Opaque Minerals in Lunar Samples

Details Opaque Minerals in Lunar Samples Opaque Minerals in Lunar Samples

Jan 1970

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1970sci...167..623c&link_type=abstract

Science, Volume 167, Issue 3918, pp. 623-625

Computer Science

1

Scientific paper

Microscope study and electron microprobe analysis of lunar rocks and soil show that ilmenite, troilite, and native iron are accompanied by trace amounts of ulvospinel, titanochromite (new mineral name), an unidentified Ti-Fe oxide, and a complex Zr-Y silicate. The assemblage requires a strongly reducing environment. Textures and modal proportions show that the rocks present are not a differentiation series. The restricted nature of the opaque mineral assemblage suggests a narrow range of composition for the materials from which the parent liquids of the rocks were generated. Textural variety must reflect differences in cooling rates, probably related to depths of formation.

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