47,310 research outputs found
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Fe-Ni Sulphides within a CM1 clast in Tagish Lake
The composition, abundance and mineral associations of Fe-Ni sulphides within a CM1 clast in Tagish Lake are described, and compared with Fe-Ni sulphides in the carbonate-rich and carbonate-poor lithology of Tagish Lake, as well as Fe-Ni sulphides from CI and CM chondrites
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Fe-Ni Sulphides as Indicators of Alteration in CM Chondrites
This study looks at the sulphide abundance and composition of Fe-Ni sulphide grains in 12 CM chondrites to determine an alteration sequence for these chondrites
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Different degrees of aqueous alteration in sulphides within the CI1 chondrites
Sulphides in four different CI1 chondrites were analysed, to evaluate their composition, texture and morphology. The results reinforce the view that CI1 chondrites could be divided into two subgroups, based on their level of aqueous alteration
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Fe isotopic composition of Martian meteorites
In the present work, we have measured iron isotope compositions of a group of Martian meteorites to establish a baseline Fe-isotope fractionation pattern in the case of high-temperature igneous rocks from Mars
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Fe isotopic composition of Martian meteorites and some terrestrial analogues
We report Fe isotopic composition of seven martian meteorites and other terrestrial materials that may be considered Martian analogues
An ion probe study of the sulphur isotopic composition of Fe-Ni sulphides in CM carbonaceous chondrites
From the Introduction: The CM chondrites have endured variable degrees of aqueous alteration [1] which has changed their original mineralogy. A detailed study of the petrology and mineralogy of the sulphides in a suite of increasingly aqueously altered CMs, combined with sulphur isotope data measured in situ, can provide clues as to whether differences in the CM group are a result of different degrees of aqueous alteration, or whether they are the result of nebular heterogeneity
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A study of the morphology, composition and mineral associations of Fe-Ni sulphides in CM carbonaceous chondrites
A study of the compositional and textural variations between Fe-Ni sulphides in a suite of pristine to extensively aqueously altered CM chondrites, using SEM and EMP techniques
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Petrology and geochemistry of nakhlite MIL 03346: A new Martian meteorite from Antarctica
MIL 03346 is the first nakhlite in the US Antarctic collection. We have performed detailed mineralogical and bulk-geochemical investigations to compare petrogenesis of this Martian meteorite with other nakhlites
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