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Hingganite-(Y)

Year of discovery: 1983 (Greater Hinggan Mountains, China), 1987 (Japan)

Locality list: 5 localities of hingganite-(Y)

• YBeSiO₄(OH)
• (Y,REE,Ca)₂([],Fe²⁺)Be₂Si₂O₈(OH,O)₂
• [Y³⁺][Be²⁺][OH|SiO₄]^5-

• Class: Hingganite series - Datolite group
• Class: Nesosilicate - Hydroxide
• Radioactive: Weak

• Y => Ce: Hingganite-(Ce)
• Y => Yb: Hingganite-(Yb)

• Color: Green, Yellowish brown, White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: No
• Hardness: 6-7

• System: Monoclinic
• Group: 2/m, P2₁/a
• Lattice: a=4.8, b=7.5, c=10.0, β=91.0