About features of fluid and hydrothermal inclusions in minerals in kimberlites

Abstract

Characteristics of new genetic type of inclusions being formed during boiling up of magma or hydrotherms is given. It is indicated that the form and sizes of inclusions of boiling up fluids have important role in learning the nature of minerals. Examples of analysis by composition and temperature homogenous process of individual mineral groups’ inclusions from definite deposits of the world have been analyzed. Temperature analysis of individual inclusions homogenous process indicates that under certain conditions segregation of homogenous magmatic melt into two parts takes place – silicate and sulphate.Carried out analysis of chemical and geochemical composition of kimberlites and convergent to them rocks allowed stating that evident variations in the content of petrogenic components are determined both by endogenic and exogenous factors. One should consider those parameters and processes, analysis of which may help in gaining better understanding of mechanisms of kimberlites’ productivity origination. Big attention is paid to mineralogical-petrological characteristics of kimberlite rocks with various productivity, for which examples of estimates of initial substrate evolution are provided and reconstructions of mantle sections are performed, which allowed making an assumption about zonality of the lithosphere mantle of a kimberlite province and its specific diamondiferous areas.