General Information:
Chemical Formula:Mn5(SiO4)2(OH)2
Composition:(Molecular Weight = 492.87 gm)Manganese 55.73 %
MnSilicon 11.40 %
SiHydrogen 0.41 %
H Oxygen 32.46 %
O Empirical Formula: Mn2+5(SiO4)2(OH)2
Environment:Manganese vein deposits.
Locality:TL: Bald Knob, Alleghany Co., North Carolina, USA.
Name Origin:Named after its locality.
Physical Properties: Cleavage:None
Color:white, brown, bright pink, or grayish pink.
Density:4
Diaphaniety:Transparent to Subtransparent to translucent
Habits:Massive - Lamellar - Distinctly foliated fine-grained forms., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:6-5
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
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