Haapalaite

General Information:
 Chemical Formula:
2(Fe,Ni)S·1.6(Mg,Fe++)(OH)2
 Composition:
(Molecular Weight = 276.87 gm)
Magnesium 12.29 % Mg
Iron 34.29 % Fe
Nickel 10.60 % Ni
Hydrogen 1.16 % H 
Sulfur 23.16 % S 
Oxygen 18.49 % O 
 Empirical Formula:
Fe2+1.5Ni0.5S2Mg1.4Fe2+0.21.6(OH)2
 IMA Status:
Approved IMA 1973
 Locality:
Kokka serpentinite, near Outokumpu, Finland.
 Name Origin:
Named for Paavo Haapala (1906-), Finnish geologist.
Physical Properties:
 Cleavage:
[???] Good
 Color:
bronze red.
 Density:
3.576
 Diaphaniety:
Opaque
 Habits:
Thin - Flat dimensioned crystals., Scaly - Morphology like fish scales.,
 Hardness:
1 - Talc
 Luster:
Metallic
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