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A Zudong muscovite granite (Longnan deposits) B Zudong biotite granite (Longnan deposits) C Guangxi biotite granite (Longnan deposits) D Zhaibeiding muscovite-biotite granite (Zhaibeiding deposits) E 1000 100 10 1 1000 100 10 1 La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu La Ce Pr Nd REE Mineralogy and Resources Chapter 279 215 Parent granite (drill core) 0.7–19 m deep (Ion-exchangeable REY = 48–86%) 0–0.7 m deep (Ion-exchangeable REY = 17–22%) Parent granite (drill core) 0–0.75 m deep (Ion-exchangeable REY < 52%) 3 – 13 m deep (Ion-exchangeable REY = 21 – 26%) 0–0.8 m deep (Ion-exchangeable REY < 52%) 4–20 m deep (Ion-exchangeable REY = 21–26%) 0.8–3.2 m deep Parent granite Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 10,00 Dingnan biotite granite (Dingnan deposits) La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu F Heling biotite granite porphyry (Heling deposits) 0 1.5 m deep Parent granite 1.5–11.5 m deep Parent granite 0.25–2 m deep (Ion-exchangeable REY = 42–64 %) Parent granite La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu La Ce Pr Nd Sm Eu Gd Tb Dy Ho Er Tm Yb Lu FIG. 41 Chondrite-normalized REE pattern of ion-adsorption ores developed on (A) the Zudong muscovite granite, (B) Zudong biotite granite, (C) Guangxi biotite granite in the Longnan deposits (Wu et al., 1990), on (D) muscovite–biotite granite in the Zhaibeiding deposits (Ma et al., 1991; Wu et al., 1993b), on (E) biotite granite in the Dingnan deposits (Ishihara et al., 2008; Murakami and Ishihara, 2008; Sanematsu et al., 2013), and (F) biotite granite porphyry in the Heling deposits (Bao and Zhao, 2008) in Jiangxi Province, southern China. Chondrite values are from Sun, S.S., McDonough, W.F., 1989. Chemical and isotopic systematics of oceanic basalts: implications for mantle composition and processes. In Saunders, A.D., Norry, M.J. (Eds.), Magmatism in the Ocean Basins. Geological Society Special Publication, no. 42, pp. 313–345. (Chappell, 1999) and in Southwest Japan (Ishihara and Murakami, 2006). The occurrences of hydrothermal minerals are suggested by elevated Y/Ho ratios of whole-rock compositions (Sanematsu and Watanabe, 2016), because frac- tionation of Y/Ho is controlled by fluids generated from differentiated igneous rocks (Bau, 1996; Bau and Dulski, 1995). For example, the HREE-rich Sample/Chondrite Sample/ChondritePDF Image | HANDBOOK ON THE PHYSICS AND CHEMISTRY OF RARE EARTHS
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