摘要
本文论述了招掖金矿区花岗岩中黑云母的晶体化学及结构特征,探讨了黑云母的地质意义,指出了黑云母在该区的岩石学研究及找矿工作中的标型意义.
Statistical data sshow that percentage of biotite of Guo jialing Granite, Linglong Granite and Lianjiahe Granite is 5.99, 3, 46 and 2.13. Chemical analysis and X - ray diffraction analysis reveal the similar crystal chemistry of biotite of Linglong and Lianjiahe Granites、And evotlution trend of biotite from Linglong to Lian Jiahe granite is the increased Fe ualues and decreased Mg ualues. Biotite in Guo Jialing Granite is rich in Mg but poor in Fe、Based on metallogenic series, petrogenesis and crystalli zation temperatures the author considers that Linglong and Lianjiahe Granites are of the same ore - forming and rock - forming series and Guo Jialing Granite, a different series. The former is favourable to the formation of gold depostits、The later is not as the former so as to having no big - sized gold deposits found yet in Guo jialing Granite、Biotite may be a marker for gold prospect in Jiaodong Area.
出处
《地质找矿论丛》
CAS
CSCD
1990年第3期81-92,共12页
Contributions to Geology and Mineral Resources Research
