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Dmisteinbergite

Year of discovery: 1989 (Coal mine no.45, Kopeisk, Russia), 2013 (Japan)

Locality list: A locality of dmisteinbergite

• CaAl₂Si₂O₈
• [Ca²⁺][(AlSiO₄)₂]^2-

• Class: Phyllo-Aluminosilicate

• Polymorph: Anorthite (Triclinic), Svyatoslavite (Monoclinic)

• Ca => Ba: Celsian, Paracelsian
• Ca => Sr: Slawsonite

• CaAl => (Na,K)Si: Anorthoclase
• CaAl => RbSi: Rubicline
• CaAl => NaSi: Albite, Kumdykolite, Lingunite
• CaAl => KSi: Orthoclase, Adularia, Microcline, Sanidine

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

• Habit: Platy
• Aggregate: Radial

• Cleavage: Perfect (1 plane)
• Hardness: 6
• Density: 2.7

• System: Hexagonal
• Group: 6mmm, P6/mmm
• Lattice: a=5.1, c=14.8