The high-pressure elastic properties of celestine and the high-pressure behavior of barite-type sulphates

被引：0

作者：

Kuang, Yunqian ^{[1
,2
]}

Xu, Jingui ^{[1
,2
]}

Zhao, Dongyu ^{[3
]}

Fan, Dawei ^{[1
]}

Li, Xiaodong ^{[4
]}

Zhou, Wenge ^{[1
]}

Xie, Hongsen ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Geochem, Key Lab High Temp & High Pressure Study Earths In, Guiyang 550081, Guizhou, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Daqing Oilfield Co Ltd, Oil Prod Plant, Daqing 163113, Peoples R China

[4] Chinese Acad Sci, Inst High Energy Phys, Beijing Synchrotron Radiat Facil, Beijing 100049, Peoples R China

来源：

HIGH TEMPERATURES-HIGH PRESSURES | 2017年 / 46卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Celestine; High-pressure; X-ray diffraction; Diamond anvil cell; Equation of state; POWDER DIFFRACTION; CRYSTAL-STRUCTURE; TIN SULFATE; X-RAY; BASO4; CASO4; SRSO4; ANGLESITE; EQUATIONS; STATE;

D O I：

暂无

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The structural stability and elastic properties of celestine have been investigated at room temperature and pressure up to 15GPa, by using in situ angle-dispersive X-ray diffraction and a diamond anvil cell. No phase change is observed within the range of pressure in this study. Analysis of room temperature P-V data to a third-order Birch-Murnaghan (BM) Eos yields: the zero-pressure volume V-0 = 306.0(6) angstrom(3), isothermal bulk modulus K-0 = 62(5) GPa and its pressure derivative K'(0) = 11(1). If K'(0) is fixed at 4, then the isothermal bulk modulus is K-0 = 98(2) GPa. In addition, the axial compressiblity moduli of the three unit cell axes of celestine are obtained as K-a0 = 102(2) GPa, K-b0 = 92(2) GPa and K-c0 = 98(2) GPa, indicating the anisotropy of axial compressibility, with the a axis the most incompressible and the b axis the most compressible. Furthermore, the elastic properties of barite-type sulfates are discussed by combining the results in this study with previous studies on barite-group minerals.

引用

页码：481 / 495

页数：15

共 36 条

[1] Equations of state [J].