埃塞俄比亚欧泊矿地质特征研究

Study on the Geological Characteristics of Opal deposits in Ethiopia

埃塞俄比亚某欧泊矿床的区域地质环境中出露的地层、岩浆岩及大地构造位置进行简单概括,对研究区出露的主要岩石主要包括上玄武、中玄武、下玄武及流纹质玻璃,其中在流纹质玻璃中留有蛋白石富集的孔洞。研究区采集样品作了主微量量元素分析及稀土元素分布图。

A simple generalization of the exposed stratum, magmatite and tectonic position in the regional geologicalenvironment of Ethiopia opal deposit was carried out, the main rocks exposed to the study mainly include upper ba-salt, medium basalt, lower basalt, and rhyolitic glass with holes enrichment of opal. The main trace element analysisand rare earth element distribution map of the samples collected in the study area were conducted.