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Torbernite

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UVM631373

Torbernite

Radioactive

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Description
Locality: 
Silver Bell Mine, Mineral Mountain, Pima County, Arizona, United States of America
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.7 × 4.2 × 3.6 cm
Description

A rare locality specimen of torbernite, from the Silver Bell Mine!   This specimen features sharp microcrystals forming clusters on matrix.   Despite having produced the best torbernite specimens I'm aware of from Arizona, specimens from this locality are very rarely on the market.   This came from a sale at the Arizona Sonora Desert Museum several years ago.

Mineral Data
What's on the rock

Torbernite

Formula: 
Cu(UO2)2(PO4)2·12H2O
Strunz: 
8.EB.05
Crystal System: 
Tetragonal
Hardness: 
2.0 - 2.5
Type Locality: 
Johanngeorgenstadt, Johanngeorgenstadt District, Erzgebirge, Saxony, Germany

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