中国东部金伯利岩中的富钛矿物及矿物新变种——富铬黑镁铁钛矿

Ti-RICH MINERALS AND A NEW VARIETY-CHROMIAN KENNEDYITE FROM KIMBERLITES IN EASTERN CHINA

本文研究了中国东部金伯利岩中富铬黑镁铁钛矿、沂蒙矿、钛铁矿、硅铁石及其富钛物相以及未定名的富钛矿物。富铬黑镁铁钛矿是首次报道的黑镁铁钛矿的新变种,产于山东金伯利岩岩管中。富铬黑镁铁钛矿和沂蒙矿都是上地幔交代产物。河南金伯利岩中的钛铁矿表明该区金伯利岩岩浆为未分异的硅酸盐和碳酸盐岩浆。

This paper studies chromian kennedyite, Yimengite, itmenite, fersilisite and its Ti-rich phase, and unnamed Ti-rich minerals from kimberlits in Eastern China. Chromian kennedyite is a new variety of kennedyite first reported in a kimberlite pipe in Shandong Province, China. Chromian kennedyite and Yimengite are considered as the result of the metasomatism in the upper mantle. Ilmenite in Henan kimberlite implies that kimberlitic magma in the area is undifferentiated magma of silicate and carbonate.