Reevesite

General Information:
 Chemical Formula:
Ni6Fe+++2(CO3)(OH)16·4(H2O)
 Composition:
(Molecular Weight = 868.02 gm)
Iron 12.87 % Fe
Nickel 40.57 % Ni
Hydrogen 2.79 % H 
Carbon 1.38 % C 
Oxygen 42.39 % O 
 Empirical Formula:
Ni6Fe3+2(CO3)(OH)16·4(H2O)
 IMA Status:
Approved IMA 1967
Physical Properties:
 Color:
green yellow or light yellow.
 Density:
2.8 - 2.88, Average = 2.84
 Diaphaniety:
Transparent
 Hardness:
2 - Gypsum
 Luster:
Pearly
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