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Churchite-(Y)

Year of discovery: 1865 (Maffei mine (Nitzelbuch mine), Germany), 1975 (Japan)

Locality list: 9 localities of churchite-(Y)

• YPO₄,2H₂O
• (Y,Nd)PO₄,2H₂O
• [Y³⁺][PO₄]^3-,2H₂O

• Class: Phosphate - Hydrate
• Soluble in: hot HCl, hot HNO₃, hot H₂SO₄
• Fluorescence: Thermoluminescence

• Y => Nd: Churchite-(Nd)

• Color: Colorless, White
• Streak: White
• Luster: Vitreous
• Diaphaneity: Translucent

• Cleavage: Perfect on {101} (1 plane)
• Hardness: 3
• Density: 3.1

• System: Monoclinic
• Group: 2/m, A2/a
• Lattice: a=5.6, b=15.0, c=6.3, β=117.8

Synonym: Weinschenkite