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Arsenic Pyrargyrite & Siderite

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MNR687630

Arsenic Pyrargyrite & Siderite

Description Tabs

Description
Locality: 
Třebsko, Příbram, Central Bohemian Region, Czech Republic
Class: 
Massive/Crystalline
Size Range: 
Small cabinet (7-10 cm)
Size: 
7.3 × 3.2 × 2.6 cm
Description

Nice black botryoidal arsenic with cherry red pyrargyrite. Older sample coming from 1990s.

Mineral Data
What's on the rock

Arsenic

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

Pyrargyrite

Formula: 
Ag3SbS3
Strunz: 
2.GA.05
Crystal System: 
Trigonal - Ditrigonal Pyramidal
Hardness: 
2.5

Siderite

Formula: 
FeCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.5
Streak: 
White