yttrium phosphate

mineral

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In xenotime
yttrium phosphate (YPO₄), though large proportions of erbium commonly replace yttrium), that occurs as brown, glassy crystals, crystal aggregates, or rosettes in igneous rocks and associated pegmatites, in quartzose and micaceous gneiss, and commonly in detrital material. Occurrences include Norway, Sweden, Madagascar, Brazil, and North…
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