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Pinakiolite

#BAC63975

Pinakiolite

#BAC63975
Availability
Sold
Size
2.5 x 1.9 x 1.3 cm - Thumbnail 
Formula
(Mg,Mn2+)2(Mn3+,Sb5+)O2(BO3) (RRUFF)
Locality
Långban, Filipstad, Värmland, Sweden

Thin tabular or platy crystals of black to dark red Pinakiolite to 5mm in a white, granular Dolomite matrix. This a very good specimen showing typical Pinakiolite crystals and many shiny black equant crystals of Hausmannite.

Type Locality

Pinakiolite

Formula
(Mg,Mn2+)2(Mn3+,Sb5+)O2(BO3
Crystal System
Monoclinic 
Crystal Habit
Tabular 
Cleavage
Good, None, None 
Luster
Adamantine - Metallic 
Color
black 
Streak
brown gray 
Class
Monoclinic - Prismatic 
Fracture
Brittle 
Hardness

Data courtesy of Webmineral.

Collection
William & Anne Cook Collection
Special Info
Type Locality

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