Тип публикации: статья из журнала
Год издания: 2020
Идентификатор DOI: 10.3390/min10080688
Ключевые слова: disseminated ores, mineralogy and geochemical features, norilsk 1 intrusion, platinum–copper–nickel deposits
Аннотация: The purpose of this study is to show the patterns of distribution of disseminated sulfide in layered rocks based on the numerous geochemical and mineralogical data obtained for eight boreholes of the Norilsk intrusion (southern part of the Norilsk 1 deposit). There is a common trend of sulfide liquid fractionation in the Main Ore HПоказать полностьюorizon, which is composed of picritic and taxite (or olivine) gabbro-dolerites: the Ni/Cu in both rock types decreases down all sections, indicating an increase in the degree of fractionation of the sulfide liquid from top to bottom. On the contrary, the Ni/Fe ratios in pentlandite increase in this direction due to an increase in sulfur fugacity. However, picrite and taxite/olivine gabbro-dolerites are very distinctly separated by Ni/Cu values: these values are >1 in picritic gabbro-dolerite while they are always
Журнал: Minerals
Выпуск журнала: Vol. 10, Is. 8
Номера страниц: 1-22
ISSN журнала: 2075163X