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Kainosite-(Y)

Year of discovery: 1886 (Igletjødn quarry, Norway), 1983 (Japan)

Locality list: 4 localities of kainosite-(Y)

• Ca₂Y₂Si₄O₁₂CO₃,H₂O
• Ca₂(Y,Ce)₂Si₄O₁₂CO₃,H₂O
• [Ca²⁺₂][Y³⁺₂][CO₃|(SiO₃)₄]^10-,H₂O

• Class: Cyclosilicate (Single ring) - Carbonate
• Soluble in: HCl (Slowly with bubbles)
• Radioactive: Weak

• Color: Brown, Yellowish brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Distinct on {110} (2 planes)
• Hardness: 5-6
• Density: 3.5

• System: Orthorhombic
• Group: mmm, Pmnb
• Lattice: a=13.1, b=14.3, c=6.8