Cheralite

minerals

chrysoberyl

zircon

thorite

Formula: CaTh(PO4)2
Anhydrous normal phosphate, monazite group
Specific gravity: 4 72 to 5.02
Hardness: 5
Streak:
Colour: Greyish brown to reddish brown (on rims), pale yellow, brownish green, brown-grey in thin section
Common impurities: Si,REE
Environments

Pegmatites
Carbonatites

Common associates of cheralite include albite, columbite-(Mn), hafnium-bearing zircon, huttonite and spodumene (Mindat).

Localities

At Mount Weld, Laverton Shire, Western Australia, Australia, cheralite occurs in a carbonatite (HOM).

At the type locality, Kuttakuzhi, Thiruvananthapuram, Thiruvananthapuram District, Kerala, India, cheralite occurs as green masses up to two inches across in a kaolinised zoned granite pegmatite, associated with schorl, chrysoberyl, zircon, uraninite, thorite, muscovite, hematite and smoky quartz. It also occurs sparsely in the adjacent wall-rock of kaolinised granite-gneiss (AM 39.403, Mindat, HOM).

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