Formula: Cu4Pb2SO4Cl6(OH)4.2H2O
Origin of name: Named after Andreas Arzruni (1847-1898), German mineralogist, University of Aachen.
Crystal system: Orthorhombic
Crystal class:
Twinning:
Unit cell:
Colour: Blue, bluish green
Diaphaneity:
Luster:
Habit: Prismatic, slender
Hardness:
Specific gravity:
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments: Probably not a valid mineral species
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