| 袁莹,祝新友,李顺庭,程细音.赣南淘锡坑钨矿碱长花岗岩厘定及意义[J].矿产勘查,2014,5(5):767-772 |
| 赣南淘锡坑钨矿碱长花岗岩厘定及意义 |
| Delineation and signification of the alkali feldspar granite in Taoxikeng tungsten deposit, southern Jiangxi |
| 投稿时间：2014-04-10 |
| DOI： |
| 中文关键词: 淘锡坑 九龙脑岩体 碱长花岗岩 钨矿 赣南 |
| 英文关键词: Taoxikeng Jiulongnao granite alkalifeldspar granite tungsten deposit southern Jiangxi |
| 基金项目:全国危机矿山接替资源找矿项目(编号:20089927)资助。 |
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| 中文摘要: |
| 在野外地质观察的基础上,从矿物学角度,通过光学显微镜、电子探针等研究手段,对淘锡坑致矿花岗岩的矿物组合及分类命名进行了讨论。与一直沿用至今的前人观点不同,该研究结果显示,区内隐伏花岗岩中的斜长石类矿物几乎全部为钠长石,且岩性在垂向上无显著变化,岩石属碱长花岗岩类。钨锡矿区岩浆高度分异演化直至出现富钠碱长花岗岩,是成矿的重要前提,致矿花岗岩中斜长石An值可作为成矿属性的判别标志之一。 |
| 英文摘要: |
| On the basis of field investigation, the mineral paragenesis, classification and nomenclature of the Taoxikeng ore-forming feldspar granite are discussed in this paper by means of microscope and electron microprobe. The result reveals that all of the plagioclases in the hidden granites are almost albite mineral and no apparent litholgoical variation on the vertical direction, which suggests that the granite should be named as alkali feldspar granite. This phenomenon may be universal in the south Jiangxi Province and Nanling region. The concentrated differentiation evolution of the magma in the tungsten-tin deposit area and the appearance of the Na-rich alkalifeldspar granite, is an important metallogenic condition.The An value of the paragenesis in ore-forming granites could be used as an indicator of evaluating granites whether or not containing tungsten and tin mineralization. |
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