Formula: 4(Fe,Ni)S . 3(Mg,Fe)(OH)2
Origin of name: For P. Haapala, Finish geologist
Crystal system: Hexagonal
Crystal class: Unknown
Twinning:
Unit cell:
Colour: Bronze-red
Diaphaneity:
Luster: Metallic
Habit: Thin scales
Hardness: 1 to 1.5
Specific gravity: 3.58
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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