Enargites from the famous Longfellow Mine are amongst the best in the state, and these pieces are incredibly difficult to find in good display specimens such as this. This particular piece is from my own personal collection, and actually once belonged to Warren Prosser, the noted author and geologist who worked in the San Juan Mountains of Colorado. The piece plays host to dozens of sharp, rather lustrous, attractive, metallic silvery-black crystals with no matrix. If you are a Colorado collector, don’t let this one pass by, as it is a good representation for the species from this noted Enargite producer.
ex Brian Kosnar collection
Locality: North Ore Body, Longfellow Mine, Red Mountain Pass, San Juan County, Colorado
Specimen size: 3.8 x 2.9 x 0.9 cm (miniature)
Largest Crystal: 7 mm
Shipping from United States
1-3 business days
Estimated shipping times
- North America : 2 - 5 business days
- Europe : 7 - 14 business days
- Australia, New Zealand and Oceania : 10 - 20 business days
- Asia Pacific : 7 - 14 business days
I'll do my best to meet these shipping estimates, but can't guarantee them. Actual delivery time will depend on the shipping method you choose.
Customs and import taxes
Buyers are responsible for any customs and import taxes that may apply. I'm not responsible for delays due to customs.
Returns & Exchanges
I gladly accept returns, exchanges, and cancellations
Just contact me within: 14 days of delivery
Ship items back to me within: 30 days of delivery
Conditions of return
Buyers are responsible for return shipping costs. If the item is not returned in its original condition, the buyer is responsible for any loss in value.
Questions about your order?
Please contact me if you have any problems with your order.
Last updated 3 July 2022.
Additionally, I will make every reasonable effort to inform you when I interact with third parties with your information; however, you are solely responsible for reviewing, understanding, and agreeing to or not agreeing to any third-party privacy policies.
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How Long I Store Your Information
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I may store and process your information through third-party hosting services in the US and other jurisdictions. As a result, I may transfer your personal information to a jurisdiction with different data protection and government surveillance laws than your jurisdiction has. If I am required to transfer information about you outside of the EU, I rely on Privacy Shield as the legal basis for the transfer, as Google Cloud is Privacy Shield certified.
If you reside in certain territories, including the EU, you have a number of rights in relation to your personal information. While some of these rights apply generally, certain rights apply only in certain limited cases. Your rights are as follows:
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How to Contact Me
You may reach me with any concerns relating to privacy at firstname.lastname@example.org , or by mail at my physical address PO Box 620982 Littleton, CO 80126 United States addressed to Brian Kosnar Mineral Classics.
For purposes of EU data protection law, I, Angela Kosnar, am the data controller of your personal information. If you have any questions or concerns, you may contact me at email@example.com.