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Synchysite-(Y)

Year of discovery: 1966 (Scrub Oak mine (Replogle mine), USA), 1973 (Japan)

Locality list: A locality of synchysite-(Y)

• CaY(CO₃)₂F
• Ca(Y,Ce)(CO₃)₂F
• [Ca²⁺][Y³⁺][F|(CO₃)₂]^5-

• Class: Bastnäsite (Bastnasite) group
• Class: Carbonate - Fluoride
• Soluble in: HCl, HNO₃, H₂SO₄

• Y => Ce: Synchysite-(Ce)
• Y => Nd: Synchysite-(Nd)

• Color: White, Reddish brown, Grayish yellow
• Streak: Pale brown
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Indistinct on {0001} ( plane)
• Hardness: 6-6.5
• Density: 4.0

• System: Hexagonal
• Group: (-6)m2, P(-6)c2
• Lattice: a=7.1, c=18.2

Synonym: Doverite