摘要
黑龙江鸡东四山林场金银矿床的初步普查结果表明,矿区内主要矿产包括金、银、铜、钼等,并初步控制Ⅰ、Ⅱ号金银矿体,探求金平均品位5.09×10-6、资源量近3 t,银平均品位66.18×10-6、资源量30 t。区内由南向北依次为铜、钼矿床、金银矿床、铜矿、金矿化,具有东西成带,南北成行的分布特点。地质、地物和地化综合研究表明,上元古界阎王殿组为本区金、多金属主要矿源层,中生代以来的构造岩浆活动与成矿关系密切,矿体主要赋存于地层与岩体的接触带中。金银矿床成因为闪长玢岩岩浆活动期和期后含金银的热液活动富集形成的热液型金银矿床,并总结了进一步找矿的标志。
The result of geologic scouting for the deposit shows that the most minerals include gold, silver, copper, molybdenum and so on; the No. 1 and No.2 ore bodies were controlled primarily. The average grades of gold and silver are 5.09×10^-6and 66.18×10^-6, respectively; their reserves are nearly 3 t and 30 t. From south to north there exist copper, molybdenum and gold-silver deposits, copper ore and gold metallization in turn in the studied area, which are distributed as belts in directions WE and NS, The comprehensive study in geology, geophysics and geochemistry shows that Yanwangdian Formation in Upper Proterozoic is the main source bed of gold and polymetal. The structural and magmatic activities since Mesozoic have been related closely to mineralization, the ore bodies occur in the contact zones of the strata and the rock masses. The genesis of the gold-silver deposit belongs to hydrothermal one, which formed in concentration of gold-silver bearing thermal fluid from diorite-porphyrite in active state and after active state. The authors summarized the clue for further prospecting.
出处
《世界地质》
CAS
CSCD
2008年第1期14-18,共5页
World Geology
关键词
矿床成因
找矿标志
金银矿床
鸡东
黑龙江
deposit genesis
clue for prospecting
gold-silver deposit
Jidong
Heilongjiang
