Formula: (Mg,Mn)24Zn18Fe3(SO4)4(CO3)2(OH)81
Origin of name: For R. Hauck, American mineral collector
Crystal system: Hexagonal
Crystal class: 6/m 2/m 2/m
Twinning:
Unit cell:
Colour: Orange to yellow
Diaphaneity:
Luster:
Habit: Crystals tabular, in rosette-like groups
Hardness: 2 to 3
Specific gravity: 3.02
Cleavage: 1; {0001} perfect
Tenacity:
Streak: Light yellow
Synonyms/varieties:
Comments:
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