摘要
任家山软玉矿位于红柳河—牛圈子—洗肠井蛇绿岩南侧的玉石山地区,该矿是近年来甘肃首次发现的软玉矿床。软玉矿体产出于基性岩和酸性岩接触变质带内,带宽26 m,露头长约300 m,矿物成分主要为透闪石,其次为阳起石,透闪石含量大于90%,具纤维变晶结构,块状构造,玉石种类为墨玉。其成因类型与国内发现的软玉矿均不同,属于基性岩接触交代型矿床,是新发现的另一种成因类型,具有重要的研究价值和找矿指导意义。
Renjiashan nephrite ore is located in Yushishan area, south of the Hongliuhe-Niujuanzi-Xichangjing Ophiolite Belt, which is the first nephrite deposit discovered in Gansu Province in recent years.Nephrite ore bodies produced in the contact metamorphic zone between basic rocks and acid rocks with width of26 m and length of 300 m. The most mineral of the nephrite ore is tremolite whose content is more than 90%followed by actinolite. It has fibrous crystalloblastic texture and massive structure. The type of jade is black jade.The genetic type of the Rejiashan nephrite ore is different from that of other nephrite deposits found in China. It belongs to the basic rock contact metasomatic type deposit that is another genetic type discovered newly and has important research value and prospecting guiding significance.
作者
任文秀
朱永新
胡妍
刘子锐
王怀涛
李增
REN Wen-xiu;ZHU Yong-xin;HU Yan;LIU Zi-rui;WANG Huai-tao;LI Zeng(Geological Survey of Gansu Province,Lanzhou 730000,China)
出处
《甘肃地质》
2020年第3期73-77,共5页
Gansu Geology
基金
中国地质调查局项目(DD20190379、1212011120556)
自然基金项目(41972020、20JR5RA039)
2020年陇原青年创新创业人才项目(地学大数据综合产品研发与应用—甘肃金川超大型铜镍矿深部及外围找矿研究)资助。
关键词
软玉
任家山
甘肃省
nephrite
Renjiashan
Gansu Province
