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Sarkinite

Year of discovery: 1885 (Harstigen mine, Sweden), 1989 (Japan)

Locality list: 2 localities of sarkinite

• Mn₂AsO₄(OH)
• [Mn²⁺₂][OH|AsO₄]^4-

• Class: Arsenate - Hydroxide
• Soluble in: HCl, HNO₃, H₂SO₄

• AsO₄ => PO₄: Triploidite

• Color: Red, Yellow
• Streak: Red, Yellow
• Luster: Greasy
• Diaphaneity: Opaque

• Cleavage: Distinct on {100} (1 plane)
• Hardness: 4-5
• Density: 4.1

• System: Monoclinic
• Group: 2/m, P2/m
• Lattice: a=12.8, b=13.6, c=10.2, β=108.8