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Sylvanite

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UVM568903

Sylvanite

A.L. Flagg

Description Tabs

Description
Locality: 
Alpine Horn, Sugarloaf, Boulder County, Colorado, United States of America
Class: 
Massive/Crystalline
Size Range: 
Thumbnail (1-3cm)
Size: 
2.8 × 1.7 × 1.6 cm
Description

An unusually rich specimen of sylvanite.   This specimen is essentially a solid mass of crystalline sylvanite with just a bit of matrix attached.   Old material from the collection of Arizona mineral legend A.L. Flagg (1892-1961).

Mineral Data
What's on the rock

Sylvanite

Formula: 
(Au,Ag)2Te4
Strunz: 
2.EA.05
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0
Type Locality: 
Baia de Arieş (Offenbánya), Alba Co., Romania

Seller Information

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