AN EXPERIMENTAL DEMONSTRATION OF DIAMOND FORMATION IN THE DOLOMITE-CARBON AND DOLOMITE-FLUID-CARBON SYSTEMS
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dc.contributor.author | Sokol A.G. | |
dc.contributor.author | Borzdov Y.M. | |
dc.contributor.author | Pal'yanov Y.N. | |
dc.contributor.author | Khokhryakov A.F. | |
dc.contributor.author | Sobolev N.V. | |
dc.date.accessioned | 2021-02-24T07:41:33Z | |
dc.date.available | 2021-02-24T07:41:33Z | |
dc.date.issued | 2001 | |
dc.identifier | https://elibrary.ru/item.asp?id=13381896 | |
dc.identifier.citation | European Journal of Mineralogy, 2001, 13, 5, 893-900 | |
dc.identifier.issn | 0935-1221 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/25549 | |
dc.description.abstract | The results of a study of diamond crystallisation in dry and fluid-rich dolomite-carbon systems are presented. For the dry system an induction period preceding spontaneous diamond nucleation was found of about 4 h at 7 GPa, 1700 degreesC. No diamonds were observed after 42 h of reaction at 5.7 GPa, 1420 degreesC. Adding H2O and H2O-CO2 fluids to the dolomite-carbon system resulted in spontaneous diamond nucleation at 1420 degreesC, and growth of diamond on seed crystals at 1300-1420 degreesC. In the presence of H2O or H2O-CO2 fluids, dolomite decomposes to dolomite solid solution + brucite + aragonite. Results of the experiments indicate that dolomitic melts in the mantle, enriched in H2O and CO2, promote the formation of natural diamond. | |
dc.subject | diamond crystallisation | |
dc.subject | dolomite | |
dc.subject | carbon | |
dc.subject | fluid | |
dc.subject | HP/HT experiments | |
dc.title | AN EXPERIMENTAL DEMONSTRATION OF DIAMOND FORMATION IN THE DOLOMITE-CARBON AND DOLOMITE-FLUID-CARBON SYSTEMS | |
dc.type | Статья |
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