摘要
产于河南桐柏回龙地区的矽卡岩型符山石玉，通过镜下鉴定，能谱、光谱、电探测试分析，认为回龙玉是由多种矽卡岩矿物集合体组成的岩石。其中呈黄绿色色调均匀半透明的回龙玉，主要由符山石矿物集合体组成。矿物颗粒极细，质地细腻，硬度为７．比重３．２～３．４。研究后认为回龙玉矿是在高温低压的环境下，迅速冷凝后形成的特殊矽卡岩型矿床。
The skarn type vesuvianite, occurred in Huilong region,Tongbai,Henan Province is considered to be an aggregate of skarn minerals,based upon the identification under the microscope and analysis by energy spectrum,spectrometry and electron microprobe. The yellow-green and semiopaque jade is mainly consisted of mineral aggregate of resuvianite. Its grains are very fine with hardness of 7,specific weight of 3.4.It is concluded that the jade deposit is a special skarn type deposit formed in a quick cooling evironment of high temperature and low pressure.
出处
《矿产与地质》
1996年第4期256-258,共3页
Mineral Resources and Geology
