Formula: CaMg3(CO3)4
Origin of name: For Walter Hunt, American mineralogist
Crystal system: Hexagonal
Crystal class: 32
Twinning:
Unit cell: a = 9.5027, c = 7.8212
Colour: White
Diaphaneity:
Luster: Earthy, dull
Habit: Massive, compact, chalk-like; fine-grained and fibrous (sub-microscopic)
Hardness: 1-2
Specific gravity: 2.69
Cleavage: None
Tenacity: Brittle, conchoidal fracture
Streak: White
Synonyms/varieties:
Comments: Isostructural with daqingshanite. Fluorescent
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