HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS

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HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS ( handbook-onphysics-and-chemistry-rare-earths )

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TABLE 6 Rare Earth Elements, Thorium, and Uranium Content of Representative REE-Bearing Minerals Representative Name Chemical Formula REE2O3 (wt.%) HREE2O3 ratio (%) ThO2 UO2 (wt.%) (wt.%) Deposits and Prospects References Silicate Allanite–REE- rich epidote (LREE,Ca)2Al2Fe2+Si3O12(OH) 3–51 1–35 Bdl.-3.6 Bdl. Hoidas Lake, Canada (GWM), Benjamin River, Canada (GWM) Hoshino et al. (2006, 2007), Halpin (2010), and Roskill Information Services Ltd (2015) Britholite-(Ce) (Ca,LREE)5(SiO4,PO4)3(OH,F) 27–62 0–10 Bdl.-21 Bdl.-3.5 Kipawa, Canada (Matamec) Anthony et al. (1995), Della-Ventura et al. (1999), Petrella et al. (2014), and Roskill Information Services Ltd (2015) Cerite Steenstrupine (LREE,Ca)9(Mg,Fe) (SiO4)6(SiO3OH)(OH)3 61–66 29–35 0 0–6 Bdl. Bdl. 0.4–5.1 Bdl.-0.3 – Anthony et al. (1995) and Fo€rster (2000) Britholite-(Y) (Ca,HREE)5(SiO4, PO4)3(OH,F) 44–61 55–90 Bdl.-1.6 Bdl.-0.7 Kipawa, Canada (Matamec) Anthony et al. (1995), Pekov et al. (2011), and Roskill Information Services Ltd (2015) Na14LREE6Mn2Fe2(Zr,Th) (Si6O18)2(PO4)73H2O Kvanefjeld, Greenland (GME) Khomyakov and Sørensen (2001) and Roskill Information Services Ltd (2015)

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