Calcioferrite

General Information:
 Chemical Formula:
Ca4Fe++(Fe+++,Al)4(PO4)6(OH)4·12(H2O)
 Composition:
(Molecular Weight = 1,233.18 gm)
Calcium 13.00 % Ca
Magnesium 1.97 % Mg
Aluminum 2.19 % Al
Iron 13.59 % Fe
Phosphorus 15.07 % P 
Hydrogen 2.29 % H 
Oxygen 51.90 % O 
 Empirical Formula:
·12(H2O)Ca4MgFe3+3Al(PO4)6(OH)4
 Environment:
Found in a bed of Tertiary clay. The Fe-analog of montgomeryite.
 Locality:
Battenberg, Bavaria, Germany.
 Name Origin:
Named for its compostion.
Physical Properties:
 Cleavage:
[???] Perfect, [???] Very Good
 Color:
greenish yellow, yellow, yellow green, or yellowish white.
 Density:
2.53
 Diaphaniety:
Translucent to Opaque
 Habits:
Foliated - Two dimensional platy forms., Reniform - "Kidney like" in shape (e.g.. hematite).,
 Hardness:
2.5 - Finger Nail
 Luster:
Pearly
 Streak:
yellowish white
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