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Pharmacolite Realgar & Calcite

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BCK720296

Pharmacolite Realgar & Calcite

Martin Jensen collection
Classic Locality

Description Tabs

Description
Locality: 
Getchell Mine, Humboldt County, Nevada, United States of America
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 1.8 × 1.9 cm
Description

You are bidding on a small thumbnail sample collected by Martin Jensen at the Getchell Mine in 1988. The sample hosts exceptional clusters of pharmacolite prisms in bundles on matrix with nice realgar crystals and small crystals of calcite. Martin notes on his label with this sample that this is an exceptional pharmacolite for the locality. 

Mineral Data
What's on the rock

Pharmacolite

Formula: 
Ca(HAsO4)·2H2O
Strunz: 
8.CJ.50
Crystal System: 
Monoclinic
Hardness: 
2.0 - 2.5
Streak: 
White
Type Locality: 
Sophia Mine, Böckelsbach valley, Wittichen, Schenkenzell, Black Forest, Baden-Württemberg, Germany

Realgar

Formula: 
As4S4
Strunz: 
2.FA.15a
Crystal System: 
Monoclinic
Hardness: 
1.5 - 2.0

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

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