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Clinotobermorite

Year of discovery: 1989 (Japan as the first occurence in the World)

Locality list: A locality of clinotobermorite

• Ca₅Si₆O₁₆(OH)₂,4H₂O
• [Ca²⁺₅][(HSi₃O₉)₂]^10-,4H₂O

• Class: Tobermorite supergroup
• Class: Inosilicate (Single chain) - Hydrate

• 4H₂O => 2H₂O (Tobermorite-9Å): Riversideite
• 4H₂O => 5H₂O (Tobermorite-11Å): Tobermorite
• 4H₂O => 7H₂O (Tobermorite-14Å): Plombièrite (Plombierite)

• Color: Colorless, White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: Perfect on {001} (1 planes), Indistinct on {100} (1 plane)
• Hardness: 4.5
• Density: 2.6

• System: Monoclinic (2M), Triclinic (1A) (Order-Disorder polytype)
• Group: 2/m, Cc
• Lattice: a=11.3, b=7.3, c=22.6, β=97.3
• Group: 1, C1
• Lattice: a=11.3, b=7.3, c=11.5, α=99.2, β=97.2, γ=90.0