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Bottinoite Dolomite Quartz & Ullmannite

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POL857091

Bottinoite Dolomite Quartz & Ullmannite

Classic Locality

Description Tabs

Description
Locality: 
Dörnberg Mine, Ramsbeck, Bestwig, Arnsberg, North Rhine - Westphalia, Germany
Class: 
Crystals on Matrix
Size Range: 
Thumbnail (1-3cm)
Size: 
1.8 × 1.2 × 0.5 cm
Description

Beautiful rich specimen of well formed, pale blue-green crystals of rare Bottinoite with cream Dolomite, clear Quartz with minor metallic Ullmanite from classic locality.

Mineral Data
What's on the rock

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

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White

Quartz

Formula: 
SiO2
Strunz: 
4.DA.05
Crystal System: 
Trigonal
Hardness: 
7.0
Streak: 
White

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

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