Relationships between unit-cell parameters and composition for rock-forming minerals on Earth, Mars, and other extraterrestrial bodies
Relationships between unit-cell parameters and composition for rock-forming minerals on Earth, Mars, and other extraterrestrial bodies
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地球、火星和其他地外天体造岩矿物的晶胞参数与成分之间的关系
DOI：
10.2138/am-2018-6123
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发表时间：
2018
影响因子：
3.1
通讯作者：
P. Craig
中科院分区：
文献类型：
--
作者：
S. Morrison;R. Downs;D. Blake;A. Prabhu;A. Eleish;D. Vaniman;D. Ming;E. Rampe;R. Hazen;C. Achilles;A. Treiman;A. Yen;R. Morris;T. Bristow;S. Chipera;P. Sarrazin;K. V. Fendrich;J. Morookian;J. Farmer;D. D. Marais;P. Craig
摘要利用盖尔陨石坑中的Currency探测器上的CheMin X射线衍射仪，对选定的矿物相进行了晶胞参数与化学成分之间的数学关系的研究。本研究提出了算法，用于估计化学成分的相位仅基于X射线衍射数据。矿物系统包括斜长石、碱性长石、Mg-Fe-Ca C2/c单斜辉石、Mg-Fe-Ca P21/c单斜辉石、Mg-Fe-Ca斜方辉石、Mg-Fe橄榄石、磁铁矿和其它选定的尖晶石氧化物以及明矾石-黄钾铁矾。这些方法假设成分的钠钙斜长石，钾钠碱性长石，镁铁钙辉石，镁铁橄榄石，然而，可能会出现一些其他微量元素，并讨论了它们对测量的晶胞参数的影响。这些晶体化学算法可以应用于任何来源的材料，无论该来源是地球，火星，外星人或实验室。
Abstract Mathematical relationships between unit-cell parameters and chemical composition were developed for selected mineral phases observed with the CheMin X-ray diffractometer onboard the Curiosity rover in Gale crater. This study presents algorithms for estimating the chemical composition of phases based solely on X-ray diffraction data. The mineral systems include plagioclase, alkali feldspar, Mg-Fe-Ca C2/c clinopyroxene, Mg-Fe-Ca P21/c clinopyroxene, Mg-Fe-Ca orthopyroxene, Mg-Fe olivine, magnetite, and other selected spinel oxides, and alunite-jarosite. These methods assume compositions of Na-Ca for plagioclase, K-Na for alkali feldspar, Mg-Fe-Ca for pyroxene, and Mg-Fe for olivine; however, some other minor elements may occur and their impact on measured unit-cell parameters is discussed. These crystal-chemical algorithms can be applied to material of any origin, whether that origin is Earth, Mars, an extraterrestrial body, or a laboratory.
影响因子：
56.9
作者：
Blake, D. F.;Morris, R. V.;Sarrazin, P.
通讯作者：
Sarrazin, P.