摘要
本文分析了大洪山区钾镁煌班岩中的矿物特征,利用造岩矿物和副矿物的电子探针分析结果与西溴含金刚石钾镁煌斑岩中相应矿物进行对比。并用特征副矿物镁铝榴石、铬铁矿的化学成分作Cr_2O_3—CaO图,Cr_2O_3-MgO图,利用Cr/(Cr+Al)的比值参数,判别岩体的含矿性。认为该区钾镁煌斑岩目前虽然尚未发现金刚石,但成矿有利因素较多。
The characteristics of minerals in lamproite in Mt Dahongshan is discussed and a constrast between components of rock-forming minerals & accessory minerals and those of western Australia district is made in this paper. Cr_2O_3 vs CaO, Cr_2O_3 vs MgO disgram and the parameter of Cr/(C+Al) and characterizing accessory minerals is used to determine the difference between rich ore-bearing bodies and poor ore-bearing ones. There are some favorable factors for forming ores in this district though no diamond has discovered yet so far.
出处
《矿物岩石》
CAS
CSCD
1991年第4期51-56,共6页
Mineralogy and Petrology
关键词
钾镁煌斑岩
矿物特征
含矿性
lamproites, characteristics of mineral, discusses on ore-bearing ability, Mt Dahongshan district
