General Information:
Chemical Formula:Ca3Mn++Sb+++++4O14
Composition:(Molecular Weight = 886.16 gm)Calcium 13.57 %
CaManganese 6.20 %
MnAntimony 54.96 %
SbOxygen 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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