甘肃阿克塞苦水泉锰矿地质特征及找矿潜力分析

苦水泉锰矿地处甘肃阿尔金成矿带,属浅海相沉积型锰矿,赋存于蓟县系第2岩组碎屑岩—碳酸盐岩沉积地层中,矿体严格受含锰岩系的控制。该套含锰岩系在本区呈东西向条带状分布,出露长度80 km,其中已发现苦水泉锰矿、青砂沟锰矿、赛马沟锰矿。通过分析苦水泉锰矿地质特征,与阿克塞县青砂沟大型锰矿、赛马沟锰矿进行对比研究,认为苦水泉锰矿具有寻找大中型沉积型锰矿的地质条件,有进一步扩大找矿前景的潜力。     

重庆市秀山县老田庄锰矿地质特征及矿床成因分析

南华系下统大塘坡组第一段为本区的含锰岩系,其厚度及岩性组合与锰矿有着直接的关系。本区锰矿属沉积菱锰矿矿床类型,具有多层含矿性。古地理、古构造对锰矿沉积的控制作用,在还原环境的条件下,沉积了一套以含炭质水云母页岩为主的黑色含锰岩系地层,锰矿即产于含锰岩系地层之底部。     

贵州松桃地区杨里长锰矿床地质特征及勘探前景分析

研究区内锰矿赋存在南华系地层中,为三阳断裂带;多源性是该地区锰矿成矿物质来源的特点,且热水活动影响了锰矿成矿,陆缘水力较小的浅海使矿物质沉积富集,为形成锰质还原盆地提供有利环境。矿床成因为天然气渗漏;含锰岩系(大塘坡一段)厚度自南向北逐渐变薄,直至尖灭;区域上位于成矿带东南部区域锰矿成矿过渡区域,其含锰层段的厚度较薄,含矿性较差,岩性由含锰白云岩、炭质页岩、含锰炭质页岩组成;区内东南角存在小型矿体分布的可能,后期勘探找矿应向该方向进行。     

四川黑水县姑俄夸锰矿地质特征及成因

姑俄夸锰矿属扬子地台西缘之松潘—甘孜地槽南缘凹陷盆地边缘沉积;锰矿赋存于下三叠系菠茨沟组上段(T1b2),严格受地层、岩性控制;整个含锰岩系显示海退式沉积特征;综合研究认为姑俄夸锰矿属沉积变质锰矿床;提出4种找矿标志。     

贵州遵义共青湖锰矿床主要地质特征及深部找矿潜力分析

共青湖锰矿床与铜锣井大型锰矿床、深溪大型隐伏富锰矿床同位于深溪-八里Ⅲ级地堑盆地中,含锰岩系为茅口组第三段,锰矿体位于含锰岩系下部,矿体埋深800～450 m,锰矿体厚度小但较稳定,一般为0.8～0.9 m, Mn平均品位为16.62%,目前深部矿体尚未圈边。通过对共青湖锰矿床地质特征分析,认为其属“气液喷溢沉积型”锰矿床,总体位于成锰过渡相中,显示该区深部有较大找矿潜力。     

鄂东北孙冲锰矿床地质特征及找矿前景

鄂东北孙冲锰矿床是在桐柏—大别造山带东端发现的一处沉积变质型锰矿床。区内目前已发现16条锰矿(化)体,均产于新元古界红安岩群黄麦岭组下段,赋矿岩性主要为大理岩,矿石矿物主要为菱锰矿、软锰矿和硬锰矿。锰矿体明显受地层控制,标志层明显,延伸稳定,由于区内褶皱构造复杂,矿体普遍存在褶皱变形,产状局部变化较大。通过对该锰矿体地质特征、控矿因素、矿床成因及找矿标志的研究探讨,认为区内矿体深部褶皱转折端、研究区周边及外围地区仍存在较大的锰矿找矿潜力。     

重庆市秀山县老田庄锰矿矿床成因及找矿标志分析

重庆市秀山县位于渝、湘、黔"中国锰业金三角"的最佳位置。秀山县锰矿主要产出于南华系大塘坡组地层中,分布广泛。本区锰矿属沉积菱锰矿矿床类型,具有多层含矿性,沉积了一套以含炭质水云母页岩为主的黑色含锰岩系地层,文章对重庆市秀山县老田庄锰矿矿床成因及找矿标志进行了分析探讨。     

湖南省马底驿组锰矿找矿方向研究

通过对湖南省马底驿组锰矿成矿地质条件的综合研究,认为湖南省马底驿组地层有良好的锰矿找矿前景,区域找矿方向主要在湘西南地区,含锰岩系、区域变质程度、风化地质环境及构造运动控制锰矿床的定位。     

内蒙古额济纳旗西沙婆泉地区锰矿地质特征及资源潜力分析

西沙婆泉地区锰矿床位于属于北山成矿带东段,赋存于下石炭统红柳园组地层中,赋矿岩石为含铁锰硅质岩,主要成因类型属沉积变质型。文章通过对该锰矿床进行区域成矿地质条件、矿区地质特征、矿体特征及矿石特征进行分析研究,认为该区的红柳园组地层是寻找隐伏矿体的重要层位,F2断裂是寻找淋滤沉积型锰矿体的有利部位。     

陕西省石泉县池河镇龙王洞锰矿地质特征

陕西省石泉县龙王洞锰矿赋存在新元古界震旦系陡山沱组地层中,锰矿体呈层状、透镜状,总体走向300(°)~340(°),倾向北东,长40~330 m,宽20~50 m,主要矿物成分为软锰矿,少量水锰矿和褐锰矿,含锰岩系由凝灰岩、硅质岩、锰矿层和黑色炭质绢云母片岩沉积组合;锰矿体高精度磁测异常和极化率异常具有较好的一致性,是寻找该类型锰矿的重要标志。     

沉积锰矿铁锰分离的热力学分析和实验研究

通过热力学理论分析和实验研究，确定了成矿作用中铁锰分离的－ｐＨ范围和分离形式，推测了铁锰分离的有利地球化学条件。根据我国主要锰矿中铁锰分离的特，认为低铁锰矿必须经过源区和沉积区２次有效的分离才能形成。     

河南省卢氏县杨树沟锰矿地质特征及成因分析

杨树沟锰矿地处秦岭褶皱系北缘、北秦岭褶皱带北西端,元古界地层褶皱强烈,断裂构造发育,岩浆岩活动频繁,矿产种类繁多。分析杨树沟锰矿地质背景与矿区地质特征,认为杨树沟锰矿体受层位控制,古地理环境为海相,先沉积形成含锰矿的泥质地层,后经成岩作用和区域南北向应力场作用,发生区域变质形成沉积变质型硬锰矿矿层。     

Production of electrolytic manganese dioxide from purified solutions after the leaching of manganese-bearing slurry

The production of electrolytic manganese dioxide from purified solutions after the leaching of manganese-bearing slurry is investigated. The influence of the anodic current density on the electrolysis of manganese-bearing solutions is determined. The preliminary purification of manganese-bearing solutions before electrolysis is discussed. Purification of the solution at pH 6.5–7.0 ensures the maximum deposition of all the impurities that interfere with electrolysis: copper, zinc, nickel, cobalt, aluminum, phosphorus, arsenic, antimony, iron (III), and iron (II). After impurity deposition, the pulp is filtered; the hydrate deposits are washed; and the filtered liquid is sent for electrolysis to obtain electrolytic manganese dioxide. The samples of electrolytic manganese dioxide are studied by means of X-ray fluorescent analysis, X-ray phase analysis, and scanning electron microscopy. The results show that the electrolytic manganese dioxide obtained in the laboratory with anodic current density I_a = 150–200 A/m² meets all the requirements on a highly active product: the content of the basic component (MnO₂) in the experiments is 95.0–96.5 wt %.     

湖南奥陶纪天马山组中沉积型氧化锰矿的发现

在湖南常宁市茶潦村的天马山组下段地层中,首次发现有沉积氧化锰矿存在.矿区位于湘桂盆地南东边界,矿区含锰岩系由泥质岩及粉砂岩组成,矿体与围岩整合接触,该矿床沉积相属外陆棚、次深海陆缘斜坡相浊流沉积.断陷槽区域的离散拉张环境对锰成矿作用至关重要,茶潦凹陷带就发育于这种区域离散环境,且营造了相对缺氧的、滞流的安静环境.据此在湖南寻找同类型氧化锰矿的思路应顺层位找矿,顺含锰岩系找矿,并顺断陷槽找矿.     

Geochemical Characteristics of Sedimentary Manganese Deposit of Guichi, Anhui Province, China

The sedimentary manganese deposits occurring in Gufeng formation of the Permian in Guichi area, south Anhui Province, include manganese carbonate deposit formed by sedimentation, and manganese oxide deposit made by later oxidation. The total REE contents of these samples are relatively low ( ＜ 250 × 10-6), belonging to LREE-enriched type,showing LREE enrichment during the process of formation of Mn deposit, especially during Mn-oxidizing process. Three normalized REE patterns and SCNA-normalized trace elements spider diagrams of the Mn-bearing sequence rocks and ores in this area reflect their same origin of ore sources, which is similar to rock-forming and ore-forming conditions. The Mnforming materials primarily came from the continent with higher mature degree and single material source. The δEu and δCe negative anomaly and Ce anomaly ( ＜ - 0.1 ) manifest that Mn-bearing sequence of the Permian was mostly formed in marine basin and oxidative environment. The Sr and Ba anomaly, Sr/Ba and Co/Ni values reflect the Mn deposit environment was of deep water and high-salinity of marine facies. Although the Ce/La (mean 1.05), Y/Ho (25 ～ 41.5) and trace metals show a variety of correlations with Mn in the ten rock samples, which show multiple sources for the manganese, the analysis of geochemical characteristics indicate that the material sources of Mn deposit have been primarily terrestrially derived. Another source of the manganese probably comes from the seafloor volcanism in this area. Analysis of sedimentary features and geohistoric evolvement reveals that the maximum transgression of the Qixia Period, ore district is then in deep shelf-basin sedimentary setting and the Mn-bearing sequence is deposited.     

花垣民乐沉积型锰矿床成矿地质特征

湘西花垣民乐锰矿床属沉积型碳酸锰矿床,地层古构造、岩相古地理、古气候、古生物和地球化学等诸因素决定其成矿机理。文章对该矿床地质特征、成矿条件和成矿物质来源进行了论述。     

我国锰系材料发展概况

简要介绍了以电解金属锰、四氧化三锰、锰酸锂等为代表的锰系材料的生产、研究及其在高新技术领域的应用情况及发展趋势。     

广西大新锰矿区矿床地质特征及成因探讨

介绍了广西大新锰矿矿床的基本地质特征及其成因。热液沉积锰矿层产于浅海深水台沟沉积相中,矿物的同位素组成表明矿物质主要来自海底深部岩浆热液,陆源次之,矿体赋存上泥盘统五指山组地层中,矿体受海底热液作用控制,为沉积热液锰矿床。     

碳酸盐矿物相沉积特征及其应用前景

本文侧重对沉积锰矿的矿物组合、品位与锰碳酸盐的关系、锰矿物的时空分布规律、锰碳酸盐的形成环境及沉积锰矿形成的机理等一系列问题作了剖析，目的在于通过研究工作，寻找沉积锰矿特别是富矿能有一个新的突破。