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Svanbergite

Year of discovery: 1854 (Hålsjöberg, Sweden), 1995 (Japan)

Locality list: 6 localities of svanbergite

• SrAl₃(PO₄)(SO₄)(OH)₆
• [Sr²⁺][Al³⁺₃][(OH)₆|SO₄|PO₄]^11-

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

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

• SO₄ => HPO₄: Goyazite

• PO₄ => AsO₄: Kemmlitzite

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

• Color: Colorless, Yellowish brown, Pink
• Streak: White
• Luster: Adamantine
• Diaphaneity: Translucent

• Cleavage: Distinct on {0001} (1 plane)
• Hardness: 5
• Density: 3.2

• System: Trigonal
• Group: (-3)m, R(-3)m
• Lattice: a=7.0, c=16.6