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Stronalsite

Year of discovery: 1983 (Japan as the first occurence in the World)

Locality list: 5 localities of stronalsite

• SrNa₂Al₄Si₄O₁₆
• [Sr²⁺][Na⁺₂][(AlSiO₄)₄]^4-

• Class: Banalsite group
• Class: Tecto-Aluminosilicate

• Sr => Ba: Banalsite (Series)
• Sr => Ca: Lisetite

• Na₂ => Sr: Slawsonite

• Color: White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Opaque

• Cleavage: No, Parting on {100} and {001} (2 planes)
• Hardness: 6.5
• Density: 3.0

• System: Orthorhombic
• Group: mm2, Iba2
• Lattice: a=8.4, b=9.9, c=16.7