Belovite

phosphate

rare earth

Formulae:
Belovite-(Ce): NaCeSr3(PO4)3F
Belovite-(La): NaLaSr3(PO4)3F
Anhydrous phosphates containing halogen, compounds of strontium and rare earth minerals, apatite supergroup
Specific gravity: 4.19, both
Hardness: 5, both
Streak: White, both
Colour: Belovite-() Honey-yellow, greenish yellow; in transmitted light colourless to slightly yellow Belovite-(La) Greenish yellow to bright yellow
Environments:

Pegmatites

Belovite-(Ce) occurs as a secondary mineral in pegmatites in differentiated alkalic massifs, associated with ussingite, natrolite, chkalovite, epistolite, tugtupite, manganoneptunite, murmanite, gaidonnayite, nordite-(La), lamprophyllite, fluorcaphite, lomonosovite, deloneite-(Ce), sitinakite, aegirine, eudialyte, sodalite, microcline, manganoan pectolite, steenstrupine-(Ce) and nepheline (HOM, Mindat).
Belovite-(La) occurs in natrolite veinlets in pegmatites in a differentiated alkalic massif, asssociated with gaidonnayite, gerasimovskite, lamprophyllite, murmanite, aegirine, pectolite, microcline and natrolite (HOM).

The type locality for belovite-(Ce) is the Malyi Punkaruaiv Mountain, Lovozero Massif, Murmansk Oblast, Russia, where it occurs in an alkalic pegmatite, associated with ussingite, steenstrupine-(Ce), sodalite, nepheline, natrolite, murmanite, microcline, manganoneptunite, manganoan pectolite, eudialyte and aegirine (Mindat).

Belovite-(La) has two co-type localities, Eveslogchorr Mountain and the Kirovskii apatite mine, Kukisvumchorr Mountaint, both in the Khibiny Massif, Murmansk Oblast, Russia. In these localities it occurs in pegmatites in association with natrolite, pectolite, sphalerite, galena, molybdenite, lamprophyllite, gaidonnayite, gerasimovskite and epistolite; it has also been noted to occur in a natrolite vein in associaton with analcime, murmanite and safflorite (AM 82.620-624).

Common impurities: belovite-(Ce): K,Mg,Ca,Ba,Fe,Th,Pr,Nd,Sm,Si,P,S
belovite-(La): Ca,Ba,Pr,Nd,Sm,Gd,Y,Th,Si,P,S

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