DOI:
矿床地质:1995,Vol.>>Issue(4):355-361

河北金家庄金矿床矿物化学及金银赋存状态研究
中国科学院高能物理所
Mineralogical chemistry and modes of occurrence of gold and silver in the Jinjiazhuang gold deposit, Hebei Province
()
本文二维码信息
码上扫一扫!

摘要
图/表
参考文献
相似文献

摘要点击次数: 1748   全文下载次数: 1440   点此下载全文
        
中文摘要:河北金家庄金矿是一产在透辉石岩体中的矿床。本文用多种方法对该矿床中的主要矿石矿物进行了矿物化学、矿物标型和金、银赋存状态等方面的研究。不仅发现了含铂、钯的黄铜矿和闪锌矿,而且还找到了针镍矿。为探讨此金矿床的成矿特点提供了一些矿物学依据。
Abstract:The Jinjiazhuang gold deposit is located in the transitional belt between Inner Mongolia geoaxis and Yanshan subsidence zone on the northern margin of North China platform. Orebodies mostly occur in fractural shatter zones within Xiaozhangjiakou altered diopsidite body. Gold ores are mainly of shattered altered rock type and subordinately auriferous quartz veins. The shattered altered rock type ores have rather complex mineral assemblage: besides large quantities of metallic sulfides and oxides (pyrite, galena, sphalerite, chalcopyrite and magnetite), there are commonly carbonae minerals (smithsonite, cerussite and thodochrosite). Millerite was also found in this deposit. X-ray diffraction analyses show that unit cell parameters of pyrite ( a0 =5.424 ~ 5.431 A this gold deposits is obviously larger than the theoretical value (a0 = 5.417 A) and its unit cell parameters in other types of gold deposits (a0 = 5.417 ~ 5.418 A ). The unit cell parameters of galena(a0 = 5.037~ 5.491 A ) are slightly smaller than the standard value. Chemical analyses of individual minerals indicate that gold content of major minerals seems very low, being 0.06×10-9~0.35×10-9 in pyrite and 0.1×10-9 in galena. This suggests that gold in ores rarely enters crystal lattices, and occurs mainly in the form of independent minerals, such as electrum and native gold. With the help of electron microprobe analysis, the author not only detected millerite, but also found that platinum group elements are extremely abundant in chalcopyrite ( Pt = 0.65% ~ 3.l%, Pd = 0.09%~ 0.44%). All these characteristics may show some relationship with diopsidite.
文章编号:    
中图分类号:     
文献标志码:

引用文本:
马配学.1995.河北金家庄金矿床矿物化学及金银赋存状态研究[J].矿床地质,14(4):355~361
.1995.Mineralogical chemistry and modes of occurrence of gold and silver in the Jinjiazhuang gold deposit, Hebei Province[J].Mineral Deposits14(4):355~361
图/表
您是第241663141位访问者  京ICP备05032737号-5  京公网 安备110102004559
主管单位:中国科学技术协会 主办单位:中国地质学会矿床地质专业委员会 中国地质科学院矿产资源研究所
地  址: 北京市百万庄大街26号 邮编:100037 电话:010-68327284;010-68999546 E-mail: minerald@vip.163.com
本系统由北京勤云科技发展有限公司设计 
手机扫一扫