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Tinticite

Year of discovery: 1946 (Tintic Standard mine, USA), 1986 (Japan)

Locality list: 2 localities of tinticite

• Fe₄(PO₄)₃(OH)₃,5H₂O
• Fe_5.3(PO₄)₄(OH)₄,6.7H₂O
• [Fe³⁺₄][(OH)₃|(PO₄)₃]^12-,5H₂O

• Class: Tinticite group
• Class: Phosphate - Hydroxide - Hydrate

• Color: Pale yellow
• Streak: White
• Luster: Earthy
• Diaphaneity: Translucent

• Hardness: 2.5
• Density: 2.9

• System: Triclinic
• Group: (-1), P(-1)
• Lattice: a=8.0, b=10.0, c=7.6, α=103.9, β=115.9, β=67.9