General Information:
Chemical Formula:
(Mn++,Mg)35Sb3(Mn+++,Fe+++)9(BO3)16O32
Composition:
(Molecular Weight = 4,748.64 gm)
Magnesium 7.17 % Mg
Manganese 33.26 % Mn
Iron 1.47 % Fe
Boron 7.28 % B
Antimony 7.69 % Sb
Oxygen 43.13 % O
Empirical Formula:
Mn2+21Mg14Sb3Mn3+7.75Fe0+1.25(BO3)16O32
IMA Status:
Approved IMA 1986
Locality:
Kittel mine, Varmland, Sweden.
Name Origin:
Named for Fritz Blatter (1943-), German mineral collector, who discovered the mineral.
Physical Properties:
Cleavage:
[001] Perfect
Color:
black.
Density:
4.7
Diaphaniety:
Opaque
Habits:
Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., ,
Hardness:
6 - Orthoclase
Luster:
Sub Metallic
Streak:
brown
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