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Sanbornite

Year of discovery: 1932 (Trumbull Peak deposit, USA), 1979 (Japan)

Locality list: A locality of sanbornite

• BaSi₂O₅
• [Ba²⁺₂][(Si₂O₅)₂]^4-

• Class: Phyllosilicate

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

• Cleavage: Perfect
• Hardness: 5
• Density: 3.7

• System: Orthorhombic
• Group: mmm, Pmnb
• Lattice: a=4.6, b=7.7, c=13.5