Premium
Clinopyroxenes in Kimberlites of China
Author(s) -
Zhenxin Dong
Publication year - 1992
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/j.1755-6724.1992.mp5003003.x
Subject(s) - kimberlite , xenolith , pyrope , geochemistry , geology , mineral , basalt , ilmenite , hadean , diamond , mineralogy , mantle (geology) , materials science , metallurgy
The author studied the grain size, shape, colour, altered coat, mineral species, chemical composition, end‐ member components and infrared spectra of clinopyroxenes occurring as megacryst, macrocryst and groundmass minerals, intergrowths with pyrope and ilmenite and minerals in deep‐seated xenoliths and inclusions in diamonds in kimberlites of China. The clinopyroxenes under study were compared with megacryst clinopyroxenes in basalts and minerals in their deep‐seated xenoliths and clinopyroxenes in lamproites and minettes. The coexisting clinopyroxene‐pyrope pair was studied. Besides the author also studied the origin of clinopyroxenes in kimberlites, P‐T conditions for their formation and their reflected tectonic environments of the kimberlite formation. He suggests that this mineral is an indicator for diamond exploration.