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Chalcopyrite & Chalcocite

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MNT100527

Chalcopyrite & Chalcocite

ex Dr. F. Krantz, Bonn, GER

Description Tabs

Description
Locality: 
Carrizal, Huasco Province, Atacama Region, Chile
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.5 × 6 × 3.2 cm
Description

A very nice ore specimen consisting of a sulfide bearing quartz vein with a vug hosting well developed chalcopyrite crystals which are covered by a thin blackish grey layer labeled to be chalcocite by Krantz. I tried to look up the given locality: no luck. (As Krantz had quite a lot of samples from Cerro Blanco, Chile, in stock it could be a mix up, but i will present only the information as given on the label). In any case, rare material not only because of the unusual locality.

Mineral Data
What's on the rock

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Chalcocite

Formula: 
Cu2S
Strunz: 
2.BA.05
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.0

Seller Information

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Seller's terms and conditions

Terms & Conditions

Thank you for your interest in my offers! Payment is possible via Paypal, bank transfer or cash if you pick up the item(s) personally. Bank data will be provided after settling the auction/transaction(s) if needed.

In case you are not happy with a specimen, you may send it back within 4 weeks. After receipt, i will refund the price minus shipping costs. Please inform me before sending an item back. If you have any questions (or maybe complaints) please feel free to contact me.

Best regards Roger