Garnet of the Pyrope-Majorite Series from Coorara Meteorite and Lamprophyres of Central Timan  

作　　者：Natalya I. Bryanchaninova Alexander B. Makeyev 

机构地区：[1]Institute of Geology of Ore Deposits, Petrography, Mineralogy and Geochemistry （IGEM） RAS, Moscow, Russia

出　　处：《Journal of Chemistry and Chemical Engineering》2011年第9期804-809,共6页化学与化工（英文版）

摘　　要：In kersantite and spessartite dikes of Chetlas Kamen＇ in Central Timan among accessory garnets, that are rather rare in lamprophyres, there was discovered few and for the first time high-majorite pyrope garnet with majorite minal Mg3Fe2[SiO4]3 （26-42%）, similar to majorite garnet originating from a meteorite. Majorite discovered in Coorara meteorite is very rare in the terrestrial rocks. As it is shown, there is 18% pyroxene admixture in original analysis of maj orite that is why a surplus of S i appeared in its formula. In rocks, where majorite garnet was found, there are also revealed microcrystalline diamonds.

关 键 词：MAJORITE PYROPE lampropheres Coorara meteorite Timan. 

分 类 号：P578.947[天文地球—矿物学] P588.13[天文地球—地质学]