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Gold With Chrysocolla

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LGM638175

Gold With Chrysocolla

Ex Dr. Krantz, Bonn, Germany
Classic Locality

Description Tabs

Description
Locality: 
Nye County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
2.5 × 3.5 × 2.5 cm
Weight: 
29.00gr
Description

Lustrous crystalline gold blebs embedded in the apple- to grey-green chrysocolla layer at the top of the specimen. The rest of the matrix consists of quartz, partly emerald-green colored due to inclusions of an unidentified mineral, and brown limonite.

I did not find any reference for a Zuelfrey or Zwelfrey mine in Nye Co., Nevada. As there are countless gold mines and prospects, and the specimen is potentially old, maybe one of the experts can help here.

Mineral Data
What's on the rock

Gold

Formula: 
Au
Strunz: 
1.AA.05
Crystal System: 
Isometric
Hardness: 
2.5 - 3.0

Chrysocolla

Formula: 
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (x < 1)
Strunz: 
9.ED.20
Crystal System: 
Monoclinic
Hardness: 
2.5 - 3.5

Seller Information

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