

Locality: Buck Mine, Cripple Creek District, Teller County, Colorado

Specimen Size: 14.2 x 10.0 x 7.3 cm (cabinet)


This locality in the Cripple Creek District (purportedly in an old mine shaft) produced unique epimorphs or "casts" of Smoky Quartz and Chalcedony replacing Laumontite. The Smoky Quartz has a distinctive muted silvery-grey color, with very little luster and a somewhat stalactite-esque growth due to the way the Quartz overgrew the preexisting Laumontite. The lack of luster on the Quartz is most likely due to a micro coating of Chalcedony. The biggest problem that faced most of these specimens is serious damage, and this piece not only has excellent aesthetics, but is in great condition overall compared to most from the find that were in terrible shape and did not display very well. This is one of the best pieces of the material that I’ve offered for sale, and is a personal favorite of mine due its thick / stout nature. It is more than just a Quartz specimen. This is a unique discovery, and would make any Quartz or “cast” collector very happy. This piece was collected in 2010 by Quinton Cross and Ralph Buck. See http://www.mindat.org/photo-241718.html for a similar Quartz replacement specimen from Cripple Creek.



To order this specimen click here




(click on the pictures to enlarge)

Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93a.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93b.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93c.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93d.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93e.JPG] Chalcedony on Smoky Quartz “casts” after Laumontite from Buck Mine, Cripple Creek District, Teller County, Colorado [./colorado712/co712b93f.JPG]


No. CO712B93 - $ 150.00

Chalcedony on Smoky Quartz “casts” after Laumontite

Locality: Buck Mine, Cripple Creek District, Teller County, Colorado

Specimen Size: 6.7 x 6.1 x 3.7 cm (small cabinet)


This locality in the Cripple Creek District (purportedly in an old mine shaft) produced unique epimorphs or "casts" of Smoky Quartz and Chalcedony replacing Laumontite. The Smoky Quartz has a distinctive muted silvery-grey color, with very little luster and a somewhat stalactite-esque growth due to the way the Quartz overgrew the preexisting Laumontite. The lack of luster on the Quartz is most likely due to a micro coating of Chalcedony. The biggest problem that faced most of these specimens is serious damage, and this piece not only has excellent aesthetics, but is in great condition overall compared to most from the find that were in terrible shape and did not display very well. This is one of the best pieces of the material that I’ve offered for sale, and is more than just a Quartz specimen. This is a unique discovery, and would make any Quartz or “cast” collector very happy. This piece was collected in 2010 by Quinton Cross and Ralph Buck. See http://www.mindat.org/photo-241718.html for a similar Quartz replacement specimen from Cripple Creek.

To order this specimen click here




(click on the pictures to enlarge)

Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b94a.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b94b.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b94c.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b94d.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b94e.JPG]


No. CO712B94 - $ 200.00

Barite (great quality)

Locality: Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado

Specimen Size: 4.7 x 4.2 x 3.2 cm (miniature)
Largest Crystal: 6 mm


These are some of the best quality Barite crystals that I’ve seen from Muddy Creek, not to mention the habit that is so incredibly eye-catching. This miniature specimen features hundreds of sharp, rather lustrous, very well-formed, snow-white blades of Barite forming a beautiful “flower”-shaped group on minor matrix. The luster combined with the “stacked” or layered growth of the Barites is what makes the piece so good for the locality. Additionally, the crystals have a growth that is atypical compared to most I’ve seen from Muddy Creek. This is from a recent find (2010), and represents some of the best quality pieces to come out of this area in years.



To order this specimen click here




(click on the pictures to enlarge)

Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95a.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95b.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95c.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95d.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95e.JPG] Barite (great quality) from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b95f.JPG]


No. CO712B95 - $ 250.00

Barite (great quality)

Locality: Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado

Specimen Size: 6.1 x 4.7 x 2.3 cm (small cabinet)
Largest Crystal: 7 mm


These are some of the best quality Barite crystals that I’ve seen from Muddy Creek, not to mention the habit that is so incredibly eye-catching. This small cabinet specimen features hundreds of sharp, rather lustrous, very well-formed, snow-white blades of Barite forming a beautiful “flower”-shaped group. The added touch to the piece is that there is a slight blue color that can be seen in one of the top most crystals. This blue shade is rather rare in my experience with this material. The luster combined with the “stacked” or layered growth of the Barites is what makes the piece so good for the locality. Additionally, the crystals have a growth that is atypical compared to most I’ve seen from Muddy Creek. This is from a recent find (2010), and represents some of the best quality pieces to come out of this area in years.



To order this specimen click here




(click on the pictures to enlarge)

Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b96a.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b96b.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b96c.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b96d.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b96e.JPG]


No. CO712B96 - $ 140.00

Barite

Locality: Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado

Specimen Size: 3.6 x 3.3 x 2.3 cm (miniature)
Largest Crystal: 1.0 cm


These are some of the best quality Barite crystals that I’ve seen from Muddy Creek, not to mention the habit that is so incredibly eye-catching. This small miniature specimen features hundreds of sharp, rather lustrous, very well-formed, snow-white blades of Barite forming a beautiful “flower”-shaped group. The added touch to the piece is that there is a slight blue color that can be seen in one of the topmost crystals. This blue shade is rather rare in my experience with this material. The luster combined with the “stacked” or layered growth of the Barites is what makes the piece so good for the locality. Additionally, the crystals have a growth that is atypical compared to most I’ve seen from Muddy Creek. This is from a recent find (2010), and represents some of the best quality pieces to come out of this area in years.



To order this specimen click here




(click on the pictures to enlarge)

Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b97a.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b97b.JPG] Barite from Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado [./colorado712/co712b97c.JPG]


No. CO712B97 - $ 225.00

Barite

Locality: Muddy Creek, tributary of Crater Creek, Rio Grande County, Colorado

Specimen Size: 5.7 x 5.2 x 2.7 cm (small cabinet)
Largest Crystal: 2.5 cm across


A classic Muddy Creek Barite specimen featuring the well-known, “chalky” crystals with the slight silvery overtone. The piece is in excellent condition featuring a predominant 1 inch crystal at the top of the piece surrounded by smaller “blades” on matrix. Specimens with crystals this size are not common from this locality. A great display piece for a collector of the material.

To order this specimen click here




(click on the pictures to enlarge)

Siderite over Calcite on Quartz from Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado [./colorado712/co712b98a.JPG] Siderite over Calcite on Quartz from Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado [./colorado712/co712b98b.JPG] Siderite over Calcite on Quartz from Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado [./colorado712/co712b98c.JPG] Siderite over Calcite on Quartz from Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado [./colorado712/co712b98d.JPG] Siderite over Calcite on Quartz from Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado [./colorado712/co712b98e.JPG]


No. CO712B98 - $ 800.00

Siderite over Calcite on Quartz

Locality: Goodfro mine, Ouray, Ouray District (Uncompahgre District), Ouray County, Colorado

Specimen Size: 21.3 x 10.4 x 8.5 cm (large cabinet)
Largest Crystal: 9.0 cm


One of only a handful of these pieces I have seen from this locality that lies east of the famous Mineral Farm on the road up to the Camp Bird Mine. This piece, from what I’m told, is the largest of its kind in such great condition. A handful of scalenohedral Calcite crystals measuring up to 9.0 cm are covered by hundreds of small, golden-brown scalenohedral Siderite crystals. The piece is not a pseudomorph or even a “cast”, but simply a coating of Siderite on Calcite. The Siderite/Calcite crystals are aesthetically flaring out of a crystallized matrix of “Milky” Quartz. On the reverse side of the specimen, you can see an exposed crystal that shows the white Calcite inside of the fairly thick layer of overgrown Siderite. Great condition all the way around, as most of the crystals are undamaged. Certainly different from anything I’ve seen from Ouray County, and rarely available on the market. This was a very limited find, and to have a large cabinet with such great aesthetics and unique crystallization is hard to find from Colorado.



To order this specimen click here




(click on the pictures to enlarge)

Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99a.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99b.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99c.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99d.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99e.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99f.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99g.JPG] Quartz with Epidote from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b99h.JPG]


No. CO712B99 - $ 200.00

Quartz with Epidote

Locality: Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 6.2 x 5.1 x 2.4 cm (small cabinet)


From the famous replacement ore body in the Camp Bird Mine, we have seen some of the most interesting crystallized specimens from anywhere in the San Juans. This particular piece features dozens of bright, WATER-clear, rather lustrous, colorless hexagonal prisms of Quartz included with rarely seen beautiful pistachio green Epidote “needles”. Top quality Quartz crystals, and certainly hard to find on the market these days. No real damage to speak of on the piece.



To order this specimen click here




(click on the pictures to enlarge)

Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100a.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100b.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100c.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100d.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100e.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100f.JPG] Mn-bearing Calcite with Pyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b100g.JPG]


No. CO712B100 - SOLD

Mn-bearing Calcite with Pyrite

Locality: Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 9.2 x 8.3 x 4.7 cm (small cabinet)
Largest Crystal: 4.8 cm


The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, but literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado. Here we have a lovely display specimen loaded with soft pink, scalenohedra of Mn-bearing Calcite that are sprinkled with dozens of very sharp, highly lustrous cubes of Pyrite. The soft satiny luster on the Calcite crystals combined with the bright metallic Pyrite makes for an excellent contrast. Overall, the Calcite crystals are in good shape, but some of them are slightly contacted in areas. The piece displays well with great aesthetics, and is one of the better pink Calcites that I’ve offered from the Camp Bird Mine.



To order this specimen click here




(click on the pictures to enlarge)

Quartz coating Calcite on Quartz from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b101a.JPG] Quartz coating Calcite on Quartz from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b101b.JPG] Quartz coating Calcite on Quartz from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b101c.JPG] Quartz coating Calcite on Quartz from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b101d.JPG]


No. CO712B101 - $ 180.00

Quartz coating Calcite on Quartz

Locality: Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 5.8 x 5.0 x 2.0 cm (small cabinet)


The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, but literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens. This piece is loaded with dozens of pinkish-brown scalenohedra of Calcite which literally have Quartz on all sides. First, the Calcites are coated with a micro “druse” of sugary Quartz crystals which are sitting on lustrous, milky Quartz crystal matrix. Great quality overall with virtually no damage. Very unusual for the locality, and certainly worth picking up if you’re a Colorado collector.

To order this specimen click here




(click on the pictures to enlarge)

Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102a.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102b.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102c.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102d.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102e.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102f.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102g.JPG] Sphalerite from 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b102h.JPG]


No. CO712B102 - SOLD

Sphalerite

Locality: 2100’ Level, Gordon Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 6.6 x 5.3 x 4.8 cm (small cabinet)
Largest Crystal: 7 mm


ex.  Dave Bergman
ex.  Richard A. Kosnar and Brian Kosnar


This piece was collected by my grandfather, Dave Bergman, in 1972, and was part of my father’s collection for over 30 years. This somewhat sculptural, stacked “mound” of excellent, slightly reddish (mostly black) crystallized Sphalerite is associated with micro Quartz on the reverse side and underneath of the specimen. The crystals are pseudo-octahedral in habit, and a few of them even show slight “Spinel-Law” twinning! To top it off, the piece is honestly a “floater” showing no real point of attachment to the pocket wall! Virtually damage free, and it sits up and displays perfectly without the aid of a base or clay. The Camp Bird Mine is famous for its sulfide minerals, which are among the best in the state, and this specimen is not only a great crystallized example of a Camp Bird Sphalerite, but has also passed through three generations of my family.



To order this specimen click here




(click on the pictures to enlarge)

Quartz from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b103a.JPG] Quartz from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b103b.JPG] Quartz from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b103c.JPG]


No. CO712B103 - $ 165.00

Quartz

Locality: Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 5.1 x 5.0 x 4.8 cm (small cabinet)


ex.  Richard A. Kosnar


Here we have an elegant “floater” Quartz group featuring several sharp, lustrous, prismatic, translucent, doubly-terminated crystals flaring in all directions. I looked at the piece closely, and could not find a point of attachment anywhere on the bottom, but there are several individual Quartzes that obviously were loose when the piece was in crystallization, and then came together in a muddled group underneath. An aesthetic large miniature display piece, and a great overall specimen for a simple Colorado Quartz. The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens.



To order this specimen click here




(click on the pictures to enlarge)

Calcite from 230 feet above 7 Level on Raise to 5 Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b104a.JPG] Calcite from 230 feet above 7 Level on Raise to 5 Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b104b.JPG] Calcite from 230 feet above 7 Level on Raise to 5 Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b104c.JPG] Calcite from 230 feet above 7 Level on Raise to 5 Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b104d.JPG]


No. CO712B104 - $ 500.00

Calcite

Locality: 230 feet above 7 Level on Raise to 5 Level, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 13.2 x 10.2 x 4.7 cm (cabinet)
Largest Crystal: 2.1 cm


ex.  Dave Bergman
ex.  Richard A. Kosnar and Brian Kosnar


This piece was collected in 1976 by my grandfather, Dave Bergman, and was part of my father’s collection for over 20 years, and then came to me. The piece is loaded with dozens of sharp, translucent, modified rhombs of Calcite with a soft satiny white interior. Great quality all the way around, with only minor damage here and there. I’ve never seen a Calcite quite like this from the Camp Bird Mine, and the fact that it passed through three generations of my family makes it all the more special to me on a personal level. The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens.



To order this specimen click here




(click on the pictures to enlarge)

Fe and Mn bearing Dolomite (near Kutnohorite) with Quartz from 1400’ Level, Orphan Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b105a.JPG] Fe and Mn bearing Dolomite (near Kutnohorite) with Quartz from 1400’ Level, Orphan Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b105b.JPG] Fe and Mn bearing Dolomite (near Kutnohorite) with Quartz from 1400’ Level, Orphan Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b105c.JPG]


No. CO712B105 - $ 245.00

Fe and Mn bearing Dolomite (near Kutnohorite) with Quartz

Locality: 1400’ Level, Orphan Vein, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 5.3 x 4.6 x 2.6 cm (small cabinet)


ex.  Dave Bergman
ex.  Richard A. Kosnar and Brian Kosnar


This piece was collected in 1974 by my grandfather, Dave Bergman, and was part of my father’s collection for over 20 years, and then came to me. The piece features vitreous, tightly intergrown rhombs of soft orange-pink iron and manganese bearing Dolomite (approaching Kutnohorite chemically) which are associated with a few sharp, lustrous, gemmy colorless Quartz crystals on matrix. I’ve never seen a Dolomite quite like this from the Camp Bird Mine, and the fact that it passed through three generations of my family makes it all the more special to me on a personal level. The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens.



To order this specimen click here




(click on the pictures to enlarge)

Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106a.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106b.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106c.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106d.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106e.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106f.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106g.JPG] Calcite with Fluorite from Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b106h.JPG]


No. CO712B106 - $ 465.00

Calcite with Fluorite

Locality: Replacement Ore Body, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 14.7 x 10.8 x 6.6 cm (cabinet)
Largest Calcite 1.6 cm


The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens. Here we have a beautiful cabinet sized display specimen (nearly a large cabinet) filled with dozens of very sharp, incredibly well-formed scalenohedra of silvery-white Calcite which are associated with glassy, gem quality, crystals of “water-green” color Fluorite on a cavernous matrix. A great display specimen, with virtually no notable damage, that can be displayed from several angles. There was only one pocket of this material from the Camp Bird, and this specimen certainly is one of the better ones that I’ve seen.



To order this specimen click here




(click on the pictures to enlarge)

Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107a.JPG] Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107b.JPG] Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107c.JPG] Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107d.JPG] Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107e.JPG] Calcite from 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b107f.JPG]


No. CO712B107 - $ 150.00

Calcite

Locality: 5917 Raise, 10 Level, East Camp Bird vein, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 6.0 x 4.9 x 3.2 cm (small cabinet)
Largest “Spray”: 1.6 cm


This piece was collected around 30 years ago, when the Camp Bird was still in operation. The piece features several, very pale pink crystallized “sprays” of HIGHLY lustrous, gemmy(!), very well-formed, scalenohedral Calcite crystals aesthetically sitting on matrix. Great quality all the way around and very aesthetic to boot. Calcite like this is not common from the Camp Bird, and would make a superb addition to a Calcite suite or a Colorado collection. The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens.



To order this specimen click here




(click on the pictures to enlarge)

Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108a.JPG] Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108b.JPG] Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108c.JPG] Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108d.JPG] Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108e.JPG] Calcite with “Chlorite” from 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b108f.JPG]


No. CO712B108 - SOLD

Calcite with “Chlorite”

Locality: 500’ Stope, 2100’ Level, Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 4.6 x 3.1 x 2.3 cm (miniature)


A beautiful Calcite specimen from the famous Camp Bird Mine near Ouray featuring several sharp, well-formed, lustrous, gemmy / translucent scalenohedra which are associated with moss-green “Chlorite” which can best be seen inside the WATER-clear prisms of Quartz that are sprinkled throughout the specimen. Excellent quality, both in the Calcite and the Quartz, and the piece truly looks better in person than the photos might indicate. The famous Camp Bird Mine, which started operating in 1896, produced over 5 million Troy ounces of Gold and Silver combined in nearly a century. This locality not only produced native metals, with literally thousands of beautiful crystallized display specimens, including some of the best sulfides from Colorado, but it also produced some wonderful non-metallic specimens.



To order this specimen click here




(click on the pictures to enlarge)

Sphalerite (rare color) from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b109a.JPG] Sphalerite (rare color) from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b109b.JPG] Sphalerite (rare color) from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b109c.JPG] Sphalerite (rare color) from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b109d.JPG] Sphalerite (rare color) from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b109e.JPG]


No. CO712B109 - SOLD

Sphalerite (rare color)

Locality: Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado

Specimen Size: 5.0 x 4.0 x 1.5 cm (miniature)
Largest Crystal: 4 mm


This piece was collected by Joe Mattivi around 20 to 30 years ago. I can honestly say that this is the only Sphalerite that I have seen from the San Juans with this particular rich honey-orange color! The piece features several small, very gemmy, modified dodecahedral crystals of Sphalerite which are associated with sharp silvery cubic Galena and minor golden Pyrite on Quartz. This specimen comes from Robert Stoufer, and if it wasn’t for the fact that he personally knew that the piece came out of the Grizzly Bear Mine, I would have a hard time believing that this was genuine. If you’re a Colorado collector, this may not be a killer Sphalerite specimen, but it certainly is a superb reference piece from this famous mining district.



To order this specimen click here




(click on the pictures to enlarge)

Rhodochrosite on Quartz from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b110a.JPG] Rhodochrosite on Quartz from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b110b.JPG] Rhodochrosite on Quartz from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b110c.JPG] Rhodochrosite on Quartz from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b110d.JPG]


No. CO712B110 - $ 200.00

Rhodochrosite on Quartz

Locality: Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado

Specimen Size: 3.7 x 3.7 x 2.3 cm (miniature)
Largest Crystal: 7 mm


Some of the most noteworthy Rhodos from Ouray County are those from the Grizzly Bear Mine. This piece hosts a few sharp, translucent, well-formed simple rhombohedra of reddish-pink Rhodochrosite on Quartz and sulfide matrix. A great display specimen from this famous locality that was reopened in the 1980s in the Ouray Amphitheater when the Zanett Tunnel was driven to reconnect with the Grizzly Bear Mine on northwest slopes of Engineer Mountain. These pieces are few and far between nowadays, so don’t miss out on this one.

To order this specimen click here




(click on the pictures to enlarge)

Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111a.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111b.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111c.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111d.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111e.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b111f.JPG]


No. CO712B111 - SOLD

Rhodochrosite

Locality: Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado

Specimen Size: 4.7 x 3.7 x 2.1 cm (miniature)
Largest Crystal: 1.2 cm


Some of the most noteworthy Rhodos from Ouray County are those from the Grizzly Bear Mine. This piece hosts a few sharp, translucent, well-formed simple rhombohedra of vibrant reddish-pink Rhodochrosite on Quartz and sulfide matrix. Additionally, one can see hollow cavities or “casts” of Quartz replacing Anhydrite which is exceptionally rare in my experience with specimens from this mine. This piece was collected by Joe Mattivi in the 1980s. A great display specimen from this famous locality that was reopened in the 1980s in the Ouray Amphitheater when the Zanett Tunnel was driven to reconnect with the Grizzly Bear Mine on northwest slopes of Engineer Mountain. These pieces are few and far between nowadays, so don’t miss out on this one.



To order this specimen click here




(click on the pictures to enlarge)

Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b112a.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b112b.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b112c.JPG] Rhodochrosite from Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado [./colorado712/co712b112d.JPG]


No. CO712B112 - $ 60.00

Rhodochrosite

Locality: Zanett Tunnel, Grizzly Bear Mine, Ouray County, Colorado

Specimen Size: 2.1 x 1.4 x 0.7 cm (thumbnail)
Largest Crystal: 4 mm


Some of the most noteworthy Rhodos from Ouray County are those from the Grizzly Bear Mine. This piece hosts several, translucent, well-formed simple rhombohedra of soft reddish-pink Rhodochrosite on Quartz and sulfide matrix. This piece was collected by Joe Mattivi in the 1980s. A great thumbnail specimen from this famous locality that was reopened in the 1980s in the Ouray Amphitheater when the Zanett Tunnel was driven to reconnect with the Grizzly Bear Mine on northwest slopes of Engineer Mountain. These pieces are few and far between nowadays, so don’t miss out on this one. Better in person, and hard to photograph.

To order this specimen click here




(click on the pictures to enlarge)

Quartz (var: “Milky Quartz”) from Ohio Mine, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b113a.JPG] Quartz (var: “Milky Quartz”) from Ohio Mine, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b113b.JPG] Quartz (var: “Milky Quartz”) from Ohio Mine, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b113c.JPG] Quartz (var: “Milky Quartz”) from Ohio Mine, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b113d.JPG]


No. CO712B113 - $ 235.00

Quartz (var: “Milky Quartz”)

Locality: Ohio Mine, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado

Specimen Size: 7.8 x 5.1 x 4.6 cm (small cabinet)


ex.  Robert Stoufer


When it comes to “Milky Quartz”, the famous Ohio Mine in the Ouray Amphitheater has produced some of the finest in the world. The TOP “porcelain”-esque luster combined with the larger, very well-formed crystals make these more than just simple Quartzes. This specimen was collected by Robert Stoufer in 1989, and is a superb small cabinet display piece featuring a predominant, very sharp, HIGHLY lustrous, hexagonal prism of “Milky Quartz” which is dotted by dozens of small Quartz crystals of equal quality that are scattered all the way down three of the prism faces of the main crystal. To top it off, the matrix comprises additional sharp, HIGHLY lustrous crystals of similarly fine quality “Milky Quartz”. No damage, and just beautiful for the locality. Good Quartz specimens from this locality are among my favorite from Colorado, as they have such a distinctive appearance combined with the excellent quality.



To order this specimen click here




(click on the pictures to enlarge)

Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114a.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114b.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114c.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114d.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114e.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114f.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114g.JPG] Quartz with “Amethyst” tips from K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado [./colorado712/co712b114h.JPG]


No. CO712B114 - $ 345.00

Quartz with “Amethyst” tips

Locality: K. D. Pocket, in the Ouray Amphitheater, east and above the town of Ouray, Ouray County, Colorado

Specimen Size: 10.4 x 6.5 x 4.2 cm (cabinet)


ex.  Robert Stoufer


The Ouray Amphitheater has produced some of the most diverse and beautiful Quartz specimens from any locality in Colorado. This piece is one of the VERY few specimens of Amethyst that I’ve seen from the Ouray Amphitheater. I love this piece, because it’s so different from what I’m used to seeing from this area. The piece was collected by Robert Stoufer in 1992, and is one of the most unique and pleasing Quartz / Amethyst specimens that I know of. First off, the piece is nearly a “floater” showing only the smallest of points of attachment, and is crystallized 99.9% of the way around. The crystals flare in all directions, and some are even doubly-terminated as you rotate the piece in your hand. There is no real “display” side as I think the piece can be shown from about six different directions with pleasing results. Many of the Quartz crystals themselves show attractive tapered habit crystals with accentuating narrowing prisms. And don’t forget that the largest crystal on the piece shows a slight purple Amethyst color, which is almost unheard of from this area! If you collect specimens of Quartz from Colorado, don’t miss out on this beautiful display piece. A special mineral specimen from this well-known Quartz producing region.



To order this specimen click here




(click on the pictures to enlarge)

Fluorite from Topeka Mine, Topeka-Kentucky Giant vein, Brown Mountain, Ouray County, Colorado [./colorado712/co712b115a.JPG] Fluorite from Topeka Mine, Topeka-Kentucky Giant vein, Brown Mountain, Ouray County, Colorado [./colorado712/co712b115b.JPG] Fluorite from Topeka Mine, Topeka-Kentucky Giant vein, Brown Mountain, Ouray County, Colorado [./colorado712/co712b115c.JPG] Fluorite from Topeka Mine, Topeka-Kentucky Giant vein, Brown Mountain, Ouray County, Colorado [./colorado712/co712b115d.JPG]


No. CO712B115 - SOLD

Fluorite

Locality: Topeka Mine, Topeka-Kentucky Giant vein, Brown Mountain, Ouray County, Colorado

Specimen Size: 6.2 x 4.1 x 2.2 cm (small cabinet)
Largest Crystal: 1.5 cm


ex.  Robert Stoufer and Tom Rosemeyer


This is the only specimen of Fluorite from the Topeka mine that I’ve offered for sale. This locality is probably best known for its beautiful Anatase and Brookite micro specimens. When it comes to Fluorite from the San Juans, this habit is not common in my experience. The piece is loaded with several gemmy/translucent, soft green color modified tetrahexahedra of Fluorite on Quartz matrix. The specimen was collected by Robert Stoufer and Tom Rosemeyer in 1987. If you collect Colorado Fluorites, or Fluorites in general, this is a great reference specimen from a mine that very few people associate with Fluorite.



To order this specimen click here




(click on the pictures to enlarge)

Covellite with Pyrite from Genesee-Vanderbilt Mine, Red Mountain Mining District, Ouray County, Colorado [./colorado712/co712b116a.JPG] Covellite with Pyrite from Genesee-Vanderbilt Mine, Red Mountain Mining District, Ouray County, Colorado [./colorado712/co712b116b.JPG] Covellite with Pyrite from Genesee-Vanderbilt Mine, Red Mountain Mining District, Ouray County, Colorado [./colorado712/co712b116c.JPG] Covellite with Pyrite from Genesee-Vanderbilt Mine, Red Mountain Mining District, Ouray County, Colorado [./colorado712/co712b116d.JPG]


No. CO712B116 - SOLD

Covellite with Pyrite

Locality: Genesee-Vanderbilt Mine, Red Mountain Mining District, Ouray County, Colorado

Specimen Size: 3.5 x 2.5 x 1.8 cm (miniature)
Largest Crystal Group: 6 mm


When people think of Covellite from Colorado, the top specimens from Summitville come to mind, and not often does one think of Ouray County when it comes to this copper sulfide. This is one of the very few Covellites that I’ve offered from this locality, and certainly a worthwhile choice for anybody who collects this material. This mine is the only locality to produce Covellite in Ouray County. This piece was collected by Robert Stoufer on June 12, 2009. It features several metallic, iridescent, purplish-blue mini “rosettes” of Covellite which are associated with golden Pyrite on grey Quartz matrix. The largest “rosette” of Covellite measures 6 mm across.



To order this specimen click here




(click on the pictures to enlarge)

Calcite on Chalcedony from Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado [./colorado712/co712b117a.JPG] Calcite on Chalcedony from Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado [./colorado712/co712b117b.JPG] Calcite on Chalcedony from Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado [./colorado712/co712b117c.JPG] Calcite on Chalcedony from Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado [./colorado712/co712b117d.JPG] Calcite on Chalcedony from Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado [./colorado712/co712b117e.JPG]


No. CO712B117 - $ 300.00

Calcite on Chalcedony

Locality: Syracuse Mine (Bachelor-Syracuse Mine), Gold Hill District, Ouray County, Colorado

Specimen Size: 7.0 x 5.3 x 2.7 cm (small cabinet)
Largest Crystal Group: 1.8 cm


ex.  Dave Bergman
ex.  Richard Kosnar and Brian Kosnar


This piece was collected by my grandfather, Dave Bergman, in December of 1981 when he was working at the Bachelor-Syracuse Mine north of Ouray. Later it came to be part of my father’s collection, and finally was passed to me. It is, to the best of my knowledge, one of, if not THE best of these particular Calcites that I’ve seen from this locality. The color contrast is especially interesting and unique, featuring dozens of incredibly sharp and very gemmy, “feather”-like groups of intergrown scalenohedra of Calcite which are sitting atop sparkling, crystalline, striking, bluish-grey Chalcedony. Some people refer to these Calcites as being “milky”, but the quality on this specimen is far superior to that description, as the crystals are internally rather gemmy for this area, and in some cases, one can see right through them to the underlying matrix. This is the only piece of this material that we have left to offer, so don’t miss out!



To order this specimen click here




(click on the pictures to enlarge)

Sphalerite with Chalcopyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b118a.JPG] Sphalerite with Chalcopyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b118b.JPG] Sphalerite with Chalcopyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b118c.JPG] Sphalerite with Chalcopyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b118d.JPG] Sphalerite with Chalcopyrite from Camp Bird Mine, near Ouray, Ouray County, Colorado [./colorado712/co712b118e.JPG]


No. CO712B118 - SOLD

Sphalerite with Chalcopyrite

Locality: Camp Bird Mine, near Ouray, Ouray County, Colorado

Specimen Size: 3.2 x 2.6 x 2.1 cm (miniature)
Largest Crystal: 1.0 cm


A beautiful sulfide association specimen from the world famous Camp Bird Mine featuring a sharp and predominant modified tetrahedron of jet-black, lustrous Sphalerite with very smooth faces that sits above a “mound” of additional Sphalerite crystals of equal quality. The other end of the piece showcases a very sharp and lustrous, striated tetrahedral crystal of rich golden metallic Chalcopyrite. Lastly, one can see minor pistachio-green Epidote and small white Calcite on the reverse side of the piece, making this an ideal Camp Bird association piece. Great quality all the way around, and would make a great addition to any Colorado or sulfide mineral suite. The Camp Bird Mine is one of the most classic San Juan Mountain localities, and is famous for its sulfides. Some of the most attractive and impressive sulfide association specimens are found in this mine along with the Idarado Mine.



To order this specimen click here




(click on the pictures to enlarge)

Quartz “cast” after Anhydrite from North Side of Canyon Creek, Ouray, Ouray County, Colorado [./colorado712/co712b119a.JPG] Quartz “cast” after Anhydrite from North Side of Canyon Creek, Ouray, Ouray County, Colorado [./colorado712/co712b119b.JPG]


No. CO712B119 - $ 40.00

Quartz “cast” after Anhydrite

Locality: North Side of Canyon Creek, Ouray, Ouray County, Colorado

Specimen Size: 3.2 x 3.0 x 1.3 cm (miniature)


A beautiful, toenail-sized specimen from the famous Canyon Creek area that produced some of the most well-known Quartz “casts” from the state. For years, people have written that these epimorphs were replacements of Quartz after Barite, and I always contested that this couldn’t be the case, and that the “casts” were most likely after Anhydrite. Finally, it appears that somebody else is on board with me as I read from Bill Dameron on mindat that “Dr. Virgil Lueth, New Mexico Tech, concludes from studies (as-yet unpublished paper 4/2011) that these and all San Juan quartz epimorphs apparently after barite are in fact after anhydrite”. This piece features a very well-formed, thin epimorph of Quartz replacing Anhydrite with additional sugary Quartz crystals on minor matrix. Beautiful aesthetics and very eye-catching even for a smaller piece of the material.



To order this specimen click here




(click on the pictures to enlarge)

Quartz “cast” after Anhydrite from Silver Point Mine, Ouray County, Colorado [./colorado712/co712b120a.JPG] Quartz “cast” after Anhydrite from Silver Point Mine, Ouray County, Colorado [./colorado712/co712b120b.JPG] Quartz “cast” after Anhydrite from Silver Point Mine, Ouray County, Colorado [./colorado712/co712b120c.JPG]


No. CO712B120 - $ 200.00

Quartz “cast” after Anhydrite

Locality: Silver Point Mine, Ouray County, Colorado

Specimen Size: 9.1 x 7.8 x 3.6 cm (small cabinet)


A beautiful small cabinet sized specimen from the famous Silver Point Mine that produced some of the most well-known Quartz “casts” from the state. These specimens have been labeled as being Quartz after Barite pseudomorphs, but given the fact that Barite is chemically inert and nearly impossible to dissolve, it is almost certain that these pseudomorphs are Quartz replacing Anhydrite. Finally, it appears that somebody else is on board with me as I read from Bill Dameron on mindat that “Dr. Virgil Lueth, New Mexico Tech, concludes from studies (as-yet unpublished paper 4/2011) that these and all San Juan quartz epimorphs apparently after barite are in fact after anhydrite”. With that said, this specimen is a fine pseudomorph / cast consisting of hollow and blocky cavities of Quartz replacing the original mineral. The most attractive aspect of this specimen is the fact that the Quartz crystals are not microscopic or massive, but many of them are easily visible with the naked eye, and show absolutely water-clear transparency. Lastly, the interior of the specimen shows the distinctive brownish-red Hematite coating that is characteristic of these pieces. A wonderful specimen from a district that produced some of the most classic “casts” from all of Colorado.

To order this specimen click here




(click on the pictures to enlarge)

Quartz “cast” after Calcite from Crystal Cave, Ouray, Ouray County, Colorado [./colorado712/co712b121a.JPG] Quartz “cast” after Calcite from Crystal Cave, Ouray, Ouray County, Colorado [./colorado712/co712b121b.JPG]


No. CO712B121 - SOLD

Quartz “cast” after Calcite

Locality: Crystal Cave, Ouray, Ouray County, Colorado

Specimen Size: 5.3 x 3.8 x 3.2 cm (small cabinet)


These specimens are some of the most classic Quartz after Calcite pseudomorphs or "casts" from any world locality. This specimen is a fantastic example showing the perfect scalenohedral form of the previous Calcite crystals which were coated by a very small, almost "sugary", gem quality, colorless Quartz crystals. The Calcite crystals were then dissolved away by a solution that entered the pocket at a later date, leaving behind only the Quartz crystal "crust". A wonderful specimen from a district that produced some of the most classic "casts" from all of Colorado.



To order this specimen click here



(click on a page number to go to that page:)

1 2 3 4 5 6 7

 page 4 / 7  -  prev  -  203 specimens selected  -  next  -  top  -  Home