Picroilmenite paragenesis from kimberlites

Abstract

The picroilmenite paragenesis from kimberlites are given with use of the original program «MineralogicalAnalyse». Using of the program allows reliably and qualitatively to define the paragenetic accessory of minerals from kimberlites and kimberlite-like rocks. The program «MineralogicalAnalyse» is capable to recognize 24 paragenesis among picroilmenite compositions now. Among the designated paragenesis not only typical picroilmenites, but also low-magnesium high-titanium ilmenites, including genetically not directly related to kimberlites, but wide distribution in haloes. Allocated by the program picroilmenite (ilmenite) paragenesis, their interrelations and particularities of chemism were thoroughly described. Given a set of paragenesis most fully characterize paragenetic diversity of picroilmenites from kimberlites and associated placers at present. The proposed set of paragenesis allows to speculate about the deep sources of this mineral in kimberlites.