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Pyrrhotite

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PMN743775

Pyrrhotite

Description Tabs

Description
Locality: 
Bairendaba, Hexigten Banner, Ulanhad League, Inner Mongolia, China (Peoples Republic)
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
4 × 7 × 5 cm
Largest Crystal: 
2.60cm
Weight: 
197.00gr
Description

From a new find in Inner Mongolia comes this good pyrrhotite cluster, the crystals are very lustrous and thick, about 3-4 mm , unsual for this mineral. Irone stained muscovite is the matrix and some purple fluorite bit are showing indicating this piece came from the same zone as the 'window' fluorites. 

Mineral Data
What's on the rock

Pyrrhotite

Formula: 
Fe1-xS (x = 0 to 0.17)
Strunz: 
2.CC.10
Crystal System: 
Monoclinic
Hardness: 
3.5 - 4.0