Results 121 to 130 of about 33,129 (274)
Fine-Scale Variations in Eucritic Pyroxene FeO/MnO: Process vs. Provenance. [PDF]
, 2018 Most asteroidal igneous rocks are eucrite-like basalts and gabbros, composed mostly of ferroan low- and high-Ca pyroxenes and calcic plagioclase, plus smaller amounts of silica (most commonly tridymite), ilmenite, chromite, troilite, Ca-phosphate, metal ...
Barrett, T. J. +5 more
core
Advanced Energy & Sustainability ResearchThe application of hydrogen (H2) and methane (CH4) as gaseous reductants for pure chromite (FeCr2O4) is reviewed in four theoretical approaches. These approaches are evaluated against the conventional process, where the sole reductant is a solid carbon ...
Margaretha Susanna Ernst +1 more
doaj +1 more source
The Distribution of Some Natural Resources Between India and Pakistan [PDF]
, 1952 Thesis (M.A.)--Boston ...
Peters, Catherine E
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NASA Redox Project status summary [PDF]
This report is a summary of the results of the Redox Project effort during Cy 1982. It was presented at the Fifth U.S. Department of Energy Battery and Electrochemical Contractors Conference, Arlington, Va., Dec. 7-9, 1982.
Hagedorn, N. H.
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Antarctic meteorite descriptions 1976-1977-1978-1979 [PDF]
All previously distributed meteorite data sheets, plus a number of new ones for 1979 chondrites are included. A comprehensive sample index listing meteorite name/number, classification, and weathering category is also included.
Bogard, D. D. +5 more
core +1 more source
Podiform Chromitites in the Sorkhband Ultramafic Complex, Southern Iran: Evidence for [PDF]
Journal of Sciences, Islamic Republic of Iran, 2008 The podiform chromitite deposits of the Ordovician Sorkhband ultramafic complex, southwestern Makran, are the largest chromitite deposits in Iran. The Sorkhband ultramafic complex comprises of a northern part of dunite, podiform chromitite, olivine ...
doaj
Solid-State Reduction of Chromite Concentrate - Melting of Prereduced Chromite
, 1995 The solid state reduction of a chromite concentrate from Northern Greece in the temperature range 1100-1470 degrees C has been studied. The degree of reduction of chromite by graphite was found to increase with increasing temperature, time, and carbon addition.
Lekatou, A., Walker, R. D.
openaire +1 more source
Infrared and Raman spectroscopic studies of structural variations in minerals from Apollo 11, 12, 14 and 15 samples, volume 3 [PDF]
Infrared and Raman vibrational spectroscopic data, yielding direct information on molecular structure, were obtained for single grains ( 150 microns) of minerals, basalts, and glasses isolated from Apollo 11, 12, 14, and 15 rock and dust samples, and for
Estep, P. A. +3 more
core +1 more source
Lunar material resources: An overview [PDF]
The analysis of returned lunar samples and a comparison of the physical and chemical processes operating on the Moon and on the Earth provide a basis for predicting both the possible types of material resources (especially minerals and rocks) and the ...
Carter, James L.
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Antarctic meteorite newsletter. Volume 4: Number 1, February 1981: Antarctic meteorite descriptions, 1976, 1977, 1978, 1979 [PDF]
This issue of the Newsletter is essentially a catalog of all antarctic meteorites in the collections of the Johnson Space Center Curation Facility and the Smithsonian except for 288 pebbles now being classed.
Bogard, D. D. +5 more
core +1 more source