General Information:
Chemical Formula:Ca2Zn4Fe+++8(PO4)9(OH)9·16(H2O)
Composition:(Molecular Weight = 2,084.54 gm)Calcium 3.85 %
CaZinc 12.55 %
ZnIron 21.43 %
FePhosphorus 13.37 %
P Hydrogen 1.98 %
H Oxygen 46.82 %
O Empirical Formula: Ca2Zn4Fe3+8(PO4)9(OH)9·16(H2O)
IMA Status:Approved IMA 1980
Locality:Hagendorf Sud pegmatite, Barvaria, Germay.
Name Origin:Named for Gerhard Jung, German minneral collector who found the mineral.
Physical Properties: Cleavage:[010] Perfect
Color:dark green, yellow, or green yellow.
Density:2.843
Habits:Rosette - Bundled tabular aggregates resembling rose flower petals., Tabular - Form dimensions are thin in one direction.,
Hardness:1 - Talc
Luster:Vitreous - Silky
Streak:yellow
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