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Miyawakiite-(Y)

Year of discovery: 2024 (Japan as the first occurence in the world)

Locality list: A locality of miyawakiite-(Y)

• Y₄Fe₂Si₈O₂₀(CO₃)₄(H₂O)₃
• [][Y³⁺₄][Fe²⁺₂][(H₂O)₃|(CO₃)₄|Si₈O₂₀]^16-

• Class: Tectosilicate - Carbonate

• Color: Pale yellow
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: None
• Hardness: 3 - 4
• Density: 2.95

• System: Tetragonal
• Group: 4/m, I4/mcm
• Lattice: a=17.5, c=9.6