关键词: 纯橄岩, 橄榄石, 铬铁矿, 出溶页片, 莱芜

Abstract:

Chromite lamellae are found in olivines (Fo=90) of a dunite xenolith in dioritic intrusion of Laiwu, Shandong Province, East China. Metasomatic veinlets in the xenolith , mineral chemistry and a topotaxial relationship between olivine and lamellae indicate that chromite lamellae in olivine can be found in high-deformed high-Cr dunite oxidized by matasomatic fluids with lower equilibrated temperature only

Key words: Laiwu, Dunite, Olivine, Chromite, Exsolution lamellae