摘要
为研究柴达木盆地北缘高压—超高压变质带榴辉(闪)岩中钛矿物的赋存状态及载体之间的差异,在前人研究的基础上,通过2016年地表查证,从岩相学、矿物学、岩石地球化学、人工重砂、选矿实验等方面进行了比对研究。结果表明:鱼卡和丁叉叉南坡榴辉岩中的钛载体主要为金红石,而胜利口榴闪岩中钛载体主要为钛铁矿和榍石,进一步证实了榴辉岩在退变阶段和钛成矿作用中金红石转化为钛铁矿的理论观点。研究成果为柴达木盆地北缘高压—超高压变质带内寻找榴辉岩型金红石矿奠定了基础。
In order to study the occurrence and carrier differences of eclogite(amphibolite) titanium minerals in the high pressure-ultrahigh pressure metamorphic belt in the northern margin of Qaidam,based on the collection of previous data,through the surface verification in 2016,a systematic comparative study was carried out from the aspects of lithofacies,mineralogy,petrogeochemistry,artificial heavy sand,and beneficiation experiment. The comprehensive study shows that rutile is the main titanium carrier in the eclogite of the south slope Yuqia and Dingchacha,while ilmenite and titanite are the main titanium carriers in the eclogite Shenglikou,which further confirms the theoretical viewpoint that the transformation of rutile into ilmenite in the degenerative stage and titanium mineralization of eclogite. The research results can lay a foundation for the search of eclogite-type rutile ore in the high-pressure and ultrahigh pressure metamorphic belt in the north margin of Qaidam basin.
作者
张海青
马玉成
何存发
李华
任文恺
王军
ZHANG Haiqing;MA Yucheng;HE Cunfa;LI Hua;REN Wenkai;WANG Jun(The Fourth Geological Survey Institute of Qinghai,Xining 810008,China)
出处
《青海大学学报（自然科学版）》
2019年第2期100-106,共7页
Journal of Qinghai University(Natural Science)
基金
青海省地质勘查基金项目(青地调勘[2016]165号)
关键词
鱼卡
丁叉叉南坡
胜利口
榴辉岩
榴闪岩
金红石
Yuqia
south slope of Dingchacha
east Shenglikou
eclogite
garnet amphibolites
rutile
