甘肃厂坝铅锌矿床地质特征、矿床成因及成矿模式的探讨
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摘要
甘肃成县厂坝铅锌矿床包括厂坝、小厂坝和李家沟铅锌矿,自20世纪六七十年代发现、勘查、开采以来,先后提交各类铅锌资源储量1050多万吨,为陇南乃至甘肃经济发展起到了一定的推动作用。在此,作者觉得有必要对矿床整体特征和最近几年开展的接替资源勘查项目取得的主要成果做一简介,并结合最新理论和工作中的心得对矿床成因和成矿模式进行探讨。认为厂坝铅锌矿为"多元成矿"模式,早期混浆期热水喷流沉积为主要成矿模式,后期热液改造、变质再造成矿作用和次生变化等为次要成矿模式。
The changba Pb-Zn deposits in chengxian county of Gansu province, including Changba Xiaochangba and Lijiagou Pb-Zn deposit, it has submitted more than 10.5 million tons of various kinds of Pb-Zn resource reserves since it was discovered, explored and exploited in the 1960 s and 1970 s.which has played a certain role in promoting the economic development of Longnan and even Gansu. In this paper, the author thinks it is necessary to make a brief introduction to the overall characteristics of the deposit and the results of the succession resources exploration projects carried out in recent years,and discuss the genesis and metallogenic model of the deposit in combination with the latest theory and work experience. It is considered that the Changba Pb-Zn deposit is a " multiple mineralization" model, the hot water jet deposition in early mixing stage is the main metallogenic model, the later hydrothermal alteration, metamorphic re-mineralization and secondary alteration are secondary model.
The changba Pb-Zn deposits in chengxian county of Gansu province, including Changba Xiaochangba and Lijiagou Pb-Zn deposit, it has submitted more than 10.5 million tons of various kinds of Pb-Zn resource reserves since it was discovered, explored and exploited in the 1960 s and 1970 s.which has played a certain role in promoting the economic development of Longnan and even Gansu. In this paper, the author thinks it is necessary to make a brief introduction to the overall characteristics of the deposit and the results of the succession resources exploration projects carried out in recent years,and discuss the genesis and metallogenic model of the deposit in combination with the latest theory and work experience. It is considered that the Changba Pb-Zn deposit is a " multiple mineralization" model, the hot water jet deposition in early mixing stage is the main metallogenic model, the later hydrothermal alteration, metamorphic re-mineralization and secondary alteration are secondary model.
引文
[1]窦元杰,刘广富等.甘肃省西成铅锌矿田成矿规律及1:5万成矿预测研究报告.1984.
[2]周洪利,田国强等.甘肃省成县小厂坝铅锌矿详查报告(900米标高以下).2007.
[3]孙省利,高兆奎,魏晓辉,曾允孚.西成铅锌成矿带泥盆系硅质岩地质地球化学特征与热水沉积成矿.西北地质.2000,33(2).
[4]李建中,高兆奎.1993.西秦岭下泥盆世沉积环境及其与铅锌矿的关系.地质论评,39(2):156-162.
[5]梁旭辉,景煜臻,王锦涛.甘肃省西秦岭代家庄-厂坝地区矿产地质调查成果报告.2015.
[6]王锦涛.甘肃省成县厂坝铅锌矿接替资源勘查报告.2017.
[2]周洪利,田国强等.甘肃省成县小厂坝铅锌矿详查报告(900米标高以下).2007.
[3]孙省利,高兆奎,魏晓辉,曾允孚.西成铅锌成矿带泥盆系硅质岩地质地球化学特征与热水沉积成矿.西北地质.2000,33(2).
[4]李建中,高兆奎.1993.西秦岭下泥盆世沉积环境及其与铅锌矿的关系.地质论评,39(2):156-162.
[5]梁旭辉,景煜臻,王锦涛.甘肃省西秦岭代家庄-厂坝地区矿产地质调查成果报告.2015.
[6]王锦涛.甘肃省成县厂坝铅锌矿接替资源勘查报告.2017.