General Information:
Chemical Formula:
Ca3Mn++Sb+++++4O14
Composition:
(Molecular Weight = 886.16 gm)
Calcium 13.57 % Ca
Manganese 6.20 % Mn
Antimony 54.96 % Sb
Oxygen 25.28 % O
Empirical Formula:
Ca3Mn2+Sb4O14
Environment:
Rare accessory to Mn ores.
IMA Status:
Approved IMA
Locality:
Lanban, Varmland, Sweden.
Name Origin:
Named for F. Earl Ingerson (1906-1993), U. S. Geochemist.
Physical Properties:
Cleavage:
[0001] Perfect
Color:
brownish yellow.
Diaphaniety:
Transparent to Translucent
Habits:
Subhedral Crystals - Occurs as crystals which tend to exhibit a recognizable crystal shape., ,
Hardness:
6.5 - Pyrite
Luster:
Vitreous (Glassy)
Streak:
brownish yellow
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