美国Spruce Pine与新疆阿尔泰地区高纯石英伟晶岩的对比研究

J4 ›› 2010, Vol. 16 ›› Issue (4): 426-435.

美国Spruce Pine与新疆阿尔泰地区高纯石英伟晶岩的对比研究

张晔，陈培荣

南京大学内生金属矿床成矿机制研究国家重点实验室，地球科学与工程学院，南京 210093

收稿日期:2010-03-25 修回日期:2010-10-08 出版日期:2010-12-20 发布日期:2010-12-20
通讯作者: 陈培荣，教授，博导，主要从事石英材料和铀矿地质学研究；
作者简介:张晔，女，1985生，硕士研究生，主要从事石英材料和花岗岩岩石学研究
基金资助:
江苏省科技成果转化专项资金项目（BA2005038）

Characteristics of Granitic Pegmatite with High-Purity Quartz in Spruce Pine Region, USA and Altay Region of Xinjiang, China

ZHANG Ye ， CHEN Pei-rong

State Key Laboratory for Mineral Deposits Research, School of Earth Sciences and Engineering, Nanjing University, Nanjing 210093, China

Received:2010-03-25 Revised:2010-10-08 Online:2010-12-20 Published:2010-12-20

摘要/Abstract

摘要：

对美国北卡罗来纳州 Spruce Pine 地区白岗岩 / 伟晶岩和新疆阿尔泰白云母花岗岩 / 伟晶岩进行了对比研究。这两个地区的伟晶岩可能是过铝质花岗岩浆通过熔体 - 蒸汽分异作用的产物。美国产高纯石英的伟晶岩发育在片岩、片麻岩的背景之上，主要造岩矿物中富含斜长石，Na 大于 K，大离子亲石元素 Sr 和 Ba 含量高，高场强元素和稀土元素含量低，Eu 正异常，石英中杂质元素含量低。这些特征可作为高纯石英伟晶岩的判别标志。我国阿尔泰地区的伟晶岩脉十分发育，所研究的样品中，有些样品已经具有这些特点，阿尔泰伟晶岩区具有产高纯石英的成矿前景。

关键词: 伟晶岩, 高纯石英, Spruce Pine, 阿尔泰

Abstract:

The alaskites/pegmatites from the Spruce Pine region of USA and the muscovite granites/pegmatites from the Altay region of Xinjiang, China, were comparatively studied. The pegmatites from both regions might be melt-vapor differentiation products of the peraluminous granitic magmas. The pegmatites from the Spruce Pine region with high-purity quartz were developed on the schist or gneiss background, whose major rock-forming minerals are rich in plagioclase, showing high Na/K ratios, high large-ion lithophile elements Sr and Ba contents, low high-field strength and rare earth elements contents, positive Eu anomalies，and low impurity elements contents in quartz. All these characteristics can be used as the discrimination criteria of high-purity quartz pegmatities. The Altay region of Xinjiang is abundant of pegmatites, and some samples studied showed the features which evidenced that the Altay pegmatite region has a perspective to find the gualified pegmatites with high-purity quartz.

Key words: pegmatite, high-purtity quartz, Spruce Pine, Altay

中图分类号:

张晔，陈培荣. 美国Spruce Pine与新疆阿尔泰地区高纯石英伟晶岩的对比研究[J]. J4, 2010, 16(4): 426-435.

ZHANG Ye ， CHEN Pei-rong. Characteristics of Granitic Pegmatite with High-Purity Quartz in Spruce Pine Region, USA and Altay Region of Xinjiang, China[J]. J4, 2010, 16(4): 426-435.

[1]	王吴梦雨，饶灿，董传万，林晓青，覃莉茜，吕青. 浙江临安石室寺NYF型伟晶岩中稀有稀土金属的矿物学行为与成矿过程[J]. 高校地质学报, 2019, 25(6): 914-.
[2]	徐遥辰，卢奂，饶灿. 新疆阿尔泰协库斯特伟晶岩中锂的矿物学行为及其启示[J]. 高校地质学报, 2019, 25(3): 321-.
[3]	饶灿, ，王汝成，胡欢. 福建南平31号花岗伟晶岩脉中绿柱石的电子探针成分与成因[J]. J4, 2009, 15(4): 496-505.
[4]	张爱铖, 王汝成, 胡欢. 新疆阿尔泰可可托海3号伟晶岩脉重钽铁矿研究[J]. J4, 2003, 9(2): 268-272.
[5]	李兆麟，张文兰，李文，翟伟，石贵勇， . 云南哀牢山和新疆可可托海伟晶岩矿物中熔融包裹体电子探针研究 [J]. J4, 2000, 6(4): 509-522.
[6]	朱金初，吴长年，刘昌实，李福春，黄小龙，周东山 . 新疆阿尔泰可可托海3号伟晶岩脉岩浆—热液演化和成因[J]. J4, 2000, 6(1): 40-52.