矿产与地质
礦產與地質
광산여지질
MINERAL RESOURCES AND GEOLOGY
2014年
2期
175-179
,共5页
金矿床%地质特征%找矿标志
金礦床%地質特徵%找礦標誌
금광상%지질특정%조광표지
gold deposit%geological characteristics%clues for prospecting
沈坝金矿位于秦岭褶皱系南缘，为化探异常发现的金矿床。矿体赋存在志留系下统的梅子垭组第二岩性段中亚段的岩层内。炭质黑云母变斑晶绢云石英片岩夹含炭变质砂岩为含矿主岩。矿床内综合利用元素低，为单一的金矿床。矿石中的 As 含量甚微，表明该矿床不同于展布滇黔桂接壤区和西秦岭地区的微细浸染型(卡林型)金矿床。
瀋壩金礦位于秦嶺褶皺繫南緣，為化探異常髮現的金礦床。礦體賦存在誌留繫下統的梅子埡組第二巖性段中亞段的巖層內。炭質黑雲母變斑晶絹雲石英片巖夾含炭變質砂巖為含礦主巖。礦床內綜閤利用元素低，為單一的金礦床。礦石中的 As 含量甚微，錶明該礦床不同于展佈滇黔桂接壤區和西秦嶺地區的微細浸染型(卡林型)金礦床。
침패금광위우진령습추계남연，위화탐이상발현적금광상。광체부존재지류계하통적매자오조제이암성단중아단적암층내。탄질흑운모변반정견운석영편암협함탄변질사암위함광주암。광상내종합이용원소저，위단일적금광상。광석중적 As 함량심미，표명해광상불동우전포전검계접양구화서진령지구적미세침염형(잡림형)금광상。
Shenba gold deposit locates at south rim of Qingling fold system and it is a gold deposit which is found by geochemical prospecting anomalies.The ore bodies occur in rock stratum of sub-section of second lithological section of Meiziya formation of lower silurian system.The ore-bearing host rock is carbon biotite metacrystal sericitized quartz schist which contains carbon metasandstone.Other elements in the deposit are low and the deposit is a monometallic gold deposit.The content of As in ores is little,which suggests that the deposit is different from superfine impregnated (Carlin-type)gold deposits which distribute in contiguous area of Yunnan,Guizhou and Guangxi and west Qingling area.
