Jungite

General Information:
 Chemical Formula:
Ca2Zn4Fe+++8(PO4)9(OH)9·16(H2O)
 Composition:
(Molecular Weight = 2,084.54 gm)
Calcium 3.85 % Ca
Zinc 12.55 % Zn
Iron 21.43 % Fe
Phosphorus 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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