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Native Arsenic With Pharmacolite

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AST41115

Native Arsenic With Pharmacolite

Description Tabs

Description
Locality: 
Plaka Mines, Plaka, Lavrion District, Attiki Prefecture, Greece
Size Range: 
Cabinet (10-18 cm)
Size: 
10 × 7 × 4 cm
Description

A combination of two rarities from Lavrion mines.
Both native arsenic and pharmacolite are very rare and hard to find in Lavrion.This specimen combines both native arsenic (gray masses) and pharmacolite (white acicular crystals) well arraned at the upper zone of the specimen.
Amust for a Lavrion collector.

Mineral Data
What's on the rock

Arsenic

Formula: 
As
Strunz: 
1.CA.05
Crystal System: 
Trigonal
Hardness: 
3.5
Streak: 
Grey

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

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