Elements M Meteoritic Minerals
SMITHSONIAN CONTRIBUTIONS TO THE EARTH SCIENCES NUMBER 3 Brian Mason Minor and Trace and A. L. Graham pi t Elements m Meteoritic Minerals SMITHSONIAN INSTITUTION PRESS CITY OF WASHINGTON 1970 ABSTRACT Mason, Brian and A. L. Graham. Minor and Trace Elements in Meteoritic Minerals. Smithsonian Contributions to the Earth Sciences, 3:1—17. 1970.—Nickel-iron, troilite, olivine, pyroxenes, plagioclase, chromite, and phosphate minerals (chlor- apatite and/or merrillite) have been separated from a number of meteorites (Modoc, St. Severin, Winona, Haraiya, Marjalahti, Springwater, Johnstown, Mt. Egerton, Soroti) and analyzed for minor and trace elements with the spark-source mass spectrometer. The elements Ni, Go, Ge, As, Ru, Rh, Pd, Sn, Sb, W, Re, Os, Ir, Pt, and Au are concentrated in nickel-iron: Se and Ag in troilite; Th, U, and the lanthanides in the phosphate minerals and in diopside; Eu, Sr, Ba, Rb, and Gs in plagioclase. Molybdenum and tellurium are concentrated in nickel-iron and troilite. The elements Ti, Sc, V, Cu, Zn, Mn, and Ga are distributed over several coexisting minerals. Official publication date is handstamped in a limited number of initial copies and is recorded in the Institution's annual report, Smithsonian Year. UNITED STATES GOVERNMENT PRINTING OFFICE WASHINGTON : 1970 For sale by the Superintendent of Documents, U.S. Government Printing Office Washington, D.C. 20402 - Price 30 cents (paper cover) Brian Mason Minor and Trace and A. L. Graham Elements in Meteoritic Minerals Introduction Vilcsek and Wanke (1965) and Honda and Shima (1967) ; however, study of their results indicates that During the past decade a very large amount of data this selective solution is seldom completely quantitative.
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