| 摘要: |
| 牦牛坪矿-(Ce)属硅钛铈矿亚族的新成员,发现于四川牦牛坪稀土矿床的碳酸岩、伟晶碳酸岩和碱性岩等矿脉中。与已知的同亚族矿物相比,新矿物要么是chevkinite-(Ce)B位上的Fe3+类似物,要么同时是po lyakovite-(Ce)B位和C位上的Fe3+类似物。牦牛坪矿-(Ce)直接从一类富F、水和REE的岩浆-热液过渡阶段的成矿流体中结晶所成。新矿物得名于产地和稀土元素中Ce居优。牦牛坪矿-(Ce)及其命名,已获国际矿物协会新矿物及矿物命名委员会投票批准。 |
| 关键词: 新矿物种 牦牛坪矿-(Ce) 硅钛铈矿亚族 稀土矿床 四川 |
| DOI： |
| 附件 |
| 投稿时间：2005-03-15 |
| 基金项目:国家自然科学基金项目(40272027) |
|
| Maoniupingite-Ce: a new rare-earth mineral from the Maoniuping rare-earth deposit in Mianning, Sichuan |
| SHEN Gan-fu, YANG Guang-ming, XU Jin-sha |
(1. Chengdu Institute of Geology and Mineral Resources, Chengdu 610082, Sichuan, China;
2. China University of Geosciences, Wuhan 430074, Hubei, China) |
| Abstract: |
| Maoniupingite-Ce approved by IMA CNMMN as a new rare-earth mineral and a new member of the chevkinite subgroup is identified in the veins of carbonatites, pegmatitic carbonatites and alkaline rocks from the Maoniuping rare-earth deposit in Mianning, Sichuan. Compared with the known equivalents, the new mineral is interpreted to be either the Fe3+ analogue of chevkinite-(Ce) at the B site or the Fe3+ analogue of polyakovite-(Ce) at the B and C sites, and directly crystallized from a type of F-, water- and REE-rich mineralizing fluids during the transitional stages of magmatic-hydrothermal processes. |
| Key words: new mineral species maoniupingite-Ce chevkinite subgroup rare earth deposit Sichuan |
