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 13 Characteristics of Typical Ion-Adsorption Type REE Deposits in Southern China—Cont’d Province or Region Deposits (County/City) Elevation REE Grade Recovery of Ion-Exchangeable REEs Thickness of Weathered Crusts Parent Rocks Accessory Minerals of Parent Rocks References Fujian Province Chengnan (Ninghua County) 330–410 m <500 m 420–1700 ppm (Ave $840 ppm) 41–72% Unknown 0.72–7.45 m (Max 17.3 m) Bt granite Unknown Zhang (1990) and Chen (2013) Hunan Province Guposhan (Jianghua County) 300–700 m Max 1327 ppm Unknown Unknown Bt granite Probably same as Guposhan in Guangxi Luo (2011) and Li and Shen (2013) Yunnan province Long’an (Longchuan County) 1000– 1100 m (?) Max $2900 ppm (Ave $1100 ppm) 30–40% 4–13 m (Ave 6.6 m) Granite Unknown Li and Li (2010) Xiaota (Yong’an City) 510–1700 ppm 8–20 m (Max 30 m) Hlb-bearing Bt granite Apt, Ttn, Aln, Mnz, Xen, and Frg Tong (2013) Aec1⁄4aeschynite, Aln1⁄4allanite, Apt1⁄4apatite, Bt1⁄4biotite, Exn1⁄4euxenite, Fl1⁄4fluorite, Frg1⁄4fergusonite, Gdn1⁄4gadolinite, Grt1⁄4garnet, Hlb1⁄4hornblende, Ilm1⁄4ilmenite, Mag1⁄4magnetite, Mnz1⁄4monazite, Ms1⁄4muscovite, Pcr1⁄4pyrochlore, Py1⁄4pyrite, RFC1⁄4REE fluorocarbonates (bastnäsite, parisit, synchysite, etc.), Rtl1⁄4rutile, Smk1⁄4samarskite, Thr1⁄4thorite, Ttn1⁄4titanite, Tur1⁄4tourmaline, Xen1⁄4xenotime, Zrn1⁄4zircon. Modified from Sanematsu, K., Watanabe, Y., 2016. Characteristics and genesis of ion adsorption-type REE deposits. Rev. Econ. Geol. 18, in press.

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