『Abstract
　Studies of Mesozoic granites associated with rare earth element (REE)-rich weathered crust deposits in southern-most Jiangxi Province indicate that they have high-K to shoshonite compositions and belong to ilmenite-series I-type granites. Of the studied rocks at 59-292 ppm of bulk REE content, the highest are seen in the biotite granites of Dingnan (358, 429 ppm) and mafic biotite granite of the Wuliting Granite (344 ppm) near the Dajishan tungsten mine, both areas where weathered-crust REE deposits occur. REE-bearing accessory minerals in these granites are mainly zircon, apatite and allanite, and REE-fluorocarbonates are common. REE enrichment occurs in the rims of apatite crystals, and in fluorocarbonates that occur along grain boundaries of and cracks in major silicate minerals, and in fluorocarbonates that replaced altered biotite. It is therefore thought that a major part of the REE content of these granites was concentrated during deuteric activity, rather than during magmatic crystallization. The crack-filling REE-fluorocarbonates could subsequently have been easily leached out and deposited in weathered crust developed during a long period of exposure.

Keywords: chemistry;granites; Jurassic; REE; Southern Jiangxi; weathered crust. 』

1. Introduction
2. Granitic rocks of Ganzhou-Dingnan region
3. Major and minor element compositions
4. Rare earth element composition
5. Rare earth element minerals
　5.1. REE minerals of the Dingnan biotite granites
　5.2. REE minerals of the Wuliting mafic granite
　5.3. Chemical compositions
　　5.3.1. Apatite
　　5.3.2. Allunite
　　5.3.3. Titanite
　　5.3.4. Rare earth element fluorocarbonates
6. Discussion on the REE source for weathered crust deposits
7. Conclusions
Acknowledgments
References