Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: International Multidisciplinary Scientific Geoconference (SGEM); Albena, BULGARIA; Albena, BULGARIA
Год издания: 2015
Ключевые слова: ores of the Norilsk type, X-ray, Mossbauer spectroscopy, scanning electron microscopy, Electron microscopy, Iron ores, Iron research, Nickel, Ores, X rays, Demagnetizing factors, High temperature crystallization, Mechanical mixtures, Ore formation process, Remanent magnetization, Ssbauer spectroscopies, Thermomagnetic curves, Wide temperature ranges, Solid solutions
Аннотация: Using the magnetic methods, X-ray and Mossbauer spectroscopy, scanning electron microscopy, there were studied the samples of Norilsk type ores in order to identify compounds containing Cu, Ni, Co. The samples have a complex and diverse composition of a wide range of values having the remanent magnetization and its resistance to vaПоказать полностьюrious demagnetizing factors. The presence of steps and peaks on thermomagnetic curves indicates the presence of a mechanical mixture of two or more ferrimagnetic phases. It is confirmed by the discrepancy of the Curie temperature in the "heating-cooling" cycle. The research showed that iron and sulfur are spread irregularly over the scanned area. There are areas, strongly enriched by Cu. The presence of the native elements and the characteristic structures of the solid solutions decomposition testify to the reducing mode of ore formation processes in a wide temperature range. The presence of characteristic structures of solid solutions "pyrrhotite-pentlantide", "pyrrhotite-chalcopyrite" indicates the nature of high-temperature crystallization of sulfide ore in a wide range of temperatures.
Журнал: SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING, SGEM 2015, VOL I
Номера страниц: 269-274
ISSN журнала: 13142704
Место издания: SOFIA
Издатель: STEF92 TECHNOLOGY LTD