General Information:
Chemical Formula:(Mn,Ca,Fe,Mg)++4(Mn,Fe)9Sb+++++[O16(SiO4)2]
Locality:At Langbanshyttan, Vermland, Sweden and the Sjo mines near Orebro in Orebro.
Name Origin:After its locality.
Physical Properties: Cleavage:[???] Good
Color:iron black.
Density:4.91
Diaphaniety:Opaque
Habits:Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Crystalline - Coarse - Occurs as well-formed coarse sized crystals.,
Hardness:6.5 - Pyrite
Luster:Metallic
Streak:grayish black
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