fergusonite


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Noun1.fergusonite - a dark mineral consisting of oxides of yttrium and erbium and tantalum and other minerals
atomic number 68, Er, erbium - a trivalent metallic element of the rare earth group; occurs with yttrium
atomic number 73, Ta, tantalum - a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
atomic number 39, Y, yttrium - a silvery metallic element that is common in rare-earth minerals; used in magnesium and aluminum alloys
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
References in periodicals archive ?
The results to date have indicated that the light rare earths (LREE) in the Nechalacho deposit are contained in four minerals: allanite, monazite, bastnaesite and synchisite, and the heavy rare earths (HREE) are present in two minerals: fergusonite and zircon, the latter also being host to zirconium (Zr).
Mineralogical work completed by the company indicated that a wide variety of rare-earth element-bearing minerals have been identified, including apatite, iimoriite, kainosite, gadolinite, allanite, bastnaesite, parisite, brannerite, thalenite, xenotime, fergusonite, synchysite (Y), and monazite.
These Prospects exhibit REE mineralization consisting of allanite, zircon and fergusonite, associated with felsic volcanic rocks in a mafic-felsic bi-modal volcanic belt.