Brown agregate of tabular fergusonite-beta-(Y) crystals associated with orange zircon, black ferriallanite-(Ce) and quartz into apoeudialyte pseudomorphose. FOV 10x8 mm. Note special nontetragonal and nonbipyramidal morphology of xls and theyr "dry" lustre so characteristic for nonmetamict niobates. X-ray identification of not heated specimen. Composition of the mineral is - (Y.79HREE.25Ca.02)1.06(Nb.87Ta.06Fe"'.05Ti.02)1.00O4.02. REE spectrum have Dy maximum. Pavel M. Kartashov analysis, collection and photo.
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