PICRITE FINDS ON KARAGINSKIY ISLAND, BERING SEA

dc.contributor.author	Sidorov Y.G.
dc.date.accessioned	2020-04-15T06:24:15Z
dc.date.available	2020-04-15T06:24:15Z
dc.date.issued	1987
dc.identifier	https://elibrary.ru/item.asp?id=30976928
dc.identifier.citation	TRANSACTIONS (DOKLADY) OF THE USSR ACADEMY OF SCIENCES. EARTH SCIENCE SECTIONS, 1987, 297, 6, 108-110
dc.identifier.issn	0891-5571
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/16743
dc.description.abstract	Picrite was found in outcrops as sills no thicker than one meter and with marginal chill zones. It is massive porphyritic rock with a dark-green to black color. Whitish phenocrysts of olivine and green, more euhedral crystals of clinopyroxene are clearly visible on weathered surfaces. Phenocrysts account for 55 to 70 percent of the rock by volume, depending on its degree of crystallization. The matrix consists of clinopyroxene microlites, immersed in a serpentine-chlorit aggregate and containing separate biotite needles. Matrix-forming clinopyroxene crystals are acicular, columnar, skeletal and dendritic. The accessory minerals are chrome spinellids, magnetite, perovskite, ilmenite, chlorapatite, copper and iron sulfides and native copper.
dc.title	PICRITE FINDS ON KARAGINSKIY ISLAND, BERING SEA
dc.type	Статья

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