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Formula: Nd(CO3)F
Anhydrous carbonates containing halogen, bastnäsite group,
neodymium-bearing mineral
Crystal System: Hexagonal
Specific gravity: 5.23 calculated
Hardness: 4 to 4½
Streak: White
Colour: Pale purplish pink to colourless
Weakly RADIOACTIVE
Environments:
Bastnäsite-(Nd) occurs in the outer rim zone in crystals of bastnäsite-(Ce), found in cavities in
yttrium-bearing fluorite in
quartz-microcline-niobium–yttrium–fluorine
pegmatite in
granitic
gneiss, and in granite
pegmatites. Associated minerals include
bastnäsite-(Ce),
stetindite-(Ce),
atelisite-(Y),
calcioancylite-(Nd),
kozoite-(Nd) and
vyuntspakhkite-(Y)
(HOM).
Localities
The type locality is the Stetind pegmatite,
Narvik, Nordland, Norway.
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