General Information:
Chemical Formula:Fe++2SiO4
Composition:(Molecular Weight = 203.78 gm)Iron 54.81 %
FeSilicon 13.78 %
SiOxygen 31.41 %
O Empirical Formula: Fe2+2(SiO4)
Environment:Ultra mafic silica-poor igneous rocks.
Locality:Lipari Islands, Sicily.
Physical Properties: Cleavage:[010] Indistinct
Color:brown, black, or black.
Density:4.39
Diaphaniety:Transparent to Translucent
Habits:Massive - Granular - Common texture observed in granite and other igneous rock., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,
Hardness:6.5 - Pyrite
Luminescence:None.
Luster:Vitreous (Glassy)
Streak:white
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