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望峰金矿带地质特征及成矿规律 总被引:7,自引:0,他引:7
望峰金矿带位于天山西段,属西南天山再生地槽,侵入岩均为华力西中晚期中酸性岩浆岩,金矿脉主要集中分布在博罗科努—阿其克库都克深大断裂以南200~3000m范围内,产于志留系阿河布拉克组第一亚组片麻岩及石英片岩中,属高-中温变质热液矿床。 相似文献
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康古尔塔格金矿带位于塔里木和准噶尔两大板块的碰撞活动地带,EW长200km,有金矿床(点)二十多处。矿床主要产于下石炭统阿奇山组中酸性火山岩中,具层控性,各类岩石Au平均含量高出地壳克拉克值的3—11倍。华力西中晚期—印支早期中酸性浅成相侵入岩类与金成矿关系密切。沿康古尔塔格和苦水断裂发育一系列平行韧性剪切带,是金矿床产出的主要部位。金矿带具水平分带和垂直分带性,金矿脉呈带呈群分布,成矿具有阶段性,矿床类型主要为蚀变岩型和石英脉型,成因属中浅成中低温热液型矿床。 相似文献
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抱板金矿带金矿床地质特征和成矿规律 总被引:3,自引:0,他引:3
矿带中的金矿床以破碎带蚀变岩型金矿为主,金矿化与蚀变作用、燕山期岩脉、NE向戈枕断裂及环形构造关系密切.矿带具有多缀控矿构造,矿床分布具有等距性. 相似文献
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吉林金银别地区位于华北地台北缘东段,夹皮沟金矿带的南东延长部分,清茶馆—白水滩断裂构造带与北东向溜河构造带交汇处。区内金矿床、金矿点多分布于太古宙、古生宙表壳岩中,矿体分布主要受NE、NW向断裂构造控制。文章通过对金矿地质特征和控矿因素的总结分析,指出找矿方向。 相似文献
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云南广南地区老寨湾微细粒浸染型金矿床地质特征与成矿规律 总被引:3,自引:0,他引:3
老寨湾金矿区位于滇黔桂“西南金三角”,是云南目前发现的最大的低品位微细粒浸染型金矿床。矿床产于加里东古隆起不整合面之上泥盆系下统蚀变细粒石英砂岩中,金矿是由沉积形成的含矿层经后期的构造运动、岩浆活动、淋滤作用等使含矿层中的Au进一步活化、迁移、富集而成的,构造、层位等控矿明显。蚀变是区内的找矿标志之一,金矿的形成与硅化、褐铁矿化、黄铁矿化等蚀变有关。金矿床的成矿与区域大地构造发展、深断裂发育、岩浆活动、成矿热液活动等密切相关。 相似文献
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《China Geology》2020,3(3):473-489
Fluorite is one of the important mineral raw materials in the industry. In China, it is mainly distributed in the provinces and regions such as Hunan, Zhejiang, Jiangxi, Inner Mongolia, Fujian, and Henan provinces, boasting huge reserves and large numbers of deposits. However, most of the fluorite deposits are on a small or medium scale. The main fluorite deposits in China were studied in this paper. Their geological features and metallogenic regularity were summarized and compared. Meanwhile, based on their main genetic factors including metallogenic fluid sources and main metallogenic geological processes, they were divided into two groups, namely meso-epithermal deposits and magmatic-hydrothermal deposits. Furthermore, based on the prospecting achievements and research progress obtained in fluorite deposits in recent years, prospecting potential predictions were made for the metallogenic prospect areas and major prospecting areas of fluorite in China. This aims to provide a theoretical basis and direction for future fluorite prospecting in China. 相似文献