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Simple field test for distinguishing minerals by abrasion pH
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This article is published in American Mineralogist.The article was published on 1948-02-01 and is currently open access. It has received 67 citations till now. The article focuses on the topics: Abrasion (geology).read more
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Chemistry and mineralogy of outcrops at Meridiani Planum
Benton C. Clark,Richard V. Morris,Scott M. McLennan,Ralf Gellert,Bradley L. Jolliff,Andrew H. Knoll,Steven W. Squyres,Tim K. Lowenstein,D. W. Ming,Nicholas J. Tosca,Albert S. Yen,Philip R. Christensen,S. P. Gorevan,J. Brückner,Wendy M. Calvin,Gerlind Dreibus,William H. Farrand,G. Klingelhoefer,H. Waenke,Jutta Zipfel,James F. Bell,John P. Grotzinger,Harry Y. McSween,Rudolf Rieder +23 more
TL;DR: In this article, outcrops created by the impact craters Endurance, Fram and Eagle reveal the broad lateral continuity of chemical sediments at the Meridiani Planum exploration site on Mars.
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The electrochemical mechanism of sulfide self-potentials*
TL;DR: In this paper, the authors estimate the available self-potential of sulfide ore bodies in terms of the ohmic potential drop within the country rocks, where the electric current is produced by separate but simultaneous reduction of oxidizing agents near the surface and oxidation of reducing agents at depth.
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Redistribution and fractionation of rare-earth and other elements in a weathering profile
TL;DR: A weathering profile on a uniform Lower Cretaceous volcanogenic sandstone from southern Victoria, Australia is enriched in rare-earth elements (REE), Y and other elements including Ba, Sr and Rb.
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Clay mineralogical and related characteristics of geophagic materials.
TL;DR: It is suggested that total chemical analyses of these materials are of little relevance unless supported by a physiologically based extraction test, this approach being essential in any study seeking to confirm the nutrient supplementation hypothesis.
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Geochemistry of Carbonates on Mars: Implications for Climate History and Nature of Aqueous Environments
Paul B. Niles,David C. Catling,Gilles Berger,Eric Chassefière,Bethany L. Ehlmann,Joseph R. Michalski,Joseph R. Michalski,Richard V. Morris,Steven W. Ruff,Brad Sutter +9 more
TL;DR: Carbonate minerals have now been identified in a wide range of localities on Mars as well as in several martian meteorites as mentioned in this paper, and the presence of carbonates along with evidence for active carbonate precipitation suggests that a global acidic chemistry is unlikely and a more complex relationship between acidity and carbonate formation.