Abstract

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 (Fe0.58Ni 0.42Co0.003)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.

Original languageEnglish (US)
Pages (from-to)169-171
Number of pages3
JournalScience
Volume165
Issue number3889
StatePublished - 1969

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troilite
new mineral
electron probe analysis
meteorite
nickel
crystallization
iron
mineral

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Phosphide from metorites : Barringerite, a new iron-nickel mineral. / Buseck, P R.

In: Science, Vol. 165, No. 3889, 1969, p. 169-171.

Research output: Contribution to journalArticle

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abstract = "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 (Fe0.58Ni 0.42Co0.003)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.",
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AU - Buseck, P R

PY - 1969

Y1 - 1969

N2 - 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 (Fe0.58Ni 0.42Co0.003)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.

AB - 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 (Fe0.58Ni 0.42Co0.003)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.

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