NEW VARIETY OF ONGONITE
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dc.contributor.author | Dergachev V.B. | |
dc.date.accessioned | 2020-04-10T02:18:08Z | |
dc.date.available | 2020-04-10T02:18:08Z | |
dc.date.issued | 1988 | |
dc.identifier | https://elibrary.ru/item.asp?id=30954629 | |
dc.identifier.citation | TRANSACTIONS (DOKLADY) OF THE USSR ACADEMY OF SCIENCES. EARTH SCIENCE SECTIONS, 1988, 302, 5, 221-223 | |
dc.identifier.issn | 0891-5571 | |
dc.identifier.uri | https://repository.geologyscience.ru/handle/123456789/16484 | |
dc.description.abstract | Dikes of ultrarare-metal microgranophyre similar to ongonite were recently detected in western Siberia. They are confined to a northeast-striking belt that cuts a hypabyssal granite pluton and is concordant with the dominant strike of associated quartz-wolframite veins and greisen bodies. In this belt, besides post-granite dikes of geochemically diverse microgranite porphyry and granite porphyry and isolated bodies of aplite, pegmatite and microgranite, there are pre-granite dikes of albitite, quartz albitite and albite-granite porphyry, which indicate its prolonged development. Of 131 dikes studied, the pre-granite account for 13.7 percent of them, the granite porphyry for 10 percent and the microgranite porphyry for 76.3 percent. The latter dikes, except for the ongonite, form a complementary series and can be subdivided into ultrarare-metal (ongonite-type) 7 percent, elvan (quartz porphyry) 28, rare-metal 39, subrare-metal 11, and standard 15. | |
dc.title | NEW VARIETY OF ONGONITE | |
dc.type | Статья |
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