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Reddingite

Year of discovery: 1878 (Fillow quarry (Branchville mine), USA), 1977 (Japan)

Locality list: A locality of reddingite

• Mn₃(PO₄)₂,3H₂O
• (Mn,Fe)₃(PO₄)₂,3H₂O
• [Mn²⁺₃][(PO₄)₂]^6-,3H₂O

• Class: Phosphate - Hydrate
• Soluble in: HCl, HNO₃, H₂SO₄

• Mn => Fe: Phosphoferrite (Series)

• Color: Colorless, Pale pink, Pale yellow
• Tarnish: Dark brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Poor on {010} (1 plane)
• Hardness: 3.5
• Density: 3.1

• System: Orthorhombic
• Group: mmm, Pmna
• Lattice: a=9.5, b=10.1, c=8.7