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Britholite-(Ce)

Year of discovery: 1897 (Greenland), 2018 (Japan)

Locality list: A locality of britholite-(Ce)

• (Ce,Ca)5(SiO₄)₃(OH)
• [Ca²⁺₂][Ce³⁺₃][OH|(SiO₄)₃]^13-

• Class: Britholite group - Apatite supergroup
• Class: Nesosilicate - Hydroxide

• Ce₅ => Ca₂Y₃ => : Britholite-(Y)

• Color: Brown, Yellow, Black
• Streak: Pale brown
• Luster: Vitreous, Greasy

• Hardness: 5.5
• Density: 4.3

• System: Hexagonal
• Group: 6/m, P6₃/m
• Lattice: a=9.6, c=7.0