Chemical and textural features of tourmaline from the spodumene-subtype Koktokay No. 3 pegmatite, Altai, northwestern China: A record of magmatic to hydrothermal evolution
文献类型：期刊论文
| 作者 | Zhang, Ai Cheng1,2; Wang, Ru Cheng2; Jiang, Shao Yong2; Hu, Huan2; Zhang, Hui3 |
| 刊名 | CANADIAN MINERALOGIST
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 46页码:41-58 |
| 关键词 | tourmaline magmatic to hydrothermal evolution spodumene subtype granitic pegmatite Koktokay No. 3 Altai China |
| ISSN号 | 0008-4476 |
| 英文摘要 | The Koktokay No. 3 pegmatite, Altai, northwestern China, is a spodumene-subtype granitic pegmatite. In this study, we report textural and chemical features of tourmaline from the altered country-rock, the contact zone, and the pegmatite. The tourmaline ill the altered country-rock, Ca- and Fe-rich dravite, shows an obvious chemical heterogeneity within individual grains. Tourmaline in the contact zone consists of two generations: zoned Ca- and Fe-rich dravite and in interstitial foitite-schorl solid solution. Tourmaline from the altered country-rock and the contact zone reflects interaction between the country rock (metagabbro) and the pegmatite-forming melt or fluids derived from it. The chemical variation of these tourmalines depends on various contributions of components from the country rock and the pegmatite. The tourmaline in the outer zones (zones I to IV) of the pegmatite is elbaite-schorl solid solution with all intermediate composition between the end members; it is generally homogeneous within individual grains. In the inner zones (zones V, VI, and VIII), the tourmaline is dominantly elbaite with rare rossmanite in zone V. Elbaite is either abruptly zoned within individual grains, or has a replacement texture. Chemically, elbaite in the inner zones has a higher proportion of X-site vacancy than elbaite-schorl in the outer zones. Chemical trends of tourmaline compositions in the spodumene-subtype Koktokay No. 3 pegmatite are generally similar to those in other pegmatite subtypes (lepidolite, petalite, and elbaite subtype). Systematic variations in the internal textures of tourmaline from the outer zones to the inner zones suggest that exsolution of fluids occurred between zone IV and zone V. The outer zones crystallized from a volatile-unsaturated pegmatite-forming magma, whereas the inner zones crystallized from a hydrothermal system. This evolution process is consistent with the London model of internal evolution of granitic pegmatites. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Mineralogy |
| 类目[WOS] | Mineralogy |
| 研究领域[WOS] | Mineralogy |
| 关键词[WOS] | GRANITIC PEGMATITES ; TANCO PEGMATITE ; MACUSANI GLASS ; CRUZEIRO MINE ; BERNIC LAKE ; 200 MPA ; ELBAITE ; SYSTEM ; CRYSTALLIZATION ; CHEMISTRY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000255017100003 |
| 公开日期 | 2011-12-30 |
| 源URL | [http://159.226.72.40/handle/332002/1967]  |
| 专题 | 紫金山天文台_天体化学和行星科学实验室 |
| 作者单位 | 1.Chinese Acad Sci, Purple Mountain Observatory, Lab Astrochem & Planetary Sci, Nanjing 210008, Peoples R China 2.Nanjing Univ, Dept Earth Sci, Nanjing 210093, Peoples R China 3.Chinese Acad Sci, Inst Geochem, Guiyang 550002, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Ai Cheng,Wang, Ru Cheng,Jiang, Shao Yong,et al. Chemical and textural features of tourmaline from the spodumene-subtype Koktokay No. 3 pegmatite, Altai, northwestern China: A record of magmatic to hydrothermal evolution[J]. CANADIAN MINERALOGIST,2008,46:41-58. |
| APA | Zhang, Ai Cheng,Wang, Ru Cheng,Jiang, Shao Yong,Hu, Huan,&Zhang, Hui.(2008).Chemical and textural features of tourmaline from the spodumene-subtype Koktokay No. 3 pegmatite, Altai, northwestern China: A record of magmatic to hydrothermal evolution.CANADIAN MINERALOGIST,46,41-58. |
| MLA | Zhang, Ai Cheng,et al."Chemical and textural features of tourmaline from the spodumene-subtype Koktokay No. 3 pegmatite, Altai, northwestern China: A record of magmatic to hydrothermal evolution".CANADIAN MINERALOGIST 46(2008):41-58. |
入库方式： OAI收割
来源：紫金山天文台
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。