High pressure petrogenesis of Mg-rich garnet pyroxenites from Mir kimberlite, Russia

Autor:	E. E. Laz'ko, Michael F. Roden, A. E. Patino-Douce, E. Jagoutz
Rok vydání:	2006
Předmět:	Majorite Diopside Geochemistry Geology engineering.material Mantle (geology) Geochemistry and Petrology Rutile visual_art engineering visual_art.visual_art_medium Xenolith Kimberlite Ilmenite Petrogenesis
Zdroj:	Lithos. 90:77-91
ISSN:	0024-4937
Popis:	Some Mg-rich garnet pyroxenites from the Mir kimberlite, Siberia, have garnets containing oriented arrays of diopside, rutile + diopside or rutile + Mg-rich ilmenite inclusions. Present mineral compositions require storing of the pyroxenites in the mantle lithosphere at relatively low pressures and temperatures (2.5–3.7 GPa, 680–820 °C). However, the arrays of mineral inclusions are attributed to exsolution from an original higher pressure and/or temperature garnet. Garnets containing arrays of diopside or diopside and rutile exsolved at least a small amount (
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::005460ee68df9628fb2c6d0734172ad4 https://doi.org/10.1016/j.lithos.2006.01.005 Zobrazit plný text záznamu Full Text from ScienceDirect