Mineral description : Pinakiolite

Mineral class	Borates : Kotoite - Ludwigite group.
Chemical formula	(Mg,Mn)2(Mn,Sb)(BO5)
Crystal system	Monoclinic.
Habitus	As plates, strings or needles, often with striations and twinning.
Cleavage
Hardness	6
Density	3.88
Color	Black.
Streak	Brownish gray.
Luster
Description
Occurance
Associates
Notes	Type locality : Långban.
Locations	A rare mineral. Långban, Värmland. In hausmannite impregnated dolomite together with manganophyll and phlogopite.

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