Formula: (Mg,Mn)Mn3O7 . 3H2O
Origin of name: After locality; Jianshui County, Yunnan, China
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Brown to brownish black
Diaphaneity: Opaque
Luster:
Habit: Soft porous aggregates, massive, grains 1 x 5 µm
Hardness:
Specific gravity: 3.60
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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