Partition coefficients for calcic plagioclase: Implications for Archean anorthosites

Phinney, W. C.; Morrison, Donald A.

doi:10.1016/0016-7037(90)90397-4

Cited by 103 publications

(40 citation statements)

References 15 publications

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“…In Fig. 5, the melt composition which may have equilibrated with the cores of these grains was estimated by dividing core REE concentrations by the appropriate plagioclase partition coefficients (Phinney and Morrison, 1990). AS can be seen, the calculated melt REE pattern is flat with 8-10 x C1 abundances, which are similar to the whole rock REE abundances measured in Sioux County and estima.ed for Peramiho.…”

Section: Peramiho Is a Normal Main Group Eucritementioning

confidence: 48%

Ion microprobe study of the Pomozdino and Peramiho eucrites

Hsu

Crozaz²

1997

Meteorit & Planetary Scien

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Abstract-Electron and ion microprobe measurements of major, minor, and trace element concentrations were made in individual grains of pyroxene, plagioclase, and Ca phosphates in Pomozdino and Peramiho, two eucrites previously classified as anomalous. Although Pomozdino pyroxene is highly magnesian, minor and trace element concentrations in both pyroxene and plagioclase of this meteorite are similar to those in other noncumulate eucrites. High incompatible element concentrations (similar to those in Stannern) coupled with mg# typical of cumulate eucrites confirm the anomalous character of this meteorite but do not allow us to distinguish unequivocally between different possible modes of origin. Peramiho has mg# and trace element concentrations similar to main group eucrites, indicating that this meteorite most probably belongs to this group. A previously reported low incompatible element concentration for Peramiho niay be due to a sampling problem.

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Section: Peramiho Is a Normal Main Group Eucritementioning

confidence: 48%

Ion microprobe study of the Pomozdino and Peramiho eucrites

Hsu

Crozaz²

1997

Meteorit & Planetary Scien

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“…The equilibrium partition coefficients for enstatite are deduced from the values given by van Kan Parker et al (2010) assuming that D Eu =D Sr at very low fO 2 . The plagioclase/melt partition coefficients are from Phinney and Morrison (1990) except for Eu, taken from Jones (1995). The oldhamite partition coefficients are from Dickinson and McCoy (1997).…”

mentioning

confidence: 99%

The origin of aubrites: Evidence from lithophile trace element abundances and oxygen isotope compositions

Barrat

Greenwood

Keil

et al. 2016

Geochimica et Cosmochimica Acta

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Please cite this article as: Barrat, J.A., Greenwood, R.C., Keil, K., Rouget, M.L., Boesenberg, J.S., Zanda, B., Franchi, I.A., The origin of aubrites: Evidence from lithophile trace element abundances and oxygen isotope compositions, Geochimica et Cosmochimica Acta (2016), doi: http://dx.doi.org/10. 1016/j.gca.2016.07.025 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Leaching experiments were undertaken to investigate the contribution of sulfides to the whole rock 3

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“…These four grains have higher Na contents and much higher Al/Mg ratios (except for three spots of grain #4) than those reported in the literature (Hutcheon et al, 2009;Srinivasan et al, 2000). These signatures are inconsistent with crystallization from typical ferromagnesian chondrule melts (Phinney and Morrison, 1990;Simon et al, 1994) and suggest that these grains gained Na and lost Mg during post-crystallization metamorphism. Typical plagioclase grains reported by Hutcheon et al (2009) have Al/Mg ratios lower than 100, which is consistent with primary crystallization from a Mg-rich melt.…”

Section: Grain Size Of Plagioclase and Possible Fe-alkali Metasomaticmentioning

confidence: 54%

Ion microprobe Al–Mg dating of single plagioclase grains in an Efremovka chondrule

et al. 2014

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Partition coefficients for calcic plagioclase: Implications for Archean anorthosites

Cited by 103 publications

References 15 publications

Ion microprobe study of the Pomozdino and Peramiho eucrites

Ion microprobe study of the Pomozdino and Peramiho eucrites

The origin of aubrites: Evidence from lithophile trace element abundances and oxygen isotope compositions

Ion microprobe Al–Mg dating of single plagioclase grains in an Efremovka chondrule

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