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Ullmannite Bottinoite Ankerite

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ESM500408

Ullmannite Bottinoite Ankerite

Description Tabs

Description
Locality: 
Dörnberg Mine, Ramsbeck, Bestwig, Arnsberg, North Rhine - Westphalia, Germany
Class: 
Single Crystal
Size Range: 
Thumbnail (1-3cm)
Size: 
1.5 × 2.6 × 2.2 cm
Description

Metallic ullmannite cubes on ankerite crystals, one cube covered by bottinoite

 

Mineral Data
What's on the rock

Ullmannite

Formula: 
NiSbS
Strunz: 
2.EB.25
Crystal System: 
Isometric
Hardness: 
5.0 - 5.5
Type Locality: 
Storch und Schöneberg Mine, Gosenbach, Siegerland, North Rhine-Westphalia, Germany

Bottinoite

Formula: 
Ni2+[Sb(OH)6]2·6H2O
Strunz: 
4.FH.05
Crystal System: 
Trigonal
Hardness: 
3.5
Type Locality: 
Bottino Mine, Stazzema, Apuan Alps, Lucca Province, Tuscany, Italy

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