[ Top ] [ Japanese ]

Defernite

Year of discovery: 1978 (Güneyce-Ikizdere, Turkey)

Locality list:

• Ca₆(CO₃)_1.58(Si₂O₇)_0.21(OH)₇[Cl_0.50(OH)_0.08(H₂O)_0.42]
• [Ca²⁺₆][(Cl_0.50(OH)_0.08(H₂O)_0.42|(OH)₇|(CO₃)_1.58|(Si₂O₇)_0.21]^12-

• Class: Sorosilicate - Carbonate - Chloride - Hydroxide
• Soluble in: HCl (with bubbles)

• Color: Colorless, Reddish brown
• Streak: White, Pink
• Luster: Sub-Vitreous, Waxy
• Diaphaneity: Transparent

• Cleavage: Perfect on {010} (1 plane), Distinct on {100} (1 plane)
• Hardness: 3
• Density: 2.3-2.5

• System: Orthorhombic
• Group: mmm, Pnma
• Lattice: a=17.9, b=22.8, c=3.7