Formula: Zn(AsO3)(OH) . H2O
Origin of name: For Sigmund Koritnig, German petrologist
Crystal system: Triclinic, pseudomonoclinic
Crystal class: 1
Twinning:
Unit cell: a = 7.948, b = 15.829, c = 6.668, α = 90.86°, β = 96.56°, γ = 90.05°
Colour: Colourless, white, rose
Diaphaneity: Transparent
Luster: Vitreous, pearly on cleavage
Habit: Imperfect platy crystals, in aggregates
Hardness: 2
Specific gravity: 3.54
Cleavage: 3; {010} perfect, {001} and {100} in traces visible on {010}
Tenacity: Flexible
Streak: White
Synonyms/varieties:
Comments:
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