• 责任者：Yang Yan (School of Earth and Space Science ; University of Science and Technology of China ; Hefei 230026 ; China) ; Xia Qunke
• 刊名：Acta Petrologica et Mineralogica
• 出版年：2007
• 卷期：26(4)
• 关键词：辉石族 ; pyroxene group
• 页码：p.335-339
• 图表：8 illus., 20 refs.
• 分类号：1001
• issnNo：ISSN1000-6524
• isbnNo：CN11-1966/P

The behavior of structural OH in clinopyroxene (Cpx) and orthopyroxene (Opx) during successive heating, cooling and stepped heating was investigated by in-situ Micro-FTIR measurements under temperatures ranging from 25℃ to 500℃ at 100℃ increments. The results suggest that both Cpx and Opx exhibit a decrease in OH stretching vibration frequency with increasing temperature, and the variation is reversible. The shift in absorption band frequency is controlled by thermal expansively of the OH site or lattice interstice.