| Reference Type | Journal (article/letter/editorial) |
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| Title | The uranium content of garnet lherzolite xenoliths from kimberlites |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Carswell, D. A. | Author |
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| Rice, C. M. | Author |
| Year | 1980 (June) | Volume | 43 |
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| Issue | 330 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_43/43-330-689.pdf+ |
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| DOI | doi:10.1180/minmag.1980.043.330.01Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 3123 | Long-form Identifier | mindat:1:5:3123:7 |
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| GUID | 0 |
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| Full Reference | Carswell, D. A., Rice, C. M. (1980) The uranium content of garnet lherzolite xenoliths from kimberlites. Mineralogical Magazine, 43 (330) 689-693 doi:10.1180/minmag.1980.043.330.01 |
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| Plain Text | Carswell, D. A., Rice, C. M. (1980) The uranium content of garnet lherzolite xenoliths from kimberlites. Mineralogical Magazine, 43 (330) 689-693 doi:10.1180/minmag.1980.043.330.01 |
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| In | (1980, June) Mineralogical Magazine Vol. 43 (330) Mineralogical Society |
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| Abstract/Notes | SummaryUranium contents ranging from 0.03–1.18 ppm have been determined by delayed neutron activation analysis in a suite of 19 ultrabasic xenoliths (mostly of the common garnet lherzolite type) from the kimberlites of southern Africa. Consideration of these and previous data lead us to conclude that the U content of uncontaminated garnet lherzolite in the uppermost mantle is on average roughly 0.04–0.05 ppm, levels which are sufficient to account for the observed U contents of fresh basalts. Higher U contents in mantle-derived ultrabasic xenoliths are the result of secondary alteration processes, most probably related to infiltration metasomatism stemming from contact with kimberlitic or carbonatitic magma fractions. This introduced U is concentrated along the boundaries of the primary mineral grains and is mostly readily removed by acid leaching. A partial analysis is given for a secondary uraniferous calcium phosphate phase observed in kelyphitic rims around garnets. |
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