Formula: Mg(AsO3OH).7H2O
Origin of name: for Karl Rössler, Germany
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: colourless, white
Diaphaneity: transparent
Luster: vitreous to dull
Habit: crystals short prismatic, small, rare, crusts fine grained or fibrous
Hardness: 2 to 3
Specific gravity: 1.93
Cleavage: 1; {111} imperfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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