General Information:
Chemical Formula:Ca4Mn++Fe+++4(PO4)6(OH)4·12(H2O)
Composition:(Molecular Weight = 1,292.68 gm)Calcium 12.40 %
CaManganese 4.25 %
MnIron 17.28 %
FePhosphorus 14.38 %
P Hydrogen 2.18 %
H Oxygen 49.51 %
O Empirical Formula: Ca4Mn2+Fe3+4(PO4)6(OH)4·12(H2O)
IMA Status:Approved IMA
Locality:Mangualde pegmatite, Beira, Protugal.
Name Origin:Named for Peter Zodac (1894-1967), founder and editor of Rocks and Minerals.
Physical Properties: Cleavage:[010] Good
Color:light yellow, medium yellow, or colorless.
Density:2.68
Diaphaniety:Transparent
Habits:Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), ,
Hardness:4 - Fluorite
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:yellow white
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