原文服务方: 地球化学学报(英文)       
摘要:
The Suizhou meteorite is a heavily shocked and melted vein-containing L6 chondrite. It contains a minor amount of diopside with a(Ca0.419Mg0.466Fe0.088)SiO3 composition, and a shock-metamorphosed diopside grain associated with ringwoodite and lingunite was found in a melt vein of this meteorite. Our electron microprobe,transmission electron microscopic and Raman spectroscopic analyses revealed four silicate phases with different compositions and structures inside this shock-metamorphosed diopside grain, termed phase A, B, C and D in this paper. Phase A is identified as orthorhombic(Ca0.663-Mg0.314)SiO3-perovskite which is closely associated with phase B, the vitrified(Mg0.642Ca0.290Fe0.098)SiO3 perovskite. Phase D is assigned to be(Mg0.578Ca0.414)SiO3 majorite which is associated with phase C, the vetrified Carich Mg-perovskite with a(Mg0.853Ca0.167)SiO3 composition. Based on high-pressure and high-temperature experiments, the diopside grain in the melt vein of the Suizhou meteorite would have experienced a P–T regime of 20–24GPa and 1800 – > 2000 °C. Such P–T conditions are high enough for the decomposition of the diopside and the formation of four different silicate phases. The orthorhombic(Ca0.663Mg0.314)SiO3 perovskite found in the Suizhou L6 chondrite might be considered as the third lower-mantle silicate mineral after bridgmanite and davemaoite after the detailed analyses of its crystal structure and physical properties being completed.
推荐文章
下地幔温压条件下碳对(Mg,Fe)SiO3布里奇曼石的影响
布里奇曼石
深部碳
下地幔
氧化还原反应
顽火辉石(Mg0.92,Fe0.08)SiO3的冲击相变和高压状态方程及其地球物理意义
(Mg0.92
Fe0.08)SiO3-钙钛矿
冲击压缩
状态方程
相稳定性
下地幔矿物学组成
下地幔温压下(Mg,Fe)SiO3钙钛矿的相稳定性--对冲击回收样品的微观分析
顽火辉石
冲击回收
XRD和IR微观分析
(Mg,Fe)SiO3 钙钛矿的相稳定性
下地幔
高温高压下(Mg,Fe)SiO3钙钛矿的相稳定性
高温高压
晶格畸变
冲击温度
自旋相变
相变边界
相稳定性
内容分析
关键词云
关键词热度
相关文献总数  
(/次)
(/年)
文献信息
篇名 The breakdown of diopside to (Ca, Mg)SiO3 perovskite–(Mg, Ca, Fe)SiO3 glass–(Mg, Ca)SiO3 glass–(Mg, Ca)SiO3 majorite in a melt vein the Suizhou L6 chondrite
来源期刊 地球化学学报(英文) 学科 地球科学
关键词
年,卷(期) 2025,(2) 所属期刊栏目
研究方向 页码范围 1-12
页数 12页 分类号
字数 语种 中文
DOI
五维指标
传播情况
(/次)
(/年)
引文网络
引文网络
二级参考文献  (0)
共引文献  (0)
参考文献  (0)
节点文献
引证文献  (0)
同被引文献  (0)
二级引证文献  (0)
2025(0)
  • 参考文献(0)
  • 二级参考文献(0)
  • 引证文献(0)
  • 二级引证文献(0)
引文网络交叉学科
相关学者/机构
期刊影响力
地球化学学报(英文)
双月刊
2096-0956
52-1161/P
大16开
贵州省贵阳市观水路46号地球化学研究所
1982-01-03
英文
出版文献量(篇)
0
总下载数(次)
0
总被引数(次)
0
论文1v1指导