Knowledge Management System Of Guangzhou Institute of Geochemistry，CAS
| Crystallization of topaz-muscovite-quartz assemblage in F-rich melt | |
| Xiong XL; Zhao ZH; Zhu JC; Rao B | |
| Source Publication | 5th Biennial Meeting of the Society-for-Geology-Applied-to-Mineral-Deposits / 10th Quadrennial Symposium of the International-Association-on-the-Genesis-of-Ore-Deposits |
| 1999-08-22 | |
| Conference Date | 1999-8-22 |
| Conference Place | LONDON, ENGLAND |
| Indexed By | SCI |
| Language | 英语 |
| Abstract | The crystallization of a topaz-muscovite-quartz assemblages in a melt has been achieved experimentally in the system albite granite-H2O-HF under conditions of 100 MPa and 6 wt.% F. This demonstrates that mineralogies identical to those found in greisens could be formed by direct crystallization from a haplogranitic melt. In order to minimize the possible effects of the aqueous fluid phase, a low fluid/solid ratio of 1:4 was used in our experiments. The quartz, topaz and mica were homogeneously distributed in the F-rich melts (quenched glasses), and the assemblage typical of topaz greisen (quartz + topaz + mica) crystallized from such a melt at T < 600 degrees C. These results demonstrate that quartz-topaz-muscovite assemblages can be formed by the crystallization of F-rich melt at low temperature conditions. |
| Document Type | 会议论文 |
| Identifier | http://ir.gig.ac.cn/handle/344008/9412 |
| Collection | 中科院广州地化所(-2008) |
| Recommended Citation GB/T 7714 | Xiong XL,Zhao ZH,Zhu JC,et al. Crystallization of topaz-muscovite-quartz assemblage in F-rich melt[C],1999. |
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