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
More details...