General Information:
Chemical Formula:Mn++2SiO3·(H2O)
Composition:(Molecular Weight = 203.98 gm)Manganese 53.87 %
MnSilicon 13.77 %
SiHydrogen 0.99 %
H Oxygen 31.38 %
O Empirical Formula: Mn2+2SiO3·(H2O)
Environment:In a vug in manganese ore.
IMA Status:Approved IMA
Locality:The N,chwaning II Mine, Kalahari Manganese Field, Northern Cape Province, Republic of South Africa.
Name Origin:Named for its locality.
Physical Properties: Cleavage:[100] Perfect, [010] Perfect
Color:light brown.
Density:3.19
Diaphaniety:Transparent
Habits:Spherical - Spherical, rounded aggregates., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Acicular - Occurs as needle-like crystals.
Hardness:5.5 - Knife Blade
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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