Bolivian Bournonite
To the best of my knowledge, I have directly
acquired/imported more of these fantastic new Bolivian
Bournonites than any other dealer in the country, and
I've kept my prices very fair. There were two separate
finds at Machacamarca. The difference between them
is that the first find had specimens on Quartz matrix
with associated rhombic Siderite and the second find
consisted of specimens on octahedral Pyrite plus
Quartz matrix also associated with rhombic Siderite. It
should be noted that specimens from the second find
were slightly better quality.
The quality of these crystals could hardly be any better.
While the crystals are typically more simplistic
(non-twinned) than the classic old specimens from
Herodsfoot, Cornwall, England, the luster and form is
as good as any locality has ever produced in this
quantity. The morphology of both localities is very
similar though as specimens from each mine have
associated tan colored Siderite crystals on Quartz
matrix. There are no "cruciform" twin crystals in these
lots from Bolivia like Herodsfoot, but nearly every
specimen is on matrix and most are highly aesthetic
and attractive.
Enjoy !!
No. Bltd 68 Bour
BOURNONITE on Quartz -
$300
A fine, sharp, lustrous, silver-grey tabular crystal on
micro Quartz crystals. There is some minor damage to
the smaller crystal on the side.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5 x 3.5 x 3 cm. (Crystal: 3 cm. across)
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To order this specimen click
here
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No. Bltd 22 Bour
BOURNONITE on Quartz and Pyrite -
(SOLD)
A magnificent, sharp, highly lustrous, silver-grey
tabular crystal on Quartz with octahedrons of Pyrite.
This is a great matrix specimen with a beautiful,
well-formed crystal.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 7 x 3.5 x 2.5 cm. (Crystal: 2 cm. across)
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To order this specimen click
here
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No. Bltd 27 Bour
BOURNONITE on Quartz and Pyrite -
$1,000
This is the largest specimen in the lot. The only crystal
on the specimen is fine, sharp, very attractive, with good
luster on a Quartz/Pyrite matrix. I decided not to trim
this piece into a smaller specimen because the
underlying rock is rather unsightly and would have
shown no matter where I decided to trim it.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 7 x 3.5 x 2.5 cm. (Crystal: 2 cm. across)
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here
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No. Bltd 18 Bour
BOURNONITE on Quartz and Pyrite -
$500
This specimen has approximately one dozen
extremely lustrous, sharp, well formed, attractive,
intergrown, silver-grey, tabular crystals on Quartz and
Pyrite.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 6 x 5 x 3 cm. (Crystal Group: 3 x 3.5 cm.
across)
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To order this specimen click
here
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No. Bltd 29 Bour
BOURNONITE -
$200
While perhaps this is not the most textbook crystal in
the world, it has a fantastic termination, which I've tried
to illustrated in the lower photo. I think it is fairly priced
for what it is.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5 x 4 x 0.5 cm.
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To order this specimen click
here
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No. Bltd 23 Bour
BOURNONITE on Quartz and Pyrite -
$400
This is a truly great, incredibly lustrous, sharp,
tabular, Bournonite crystal on a Quartz and Pyrite matrix.
A real cute "toenail" size specimen.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 3.5 x 2.6 x 2.5 cm. (Crystal: 2.4 cm.
across)
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To order this specimen click
here
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No. Bltd 78 Bour
BOURNONITE on Quartz with Pyrite -
$1,200
An outstanding "cabinet" size specimen with a large,
highly lustrous, sharp, well-formed, tabular,
silver color crystal on a sparkling Quartz and Pyrite
matrix.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 9.8 x 6.9 x 5.5 cm. (Crystal Size: 3 cm.)
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here
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No. Bltd 20 Bour
BOURNONITE on Quartz and Pyrite -
$900 (SOLD)
Many of these specimens display without the aid of a
stand, and this one is no exception. It has such great
aesthetics and the crystals are sharp, very lustrous,
well-formed, bright silver-grey color on a Quartz/Pyrite
matrix. The close-up photo of the "main" crystal on this
specimen was intended to show everyone how well
formed these crystals can be.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 7 x 5 x 2.5 cm. (Largest Crystal: 2.5 cm.
across)
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here
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No. Bltd 26 Bour
BOURNONITE -
$500
This specimen displays magnificently without the aid of
a stand or clay, and has a cute little "wing" of Quartz and
Pyrite to help hold it up. The Bournonite crystal is large,
sharp, lustrous, well-formed, highly displayable and
damage free.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 3.5 x 3 x 2 cm.
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No. Bltd 74 Bour
BOURNONITE with Quartz -
$250
This specimen is an interestingly shaped, sharp,
lustrous, grey crystal group with some minor Quartz.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5.5 x 5 x 2.5 cm.
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No. Bltd 71 Bour
BOURNONITE -
$200
An odd shaped, crystal group with many sharp, highly
lustrous faces and minor Quartz.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5.5 x 5 x 3 cm.
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To order this specimen click
here
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No. Bltd 79 Bour
BOURNONITE on Quartz with Siderite -
$200
This piece has a very large crystal for this material,
however, there is minor damage. This crystal has an
unusual shape due to fact that it might have been
contacted to the wall of the pocket when it was
collected, which is why it is less expensive than a
perfect crystal of this size. It is very lustrous with good
form. The matrix is crystallized micro Quartz with
greenish-brown rhombic Siderite.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5.8 x 5.6 x 4.5 cm. (Crystal Size: 4.2
cm. !!)
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here
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No. Bltd 1 Bour
BOURNONITE on Quartz-
$1,500
This really is the finest specimen in the lot for my taste.
The piece has an extremely large, very sharp, incredibly
lustrous, showy, well-formed, highly aesthetic crystal
group perched upon a microcrystalline Quartz matrix.
This "cabinet" size specimen is one the finest matrix
Bournonite specimens that I have seen from Bolivia.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 8 x 6 x 4 cm. (Crystal Group: 5.5 x 3 cm.
across)
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To order this specimen click
here
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No. Bltd 2 Bour
BOURNONITE on Quartz with Pyrite -
$350
A spectacular, sharp, spelendent, tabular "textbook"
crystal on Quartz with Pyrite. A sweet little "toenail" size
specimen.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 3.5 x 2.5 x 2.5 cm.
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here
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No. Bltd 5 Bour
BOURNONITE with Quartz -
$100
A nice, sharp, odd-shaped crystal group with minor
Quartz.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5 x 3.5 x 3 cm.
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To order this specimen click
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No. Bltd 6 Bour
BOURNONITE with Pyrite -
$400
This one is a bit different because it has an interesting
parallel crystal growth and it's on matrix. I admit that the
piece is not the best specimen in the lot, but could be
considered the most unique.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5 x 5 x 5.5 cm.
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To order this specimen click
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No. Bltd 73 Bour
BOURNONITE on micro Quartz -
$350 (SOLD)
Most of the specimens from the first find on the "grainy"
or microcrystalline Quartz had larger, but sometimes
more crude crystals. This piece has a very fine, sharp,
highly lustrous, incredibly well-formed crystal
group on matrix.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 4.5 x 3.5 x 3.5 cm. (Crystal: 2 cm.
across)
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here
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No. Bltd 4 Bour
BOURNONITE -
$200 (RESERVED)
The crystals on this specimen are quite sharp,
lustrous, and well-formed plus their arrangement on
the Quartz matrix is pretty attractive with the crystals
growing on a 90° angle opposite to one another.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 6 x 3.5 x 3 cm. (Crystal Group: 4 x 3.5
cm. across)
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here
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No. Bltd 72 Bour
BOURNONITE with Quartz/Siderite "stem" -
$400
This piece has an interesting combination of a fine,
large, sharp, lustrous, tabular crystal and a "stem" of
Quartz and Siderite extending from the bottom of the
crystal which acts as a natural stand. On the end of this
"stem" there is a small Bournonite crystal, which has
some minor damage.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 5.5 x 5 x 4 cm.
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To order this specimen click
here
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No. Bltd 77 Bour
BOURNONITE with Pyrite -
$200
This is a strange "miniature" size specimen consisting
of dozens of sharp, lustrous, tabular crystals. I think it
displays rather nicely and has an interesting
arrangement.
Locality: Viboras section (vein), Machacamarca Mine,
near Colavi, Department Potosi, Bolivia
Specimen Size: 4.7 x 4.5 x 3.6 cm.
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To order this specimen click
here
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