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Woodhouseite

Year of discovery: 1937 (Champion mine (White Mountain mine, Jeffrey mine), USA), 1985 (Japan)

Locality list: 12 localities of woodhouseite

• CaAl₃(PO₄)(SO₄)(OH)₆
• [Ca²⁺][Al³⁺₃][(OH)₆|SO₄|PO₄]^11-

• Class: Beudantite group < Alunite supergroup
• Class: Phosphate - Sulfate - Hydroxide
• Insoluble in: HCl, HNO₃, H₂SO₄

• Ca => Pb: Hinsdalite
• Ca => Sr: Svanbergite (Series)

• SO₄ => PO₄: Crandallite

• (PO₄)(SO₄) => (AsO₄)(HAsO₄): Arsenocrandallite

• Color: Colorless, Pink
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Perfect on {0001} (1 plane)
• Hardness: 4.5
• Density: 3.0

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=7.0, c=16.4