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Science 11 July 1969:
Vol. 165. no. 3889, pp. 169 - 171
DOI: 10.1126/science.165.3889.169
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Articles

Phosphide from Metorites: Barringerite, a New Iron-Nickel Mineral

Peter R. Buseck 1

1 Departments of Geology and Chemistry, Arizona State University, Tempe 85281

Schreibersite, (Fe,Ni)3P, and a higher phosphide, barringerite, occur in the Ollague pallasite. The composition of the higher phosphide, determined by electron probe microanalysis, is (Fe0.58Ni0.42Co0.003)1.95P. It is hexagonal, with space group P62m and a = 5.87 ± 0.07 angstroms and c = 3.44 ± 0.04 angstroms. If we assume a primary origin, the new mineral indicates that troilite and schreibersite crystallized at high temperatures. The occurrence of a higher phosphide in a pallasite indicates local nonequilibria within a group of meteorites that are remarkable for their overall degree of equilibrium crystallization.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Icosahedral coordination of phosphorus in the crystal structure of melliniite, a new phosphide mineral from the Northwest Africa 1054 acapulcoite.
G. Pratesi, L. Bindi, and V. Moggi-Cecchi (2006)
American Mineralogist 91, 451-454
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Allabogdanite, (Fe,Ni)2P, a new mineral from the Onello meteorite: The occurrence and crystal structure.
S. N. Britvin, N. S. Rudashevsky, S. V. Krivovichev, P. C. Burns, and Y. S. Polekhovsky (2002)
American Mineralogist 87, 1245-1249
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