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Arsenopyrite With Dolomite On Magnetite On Löllingite

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PMN742951

Arsenopyrite With Dolomite On Magnetite On Löllingite

Description Tabs

Description
Locality: 
Huanggang Mine, Ulanhad League, Inner Mongolia, China (Peoples Republic)
Class: 
Combination
Size Range: 
Small cabinet (7-10 cm)
Size: 
7 × 3 × 3 cm
Largest Crystal: 
1.00cm
Weight: 
307.00gr
Description

A classic combination piece from Hunanggang, the matrix starts with Lollingite on which a layer of magnetite was deposited, on that a half round cluster of arsenopyrite has formed. To add contrast some dolomite and calcite is present. A very representative mineral specimens of those early finds in Inner Mongolia. Please ask if you'd like to see a video. 

Mineral Data
What's on the rock

Arsenopyrite

Formula: 
FeAsS
Strunz: 
2.EB.20
Crystal System: 
Monoclinic
Hardness: 
5.5 - 6.0

Dolomite

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

Magnetite

Formula: 
Fe2+Fe3+2O4
Strunz: 
4.BB.05
Crystal System: 
Isometric
Hardness: 
5.5 - 6.5
Streak: 
Black

Löllingite

Formula: 
FeAs2
Strunz: 
2.EB.15a
Crystal System: 
Orthorhombic
Hardness: 
5.0 - 5.5
Type Locality: 
Wolfbau Mine, Lölling District, Hüttenberger Erzberg, Hüttenberg, Friesach - Hüttenberg area, Carinthia, Austria
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