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Formula: Y(PO4)
Phosphate of yttrium, xenotime
group, forms a series with
xenotime-(Yb) and with
chernovite-(Y),
zircon is an epitaxial mineral (Mindat)
Crystal System: Tetragonal
Specific gravity: 4.4 to 5.1 measured, 4.277 calculated
Hardness: 4 to 5
Streak: Pale brown, yellowish or reddish, white
Colour: Yellowish brown, reddish brown, light red, flesh-red, light green, grey, greyish white, wine-yellow. Colourless
to very light yellowish green, yellow or yellowish brown in transmitted light (Mindat)
Solubility: Very lightly attacked by acids
Environments
Igneous environments
Pegmatites
Metamorphic environments
Localities
At Saint-Pierre-de-Broughton, Quebec, Canada, xenotime-(Y) is an exceedingly rare accessory mineral found in
small cavities in
albite schist hosting
anatase- and brookite- bearing
Alpine fissures. It's
only associate here is chamosite
(R&M 85.6.508-509).
At the type locality, Hidra, Flekkefjord, Agder, Norway, xenotime-(Y) occurs in a
granite
pegmatite
(Mindat).
In the Wassau Complex pegmatites, Marathon county, Wisconsin, USA, xenotime-(Y) has been found in
a greisen assemblage associated with
cassiterite,
ferberite-hübnerite and
topaz
(R&M 88-4.361-362).
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