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Formula: NaLaSr3(PO4)3F
Anhydrous phosphates containing halogen, compounds of strontium and
lanthanum, belovite group,
apatite supergroup
Crystal System: Trigonal
Specific gravity: 4.19 measured, 4.05 calculated
Hardness: 5
Streak: White
Colour: Greenish yellow to bright yellow
Common impurities: Ca,Ba,Pr,Nd,Sm,Gd,Y,Th,Si,P,S
Environments:
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).
Localities
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).
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