[ Top ] [ Japanese ]

Kamphaugite-(Y)

Year of discovery: 1987 (Hørtekollen, Norway), 2005 (Japan)

Locality list: 3 localities of kamphaugite-(Y)

• CaY(CO₃)₂(OH),H₂O
• Ca(Y,REE)(CO₃)₂(OH),H₂O
• [Ca²⁺][Y³⁺][OH|(CO₃)₂]^5-,H₂O

• Class: Carbonate - Hydroxide - Hydrate
• Radioactive: Weak
• Formed by alteration of Kuliokite-(Y).

• Y => Ce: Calcioancylite-(Ce)
• Y => La: Calcioancylite-(La)
• Y => Nd: Calcioancylite-(Nd)

• Color: Colorless, Pale brown
• Streak: White
• Luster: Vitreous
• Diaphaneity: Transparent

• Cleavage: No
• Hardness: 2-3
• Density: 3.2

• System: Tetragonal
• Group: 422, P4₁2₁2
• Lattice: a=7.4, c=21.8