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Petzite & Electrum

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Petzite & Electrum

Description Tabs

Description
Locality: 
Cash Mine, Gold Hill, Boulder County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3.1 × 1.9 × 0.8 cm
Description

A polished section of SEM-EDS analysed petzite & electrum. Rare!

References:

Minerals of Colorado, updated & revised", by Eckel, Edwin B., 1997 & R.O. Meyer collection; U.S. Geological Survey Professional Paper 223

Mineral Data
What's on the rock

Petzite

Formula: 
Ag3AuTe2
Strunz: 
2.BA.75
Hardness: 
2.5 - 3.0
Type Locality: 
Sacarîmb (Sãcãrâmb; Szekerembe; Nagyág), Deva, Hunedoara Co., Romania

Electrum

Variety Of: 

Gold

Formula: 
Au
Strunz: 
1.AA.05
Hardness: 
2.5 - 3.0
Formula: 
(Au, Ag)
Strunz: 
1.AA.05
Hardness: 
0.0