THE X-RAY STUDY AND THERMAL ANALYSIS OF AMPHIBOLES
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dc.contributor.author | Batyrmurzaev A.S. | |
dc.contributor.author | Alibekov A.G. | |
dc.contributor.author | Bekieva A.A. | |
dc.date.accessioned | 2022-07-25T04:36:28Z | |
dc.date.available | 2022-07-25T04:36:28Z | |
dc.date.issued | 2004 | |
dc.identifier | https://www.elibrary.ru/item.asp?id=13463074 | |
dc.identifier.citation | Doklady Earth Sciences, 2004, 396, 4, 519-521 | |
dc.identifier.issn | 1028-334X | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/38406 | |
dc.description.abstract | The results of X-ray and thermal analysis of amphiboles can provide insights into their commercial significance and the nature of discordant K-Ar age determinations. Conclusions (1) The unit cell parameters of amphiboles undergo a marked change in a temperature range from 500 to 900°C; (2) unit cell volumes V and lattice parameters a, b, and c of hornblende, arfvedsonite, and pargasite decrease from 500 to 900°C, while the unit cell volume of the riebeckite unit cell passes a minimum at 600°C; (3) angle β for all the studied amphiboles remains constant in a range of 25-900°C, indicating that amphiboles can retain their structure in a wide temperature range; and (4) owing to the thermal stability of the crystal lattice, amphiboles retain radiogenic Ar almost entirely and, thus, can be dated with the K-Ar method. | |
dc.title | THE X-RAY STUDY AND THERMAL ANALYSIS OF AMPHIBOLES | |
dc.type | Статья |
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