COMPOSITIONS OF CRYSTALLINE INCLUSIONS IN MAGMATIC OLIVINE FROM THE UDACHNAYA-EAST KIMBERLITE PIPE (SIBERIAN CRATON): CRYSTALLIZATION TEMPERATURE ESTIMATES FOR SUCH ASSOCIATIONS BY USING MINERAL GEOTHERMOMETERS

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In the present work, based on a substantial dataset (43 pairs), we provide estimates of variations in crystallization temperatures of magmatic olivine in kimberlites with Mg# 88–89, as well as crystalline inclusions of spinel-group minerals, ilmenite, rutile, and phlogopite in such olivine. The estimates were obtained using different geothermometers (olivine–chromite, olivine–ilmenite, and ilmenite–titanomagnetite pairs), with careful consideration of compositional variations of the minerals used for calibration. Olivine with Mg# 88–89 is the most widespread by volume among the zones of magmatic olivine crystallization in individual grains from the volcaniclastic kimberlites of the Udachnaya-East pipe. In addition, the study reports 96 chemical analyses of the above-mentioned crystalline inclusions in this olivine.

作者简介

A. Golovin

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

A. Tarasov

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Email: tarasov.alexey@igm.nsc.ru
Novosibirsk, Russia

D. Kuzmin

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Novosibirsk, Russia

N. Pokhilenko

V.S. Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences

Academician of the RAS Novosibirsk, Russia

参考

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