| 艾金彪,张庆松,郭耀文,王能,吕杜,王礼兵,杨光树.云南万龙山锡锌多金属矿床主要金属矿物特征及成因意义[J].地质找矿论丛,2018,33(4):554-563 |
| 云南万龙山锡锌多金属矿床主要金属矿物特征及成因意义 |
| Characteristics of the main minerals in Wanlongshan Sn-Zn Polymetallic Deposit and the genetic significance |
| 投稿时间：2018-08-23 |
| DOI：10.6053/j.issn.1001-1412.2018.04.008 |
| 中文关键词: 万龙山锡锌多金属矿床 都龙矿田 锡石 闪锌矿 黄铜矿 矿床成因 滇东南 |
| 英文关键词:Wnalongshan Sn-Zn polymetallic deposit Dulong Sn ore field cassiterite sphalerite chalcopyrite the southeast Yunnan province |
| 基金项目:四川省冶金地质勘查局重点科研项目（编号：[2016]196）和商业地勘项目联合资助。 |
|
| 摘要点击次数: 1033 |
| 全文下载次数: 971 |
| 中文摘要: |
| 万龙山锡锌多金属矿是著名的都龙锡矿田中的一个矿床，对万龙山矿区主要金属矿物锡石、闪锌矿和黄铜矿进行的矿物组分、矿物特征和电子探针结果的研究发现，锡石颜色较深是由于矿物含有较多的Fe所致，并与锡石的结晶温度呈正相关性，早阶段温度较高时结晶的锡石颜色较深，锥面发育，多呈粒状和短柱状，而较晚阶段结晶时温度有所降低，Fe离子进入晶格的机会下降，锡石颜色较浅，晶形的柱面发育，出现长柱状或针状晶形。闪锌矿具有较高的Fe含量，主要为铁闪锌矿；闪锌矿的Zn与Fe呈负相关性，表明二者在不同温度条件下具有线性替代关系；闪锌矿中富Fe、In，贫Cd、Ga，w（Zn）/w（Cd）值多为300~500，显示出中-高温成矿的特点；闪锌矿具有极高的w（In）/w（Ga）值且均大于1（平均114.71），显然与岩浆作用有关。黄铜矿中S、Fe、Cu含量稳定，并且不含Ni、Se、Cd，显示中-高温岩浆热液的特点；在闪锌矿中呈固溶体出溶物的黄铜矿和交代闪锌矿的黄铜矿共存，说明黄铜矿的形成经过了不同的温度变化。万龙山锡锌多金属矿与岩浆活动的中-高温流体有关，矿床为与燕山晚期岩浆作用有关的矽卡岩-热液型锌锡多金属矿床。 |
| 英文摘要: |
| Wnalongshan Sn-Zn polymetallic deposit is one of the well known deposits in Dulong tin ore field. Characteristics of the main metal minerals of cassiterite, sphalerite and chalcopyrite and their chemical and electronic probe analysis show that dark color of the cassiterite was resulted from its higher Fe content and the color is positively correlated to temperature. The earlier cassiterite crystallized at high temperature is in darker color with cone plane developed and occurring as grainy and short axial mineral, the later at lower temperature in lighter color with less Fe ions into the lattice and columnar plane developed occurring as long columar and acicular mineral. The sphalerite is mainly Fe-sphalerite and characterized by higher Fe content. Zn and Fe in the sphalerite is negatively correlated indicating that the two elements are linearly substituted at different temperature. The sphalerite is rich in Fe, In and poor in Cd, Ga and Zn/Cd is ranged 300~500 that is characteristic of medium-high temperature and very high In/Ga ratio, averagely lager than 1, i.e. 114.71 that is clearly characteristic of magmatism. The chalcopyrite is stable in S, Fe, and Cu content and depleted in Ni、Se、Cd that is characteristic of magma-related medium-high temperature. Co-existence of chalcopyrite occurring as solid solution in sphalerite and chalcopyrite that replaces sphalerite suggests that temperature variation occurred during formation of the pyrite.Wanlongshan Sn-Zn deposit is related to magmatic medium-high temperature fluid and it is a Late Yanshanian magmatism-related skarn hydrothermal Sn-Zn deposit. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
