Oscillatory zoned fayalitic olivine from the Lewis Cliff 90500 CM2 meteorite

Xin Hua; Jia Li; P R Buseck

doi:10.1016/S0016-7037(02)01374-1

Oscillatory zoned fayalitic olivine from the Lewis Cliff 90500 CM2 meteorite

Xin Hua, Jia Li, P R Buseck

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Abstract

A grain of fayalitic olivine with oscillatory Fe-rich and Fe-poor zoning occurs in the Antarctic Lewis Cliff 90500 CM meteorite, suggesting reaction via diffusion. This grain is continuously enclosed by a fine-grained rim ranging from 20 to 100 μm in thickness. Phyllosilicates and other hydrous phases occur at three broken edges of the grain as well as within its surrounding rim, suggesting in situ alteration via aqueous processes. This olivine grain plus its rim provides evidence for both anhydrous reaction that predated the accretion of the meteorite parent body and hydrous alteration that presumably occurred on the parent body.

Original language	English (US)
Pages (from-to)	2201-2211
Number of pages	11
Journal	Geochimica et Cosmochimica Acta
Volume	67
Issue number	12
DOIs	https://doi.org/10.1016/S0016-7037(02)01374-1
State	Published - Jun 15 2003

ASJC Scopus subject areas

Geochemistry and Petrology

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10.1016/S0016-7037(02)01374-1

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@article{4ac276c12022420898c9a5456d89aeb5,

title = "Oscillatory zoned fayalitic olivine from the Lewis Cliff 90500 CM2 meteorite",

abstract = "A grain of fayalitic olivine with oscillatory Fe-rich and Fe-poor zoning occurs in the Antarctic Lewis Cliff 90500 CM meteorite, suggesting reaction via diffusion. This grain is continuously enclosed by a fine-grained rim ranging from 20 to 100 μm in thickness. Phyllosilicates and other hydrous phases occur at three broken edges of the grain as well as within its surrounding rim, suggesting in situ alteration via aqueous processes. This olivine grain plus its rim provides evidence for both anhydrous reaction that predated the accretion of the meteorite parent body and hydrous alteration that presumably occurred on the parent body.",

author = "Xin Hua and Jia Li and Buseck, {P R}",

note = "Funding Information: The LEW90500 samples were provided by the NASA Meteorite Working Group. We are grateful to I. Dodony, D. Janney, D. Lauretta, and T. Zega for discussions. The manuscript was improved by constructive and thorough reviews of A. El Goresy, M. K. Weisberg, M. E. Zolensky, and the extensive comments and editorial review of C. K{\"o}berl. We thank J. Clark for assistance with electron microprobe analyses and B. Roberts, J. Wheatley, and K. Weiss with TEM analyses. This work was supported by NASA grants NAG5-4308 and -9352. ",

year = "2003",

month = jun,

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doi = "10.1016/S0016-7037(02)01374-1",

language = "English (US)",

volume = "67",

pages = "2201--2211",

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TY - JOUR

T1 - Oscillatory zoned fayalitic olivine from the Lewis Cliff 90500 CM2 meteorite

AU - Hua, Xin

AU - Li, Jia

AU - Buseck, P R

N1 - Funding Information: The LEW90500 samples were provided by the NASA Meteorite Working Group. We are grateful to I. Dodony, D. Janney, D. Lauretta, and T. Zega for discussions. The manuscript was improved by constructive and thorough reviews of A. El Goresy, M. K. Weisberg, M. E. Zolensky, and the extensive comments and editorial review of C. Köberl. We thank J. Clark for assistance with electron microprobe analyses and B. Roberts, J. Wheatley, and K. Weiss with TEM analyses. This work was supported by NASA grants NAG5-4308 and -9352.

PY - 2003/6/15

Y1 - 2003/6/15

N2 - A grain of fayalitic olivine with oscillatory Fe-rich and Fe-poor zoning occurs in the Antarctic Lewis Cliff 90500 CM meteorite, suggesting reaction via diffusion. This grain is continuously enclosed by a fine-grained rim ranging from 20 to 100 μm in thickness. Phyllosilicates and other hydrous phases occur at three broken edges of the grain as well as within its surrounding rim, suggesting in situ alteration via aqueous processes. This olivine grain plus its rim provides evidence for both anhydrous reaction that predated the accretion of the meteorite parent body and hydrous alteration that presumably occurred on the parent body.

AB - A grain of fayalitic olivine with oscillatory Fe-rich and Fe-poor zoning occurs in the Antarctic Lewis Cliff 90500 CM meteorite, suggesting reaction via diffusion. This grain is continuously enclosed by a fine-grained rim ranging from 20 to 100 μm in thickness. Phyllosilicates and other hydrous phases occur at three broken edges of the grain as well as within its surrounding rim, suggesting in situ alteration via aqueous processes. This olivine grain plus its rim provides evidence for both anhydrous reaction that predated the accretion of the meteorite parent body and hydrous alteration that presumably occurred on the parent body.

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DO - 10.1016/S0016-7037(02)01374-1

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VL - 67

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EP - 2211

JO - Geochmica et Cosmochimica Acta

JF - Geochmica et Cosmochimica Acta

SN - 0016-7037

IS - 12

ER -

Oscillatory zoned fayalitic olivine from the Lewis Cliff 90500 CM2 meteorite

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