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Cobaltkoritnigite

Year of discovery: 1980 (Schwarzenberg district, Germany), 1994 (Japan)

Locality list: A locality of cobaltkoritnigite

• CoHAsO₄,H₂O
• (Co,Zn)HAsO₄,H₂O
• [Co²⁺][HAsO₄]^2-,H₂O

• Class: Arsenate - Hydrate

• Co => Zn: Koritnigite
• Co => Cu: Geminite
• Co => Mn: Krautite

• Color: Reddish purple
• Streak: Pale pink
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {010} (1 planes), Good on {100} (1 plane)
• Hardness: 2-3
• Density: 3.4

• System: Triclinic
• Group: 2/m, P2₁/c
• Lattice: a=8.0, b=15.8, c=6.7, α=90.9, β=96.6, γ=90.0