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Ankerite & Siderite

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SHS36870

Ankerite & Siderite

ex. Dr. Wilke (Eppertshausen/Germany)

Description Tabs

Description
Locality: 
Coeur d'Alene District, Shoshone County, Idaho, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.6 × 2.3 × 1.7 cm
Description

Ankerite crystals on siderite crystals

Mineral Data
What's on the rock

Ankerite

Formula: 
Ca(Fe2+,Mg)(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal
Hardness: 
3.5 - 4.0
Streak: 
White
Type Locality: 
Styrian Erzberg, Eisenerz, Styria, Austria

Siderite

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