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Siderite Pyrite & Schorl

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CLB161991

Siderite Pyrite & Schorl

Classic Locality

Description Tabs

Description
Locality: 
Freiberg, Saxony, Germany
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 6.6 × 2.5 cm
Description

Very nice, platy, pale brown siderite crystals with brassy pyrite. Lustrous black schorl (?) in siderite matrix (backside, not pictured), originally misinterpreted as fluorite (? - old sticker).
Very old, classic specimen.

Mineral Data
What's on the rock

Siderite

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

Pyrite

Formula: 
FeS2
Strunz: 
2.EB.05a
Crystal System: 
Isometric
Hardness: 
6.0 - 6.5

Schorl

Formula: 
Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Strunz: 
9.CK.05
Hardness: 
7.0

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