General Information:
Chemical Formula:Mn++3(PO4)2·3(H2O)
Composition:(Molecular Weight = 408.80 gm)Manganese 40.32 %
MnPhosphorus 15.15 %
P Hydrogen 1.48 %
H Oxygen 43.05 %
O Empirical Formula: Mn2+3(PO4)2·3(H2O)
IMA Status:Approved IMA 1976
Locality:Branchville, in the town of Redding, Fairfield Co., Connecticut.
Name Origin:Named after its locality.
Physical Properties: Cleavage:[010] Indistinct
Color:white, yellowish white, colorless, reddish brown, or dark brown.
Density:3.1
Diaphaniety:Transparent to Translucent
Habits:Granular - Generally occurs as anhedral to subhedral crystals in matrix., Crystalline - Fine - Occurs as well-formed fine sized crystals.,
Hardness:3.5 - Copper Penny
Luminescence:Non-fluorescent.
Luster:Vitreous - Resinous
Streak:white
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