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Formula: YVO4
Anhydrous vanadate of yttrium,
xenotime group
Crystal system: Tetragonal
Specific gravity: 4.25 calculated
Hardness: 5
Colour: Pale tan, yellow, canary-yellow, yellow-brown
Environments
Pegmatites
Hydrothermal environments
Localities
At the type locality, the Evans-Lou Mine, Lake Saint-Pierre, Saint-Pierre-de-Wakefield, Val-des-Monts,
Les Collines-de-l'Outaouais RCM, Outaouais, Québec, Canada, wakefieldite-(Y) occurs in a zoned
granite pegmatite in
the quartz core, giant perthite -
quartz zone, and on the mine dump. It is considered a
secondary mineral, possibly derived by leaching of
hellandite, and precipitated from warm alkaline solutions.
Wakefieldite-(Y) is also found in solid solution in thorogummite at
this locality
(AM 56.395-410).
Associated minerals include hellandite,
quartz, kainosite-(Y) and
montmorillonite
(HOM).
Wakefieldite-(Y) from the Evans-Lou Mine -
Image
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