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Stringhamite

Year of discovery: 1974 (Bawana mine, USA), 2001 (Japan)

Locality list: A locality of stringhamite

• CaCuSiO₄,H₂O
• [Ca²⁺][Cu²⁺][SiO₄]^4-,H₂O

• Class: Nesosilicate - Hydrate

• Color: Dark blue
• Streak: Pale blue
• Luster: Vitreous
• Diaphaneity: Transparent-Translucent

• Cleavage: Good on {001} (1 plane), Imperfect on {100} (1 plane)
• Density: 3.2

• System: Monoclinic
• Group: 2/m, P2₁/c
• Lattice: a=5.0, b=16.1, c=5.3, β=102.6