扫描电镜能谱与冷冻传输装置联用测试矿物中流体包裹体固液相成分的方法研究

杨德平; 舒磊; 熊玉新; 王旭; 刘鹏瑞; 刘智

doi:10.15898/j.cnki.11-2131/td.2015.05.009

扫描电镜能谱与冷冻传输装置联用测试矿物中流体包裹体固液相成分的方法研究

1.
山东省地质科学研究院, 山东省金属矿产成矿地质过程与综合利用重点实验室, 国土资源部金矿成矿过程与资源利用重点实验室, 山东济南 250013

2.
联合利华公司开发部, 上海 200131

3.
美国Gatan公司北京办事处, 北京 100020

基金项目: 国土资源部金矿成矿地质过程与资源利用重点实验室开放课题(2013011)

详细信息

中图分类号: P571;P575.2

收稿日期: 2015-04-29

修回日期: 2015-07-18

录用日期: 2015-09-05

刊出日期: 2015-05-25

Determination of Solid-Liquid Phase Composition of Fluid Inclusions in Minerals by SEM-EDS Coupled with Cryotransfer

1.
Shandong Institute of Geological Sciences, Key Laboratory of Metallogenic Geological Process and Resources Utilization in Shandong Province, Key Laboratory of Gold Mineralization Processes and Resource Utilization, Ministry of Land and Resources, Jinan 250013, China

2.
Development Department of Unilever Company, Shanghai 200131, China

3.
Beijing Office, Gatan Inc., Beijing 100020, China

Received Date: 29 April 2015

Revised Date: 18 July 2015

Accepted Date: 05 September 2015

Publish Date: 25 May 2015

摘要

摘要:
研究流体包裹体中子矿物种类、化学成分及分布特征, 对于确定热液成分和成矿物理化学条件、流体的演化规律和成矿机制等有非常重要的意义。但目前常用的各种测试研究方法存在测试目的物寻找困难、不透明子矿物难鉴定等局限性。本文采用冷冻传输装置首先将流体包裹体冷冻固定并打开, 然后用扫描电镜、能谱仪测试矿物中流体包裹体中的子矿物和液相成分, 该方法可解决扫描电镜下流体包裹体研究目标物不易寻找, 打开流体包裹体后子矿物易散失和碎屑易混入的问题, 可有效测试小颗粒(1~2 μm)、不透明子矿物及不透明矿物中的流体包裹体固液相成分。用该方法实测山东邹平王家庄铜矿流体包裹体液相中Na⁺、K⁺、Cl^-组分的质量分数分别为5.85%、3.60%、16.18%, 计算的盐度为35.35%, 并确定了其中不透明矿物子矿物为黄铜矿, 证明了黄铜矿是从高盐度热液中晶出的结论。本方法为矿物中流体包裹体研究提供了一种新的测试手段。
- 流体包裹体 /
- 固液相成分 /
- 冷冻传输装置 /
- 扫描电镜 /
- 能谱仪
Abstract:
Daughter mineral species, chemical compositions and distribution of daughter minerals in fluid inclusions can provide important constraints on the composition of hydrothermal fluids, physicochemical conditions of mineralization, the regularity of fluid evolution and ore-forming mechanisms. The traditional methods however, have many limitations such as finding target minerals and identifying opaque minerals. Described in this paper, fluid inclusions in minerals are frozen and then opened by Frozen Transmission Equipment (Cryotransfer). The compositions of daughter minerals and liquid phases are determined by Scanning Electron Microscope (SEM) and Energy Disperse Spectroscope. This method solved the difficulty in finding target minerals by SEM. Daughter minerals cannot be lost after opening liquid inclusions, and cannot be mixed with debris. This method can effectively determine the compositions of small-sized (1-2 μm) opaque daughter minerals and the solid-liquid phases of fluid inclusions in opaque minerals. Mass fractions of Na⁺, K⁺, Cl^- in liquid inclusions of Wangjiazhuang copper deposit in Zouping of Shandong province are 5.85%, 3.60% and 16.18%, respectively, and the calculated salinity is 35.35%. The opaque daughter minerals are identified to be chalcopyrite, which proves that chalcopyrite has crystallized from hydrothermal fluids with high salinity. This study provides a new determination method for fluid inclusion, and has great significance in analyzing the compositions of solid and liquid phases in fluid inclusions.
- fluid inclusions /
- solid and liquid phase composition /
- Frozen Transmission Device (Cryotransfer) /
- Scanning Electron Microscope /
- Energy Disperse Spectroscope

HTML全文

图 1 冷冻传输设备

Figure 1.

下载: 全尺寸图片幻灯片

图 2 邹平王家庄铜矿石英中含子晶的流体包裹体显微照相及扫描电镜中冷冻后的流体包裹体二次电子像、子矿物及冷冻液相的能谱图

Figure 2.

下载: 全尺寸图片幻灯片

表 1 冷冻后流体包裹体能谱定量分析结果

Table 1. Quantitative analysis results of energy Spectrum

测点编号	各成分含量(%)
测点编号	O	Na	Si	S	Cl	Fe	Cu	Pt	K	总和
1	14.7	1.61	9.72	14.32	4.31	16.95	12.79	25.6	-	100
2	41.67	5.85	17.19	-	16.18	-	-	15.5	3.60	100
注：测试单位为联合利华公司开发部扫描电镜室；Pt为镀膜成分。

下载: 导出CSV

参考文献(19)

[1]
[2]	http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200403010.htm
[3]	http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB201105015.htm
[4]	http://www.cnki.com.cn/Article/CJFDTOTAL-DZKQ8S1.021.htm
[5]	doi: 10.2113/gsecongeo.105.2.351
[6]
[7]	doi: 10.1016/0009-2541(90)90063-D
[8]	doi: 10.2138/am-2000-11-1216
[9]	doi: 10.1016/j.gexplo.2005.11.068
[10]	http://www.cnki.com.cn/Article/CJFDTOTAL-DXJZ200006008.htm
[11]	http://www.cnki.com.cn/Article/CJFDTOTAL-GWYD200704014.htm
[12]	http://www.cnki.com.cn/Article/CJFDTOTAL-YKCS200101010.htm
[13]	http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200505010.htm
[14]	http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200602003.htm
[15]	http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200004038.htm
[16]	http://www.cnki.com.cn/Article/CJFDTOTAL-YSXB200604026.htm
[17]	doi: 10.3969/j.issn.1671-2552.2013.10.014
[18]	http://www.cnki.com.cn/Article/CJFDTOTAL-KCDZ200506001.htm
[19]	http://www.cnki.com.cn/Article/CJFDTOTAL-DZLP200004007.htm

施引文献

资源附件(0)

访问统计

图(2)

表(1)

计量

文章访问数: 4318
PDF下载数: 613
施引文献: 0

扫描电镜能谱与冷冻传输装置联用测试矿物中流体包裹体固液相成分的方法研究

1. 山东省地质科学研究院, 山东省金属矿产成矿地质过程与综合利用重点实验室, 国土资源部金矿成矿过程与资源利用重点实验室, 山东 济南 250013 2. 联合利华公司开发部, 上海 200131 3. 美国Gatan公司北京办事处, 北京 100020

Determination of Solid-Liquid Phase Composition of Fluid Inclusions in Minerals by SEM-EDS Coupled with Cryotransfer

计量

出版历程

目录

1.
山东省地质科学研究院, 山东省金属矿产成矿地质过程与综合利用重点实验室, 国土资源部金矿成矿过程与资源利用重点实验室, 山东济南 250013

2.
联合利华公司开发部, 上海 200131

3.
美国Gatan公司北京办事处, 北京 100020