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Published July 2010 | Published
Journal Article Open

Discovery of a New Chromium Sulfide Mineral, Cr_5S_6 in Murchison

Abstract

During a nano-mineralogy investigation of the Murchison CM2 meteorite, a new chromium sulfide mineral, Cr_5S_6, was identified as inclusions in two isolated olivine grains. High-resolution SEM, electron-backscatter diffraction (EBSD) and electron microprobe analyses have been used to characterize its composition and structure. The phase is known from laboratory studies of the Cr-S system [1] but has not been previously reported in nature. The new mineral has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (IMA 2010-003).

Additional Information

© 2010 The Meteoritical Society. Article first published online: 15 Jul. 2010.

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