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Stromeyerite

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MNT608776

Stromeyerite

ex Dr. F. Krantz, Bonn, GER; ex ?
Classic Locality

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Description
Locality: 
Guanajuato, Mexico
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.5 × 1.7 × 1.3 cm
Description

This is a small but nevertheless interesting pair of specimens: dark grey to blue grey masses of a sulfide found in the 19th century. One of the specimens (the larger) had a small paper label attached (removed for cleaning) identifying the sample as "Stromeyerin". The main label from an english speaking collector (the specimen comes from a suite at Krantz, Bonn, with M&M and some other old UK collectors) describes the samples as
Composite Copper Glance
a new variety
from Guanajuato, Mexico.
I did not find a reference for stromeyerite occurring in Guanajuato but several other mexican occurrences. I did not analyse the specimen so there may be the risk of a false ID.

Size is for the bigger of the two samples.

Mineral Data
What's on the rock

Stromeyerite

Formula: 
AgCuS
Strunz: 
2.BA.40
Crystal System: 
Orthorhombic - Dipyramidal
Hardness: 
2.5 - 3.0
Type Locality: 
Zmeinogorsk Mine (Zmyeinogorsk Mine; Snake Mountain Mine; Schlangenberg Mine), Zmeevka Stream, Korbalikha River, Alei River Basin, Rudnyi Altai, Altaiskii Krai, Western-Siberian Region, Russia

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

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