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Metasomatic zoning in sapphirine-bearing granulites from Antarctica

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Created 20/01/2025

Updated 20/01/2025

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Highly magnesian (mg about 98) granulites, containing sapphirine, enstatite, spinel, phlogopite, and cordierite, occur as xenoliths in Precambrian orthopyroxene-bearing granitic rocks at Mawson and Gage Ridge, East Antarctica. At Mawson, a marginal reaction zone is considerably enriched in Fe, K, and volatiles H2O and F, largely at the expense of Mg, with the development of sapphirine + phlogopite-rich assemblages. At gage ridge, marginal gain of Fe and to some extent Ca and Na, and loss of Mg are indicated, but there was no significant gain of K or H2O, possibly because very low P(H2O) did not allow crystallisation of phlogopite. (Auth.)

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Title Metasomatic zoning in sapphirine-bearing granulites from Antarctica
Language eng
Licence notspecified
Landing Page https://devweb.dga.links.com.au/data/dataset/eba31d31-d939-46ca-9eff-22f6aa99cad7
Contact Point
Geoscience Australia
clientservices@ga.gov.au
Reference Period 20/04/2018
Geospatial Coverage {"type": "Polygon", "coordinates": [[[50.0, -69.0], [65.0, -69.0], [65.0, -65.0], [50.0, -65.0], [50.0, -69.0]]]}
Data Portal data.gov.au

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This dataset was originally found on data.gov.au "Metasomatic zoning in sapphirine-bearing granulites from Antarctica". Please visit the source to access the original metadata of the dataset:
https://devweb.dga.links.com.au/data/dataset/metasomatic-zoning-in-sapphirine-bearing-granulites-from-antarctica

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