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Austinite

Year of discovery: 1935 (Gold Hill mine, USA), 2017 (Japan)

Locality list: A locality of austinite

• CaZnAsO₄(OH)
• [Ca²⁺][Zn²⁺][OH|AsO₄]^4-

• Class: Adelite group
• Class: Arsenate - Hydroxide

• Ca => Pb: Arsendescloizite

• Zn => Cu: Conichalcite (Series)
• Zn => Co: Cobaltaustinite (Series)
• Zn => Ni: Nickelaustinite

• Color: Colorless, Pale yellow, Green
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent-Transparent

• Cleavage: Good on {011} (2 planes)
• Hardness: 4-4.5
• Density: 4.1

• System: Orthorhombic
• Group: 222, P2₁2₁2₁
• Lattice: a=7.5, b=9.0, c=5.9