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Taramellite & Pyrrhotite

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SHS142180

Taramellite & Pyrrhotite

Description Tabs

Description
Locality: 
Big Creek, Fresno County, California, United States of America
Size Range: 
Thumbnail (1-3cm)
Size: 
2.4 × 1.4 × 0.8 cm
Description

Taramellite and pyrrhotite in matrix

Mineral Data
What's on the rock

Taramellite

Formula: 
Ba4(Fe3+,Ti,Fe2+,Mg)4(B2Si8O27)O2Clx
Strunz: 
9.CE.20
Hardness: 
5.5
Colour: 
Red-brown
Type Locality: 
Candoglia quarries, Candoglia, Mergozzo, Verbano-Cusio-Ossola Province, Piedmont, Italy

Pyrrhotite

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