东川拖布卡金矿矿化层位与找金方向

超大型拖布卡金矿的发现,表明东川地区具备找金前景.“黑层”是金的成矿前提,断裂加蚀变是成矿必备条件,基性与中性岩脉在容矿层中的侵位,是找富金的重要标志.金成矿全过程应是多旋回（晋宁、华力西、燕山、喜马拉雅山）成矿作用,且受剪切破碎带控制的黑层型金矿.     

香格里拉县红牛矽卡岩型铜矿

“三江成矿带”内的红牛铜矿,赋存于大理岩边部矽卡岩化蚀变带及角岩体中。赋矿地层为曲嘎寺组第二段。对矿石结构、构造及矿石矿物成分、共生伴生关系等进行研究,明确找矿标志。     

超大型会泽富锗铅锌矿复合成因

会泽富锗铅锌矿。是近年老矿山深部找矿取得重大突破的典范,而其成因则是当前研究、讨论的热点。笔者认为该矿之形成,既非“MVT型”,亦非“VMS型”,而是与深部隐伏燕山期酸性岩有关的中温岩浆热液叠加、改造、富化的复成因矿床。自加里东期起长期处于张裂环境。深部昭通．弥勒硅镁层隆起,既是幔源玄武岩（热地幔柱）上涌的前奏,又为深部矿源上升创造畅通空间。与多旋回活动的小江深断裂相沟通的NE向矩形断裂网,是导矿、输矿、储矿的有利构造。继火山热液成矿之后,伴随燕山期褶皱、断裂和深部酸性岩浆的上升,发生第二期叠加矿化．矿石中伴生与酸性岩有关的元素组合．并以与酸性岩有关的锗富集为特征。     

Geochronology and mineralogy of the Weishan carbonatite in Shandong province,eastern China

The Weishan REE deposit is located at the eastern part of North China Craton (NCC), western Shandong Province. The REE-bearing carbonatite occur as veins associated with aegirine syenite. LA-ICP-MS bastnaesite Th-Pb ages (129 Ma) of the Weishan carbonatite show that the carbonatite formed contemporary with the aegirine syenite. Based on the petrographic and geochemical characteristics of calcite, the REE-bearing carbonatite mainly consists of Generation-1 igneous calcite (G-1 calcite) with a small amount of Generation-2 hydrothermal calcite (G-2 calcite). Furthermore, the Weishan apatite is characterized by high Sr, LREE and low Y contents, and the carbonatite is rich in Sr, Ba and LREE contents. The δ¹³C_V-PDB (−6.5‰ to −7.9‰) and δ¹³O_V-SMOW (8.48‰–9.67‰) values are similar to those of primary, mantle-derived carbonatites. The above research supports that the carbonatite of the Weishan REE deposit is igneous carbonatite. Besides, the high Sr/Y, Th/U, Sr and Ba of the apatite indicate that the magma source of the Weishan REE deposit was enriched lithospheric mantle, which have suffered the fluid metasomatism. Taken together with the Mesozoic tectono-magmatic activities, the NW and NWW subduction of Izanagi plate along with lithosphere delamination and thinning of the North China plate support the formation of the Weishan REE deposit. Accordingly, the mineralization model of the Weishan REE deposit was concluded: The spatial-temporal relationships coupled with rare and trace element characteristics for both carbonatite and syenite suggest that the carbonatite melt was separated from the CO₂-rich silicate melt by liquid immiscibility. The G-1 calcites were crystallized from the carbonatite melt, which made the residual melt rich in rare earth elements. Due to the common origin of G-1 and G-2 calcites, the REE-rich magmatic hydrothermal was subsequently separated from the melt. After that, large numbers of rare earth minerals were produced from the magmatic hydrothermal stage.     

八庙-青山金红石矿床地球化学特征

金红石矿床含矿岩石常量元素总体上与玄武岩接近,但以低硅,高钛,高ＣＯ２,高碱度为特征。矿床微量元素与地壳的差别显著,稀土元素较高,分布模式呈轻稀土富集型,Ｅｕ一般为正常型与碧玄岩最接近,Ｔｉ与Ｂａ,Ｃｏ,Ｐｂ,Ｓｒ,Ｔｈ,Ｖ,Ｙ及稀土元素呈正相关与Ｃｒ和Ｎｉ呈负相关,δ＾３４Ｓ多数与（超）铁镁质岩石接近,最大值小于且靠近现代海水。     

江西银山铜多金属矿床成因再认识

从矿体形态、蚀变、矿化分带、稳定同位素和矿物包裹体等方面论述了矿床与本区岩浆活动在时间、空间和成矿物质来源等方面的关系,提出了银山铜多金属矿床是与燕山早期岩浆活动有关的火山—次火山热液矿床的新认识。     

新疆哈密卡拉塔格铜(锌)矿红石幅1∶50 000矿产地质图数据库

新疆哈密卡拉塔格铜(锌)矿红石幅(K46E009008)1∶50 000矿产地质图数据库是根据《固体矿产地质调查技术要求(1∶50 000)》(DD2019-02)和行业其他标准及要求,在充分利用1∶200 000、1∶50 000等区域地质调查工作成果资料的基础上,采用数字填图系统进行野外地质专项填图,并应用室内与室外填编图相结合的方法完成。本数据库将中-上奥陶统荒草坡群大柳沟组、下志留统红柳峡组和卡拉塔格组的建造类型进行了重新划分,把图幅内侵入岩时代划分为志留纪、泥盆纪、二叠纪等3期,建立了岩浆岩演化序列。图幅区内有大中小型矿床和矿点共8个,成矿时代集中分布在志留纪、石炭纪,赋矿围岩为火山碎屑岩和次火山岩,该区优势矿产以铜锌金为主,矿床类型以VMS型和次火山热液脉型矿床为主,分布在图幅东南一带。除金属矿产外,尚有膨润土矿床产出,具有较好的找矿潜力。本数据库包含5个地层单位和3期岩浆岩资料,数据量约为 15.1 MB。这些数据充分反映了该图幅 1∶50 000 矿产地质调查示范性成果,对该区矿产资源研究和勘查等具有参考意义。     

云南广南县老寨湾金矿地质特征及找矿标志

广南县老寨湾金矿位于滇、黔、桂“金三角”重要成矿区带上,金矿体矿体呈似层状赋存于断层构造破碎带或层间构造破碎带中,构造控矿明显。矿体围岩均为下泥盆统坡松冲组第一段(D1ps1)硅化石英砂岩;矿床成因属中-低温热液叠加改造型金矿床,断层构造、硅化等矿化蚀变及地球化学异常是重要的找矿标志。     

贵州省松桃县木耳溪锰矿地质特征及找矿方向

贵州松桃县木耳溪锰矿为典型的层控型锰矿床,矿体呈层状赋存于南华系下统大塘坡组第一段(Pt2b3d 1)底部的炭质页岩中,产出层位稳定,矿体产状与围岩产状一致。通过统计对比,锰矿层的矿化程度与含锰岩系的厚度呈正比,即当南华系大塘坡组地层厚度大于15m时,有可能成为锰矿的主要找矿方向。     

大兴安岭南东段龙头山银铅锌多金属矿床成矿地质特征与远景评价

文章阐述了龙头山银铅锌多金属矿床的地质特征,初步确定了矿床的成矿期与成矿阶段、蚀变作用与蚀变分带,以及控矿构造系统与空间变化等;通过合理的探矿工程并借助于先进的地球物理探测手段,基本探明了Ⅰ、Ⅱ号矿带内矿体的空间产出形态、规模和产状,大致查明了矿石的类型、结构构造以及矿化特征,并合理地圈定了矿体;通过综合取样分析,估算并预测了远景资源储量.