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Mitridatite

Year of discovery: 1914 (Mount Mithridat, Ukraine, and Kamysh-Burun Trough, Ukraine), 1977 (Japan)

Locality list: 5 localities of mitridatite

• Ca₂Fe₃O₂(PO₄)₃,3H₂O
• [Ca²⁺₂][Fe³⁺₃][O₂|(PO₄)₃]^13-,3H₂O

• Class: Mitridatite group
• Class: Oxide - Phosphate - Hydrate
• Soluble in: hot HCl, hot HNO₃, hot H₂SO₄

• Fe => Mn: Robertsite, Pararobertsite

• PO₄ => AsO₄: Arseniosiderite (Series)

• Color: Yellowish green, Grayish green, Greenish brown
• Streak: Pale green
• Luster: Waxy
• Diaphaneity: Translucent

• Cleavage: Good on {100} (1 plane)
• Hardness: 2.5
• Density: 3.2

• System: Monoclinic
• Group: 2/m, B2/b
• Lattice: a=17.5, b=19.4, c=11.3, β=95.9