山东省沂水宿山钛铁矿矿床地质特征

山东省沂水宿山钛铁矿属于岩浆结晶分异矿床。含矿岩石赋存于古元古代早期红门岩套三官寨中粗粒角闪辉长岩中。矿区内共圈定钛铁矿矿体1个,矿体长1 665m,宽4.01～77.14m,矿体单样品TiO2含量一般为5.00%～9.00%,平均6.66%。矿石中TiO2含量与TFe含量变化呈正相关关系。矿体经风化淋滤后,多发生褐铁矿、钛铁矿化现象,使矿体地表露头多呈红褐色,为其重要找矿标志。     

山东沂水县常庄钛铁矿地质特征及成因探讨

沂水县常庄钛铁矿床产于中细粒含钛磁铁矿辉石角闪石岩中,该岩体既是成矿母岩又是赋矿围岩。矿体长1 800 m,平均宽75 m,控制斜深344 m,平均品位TiO28.85%,品位变化系数为104%,TFe+TiO2平均品位28.24%,品位变化系数为102%。属品位变化较不均匀的矿体。该矿床具有矿体规模大,形态简单,易于开采之特点。通过对矿床地质特征的研究,认为该矿床属基性岩浆分异型钛铁矿床,其成矿时代为古元古代。     

山东省沂水县下儒林钛铁矿矿床地质特征

下儒林钛铁矿位于沂沭断裂带内汞丹山凸起的东部边缘,浮来山白粉子断裂的西侧。含矿岩石(矿化体)为侵入于新太古代泰山岩群中的新太古代晚期含钛磁铁矿角闪石岩,其呈透镜状或带状发育于泰山岩群中或被捕虏(残留)于古元古代吕梁期傲徕山弱片麻状中粗粒二长花岗岩内,其产状与新太古代变质地层基本一致。矿区内圈定矿体5个,矿体长240~1000m,宽14~140m。矿石TFe含量一般为15%~16%,最高为21.84%,矿床平均为15.55%;TiO2含量一般为5%~8%,最高为10.13%,矿床平均为6.54%。矿石中TiO2与TFe含量变化呈正相关关系。     

沂水县探明超大型铁钛矿

近日,山东兴盛矿业股份有限公司委托山东省第八地质矿产勘查院运用找矿新理论、新方法在沂水县诸葛镇上峪地区探明一处超大型铁钛矿,储量规模在同类型矿床中居山东省之首。共探明铁、钛矿石资源储量46289．4万t。经专家论证,具有极大开发利用价值。沂水县上峪钛铁矿区位于鲁西地块泰山一沂山隆起沂山凸起南缘,矿床赋存于中元古代三官寨单元角闪辉长岩中,矿体受角闪辉长岩岩体所控制。共圈出铁钛矿体2个,Ⅰ号矿体分布在山前官庄一大峪村北,地表出露长达3280m,倾斜延深760m。     

沂水县南仉林钛、铁矿地质特征

沂水县杨庄南仉林钛、铁矿位于沂沭断裂带汞丹山凸起的东南部,矿体为含磁铁矿钛铁矿角闪石岩,围岩为新太古代晚期第三阶段弱片麻状中粗粒二长花岗岩。矿区圈定钛、铁矿体1个,呈脉状产出,较规则,总长度约1200m,宽25～67m,平均40.3m,延深大于200m。矿体平均品位TFe20.13%,Ti028.86%。属晚期岩浆分异型钛、铁矿床。     

山东省沂水县天桥官庄钛铁矿矿床特征

天桥官庄钛铁矿属于岩浆结晶分异矿床,含矿岩石赋存于新太古代晚期红门序列三官寨单元角闪辉长岩中。矿区内共圈定钛铁矿矿体1个,矿体出露长约280 m,宽7~26 m。矿体赋存标高+190~0 m,控制埋深约190 m,最大真厚度42.69 m,最小真厚度4.64 m,平均真厚度14.99 m,属厚度较稳定的矿体。矿石m Fe含量7.05%~21.78%,平均品位13.33%;Ti O2含量2.48%~6.30%,平均品位4.33%;(m Fe+Ti O2)含量11.13%~28.05%,平均品位17.66%。角闪辉长岩在地表风化形成灰黑色土壤,与花岗岩风化形成的淡红色土壤有明显的区别,为其重要的找矿标志。     

对山西省交口县庞子矿区铝土矿资源的分析

山西省交口县庞子窊铝土矿区位于交口县城北60°、直距约35km处的庞子窊村一带,矿区交通比较便利。矿区出露地层为奥陶系中统峰峰组(O2f)、石炭系中统本溪组(C2b)、新近系上新统(N2)、第四系中上更新统(Q3)和第四系全新统(Q4)。石炭系中统本溪组(C2b)地层是本区的铝土矿的含矿层,本区矿体有3个矿段,编号为Ⅰ、Ⅱ、Ⅲ,其中Ⅱ矿段最大,南北长约1200m,东西宽约350-665m,Ⅲ矿段最小。矿区矿石类型按照成因,可分为沉积型和风化壳型两类。本区铝土矿资源量649.17万吨。     

济南市长清区界首蛇纹岩矿地质特征及开发利用效益预测

界首蛇纹岩矿为山东省较早开发的矿区,多用于提取钙镁磷肥,其地质条件较好,储量可观。区内矿脉断续出露长2400m,宽30~70m,延深100~200m,倾角60°~80°左右,矿体多出露地表,适于露天开采。1988年在蛇纹岩岩体中发现达到玉石标准的包裹体,并综合开发利用,矿山得以增产增值。目前属于村办开矿,开采不规范,导致乱采滥挖,至今矿山停采,并封矿。     

山东省东阿县单庄铁矿床地质特征及找矿前景

近年,山东东阿单庄地区铁矿找矿取得重大突破,探求铁矿石资源量约3.5亿t。山东东阿单庄铁矿为汶上-东平铁矿带的北延部分,矿区可分为柳林屯和前翟坊2个矿段,矿体赋存于泰山岩群山草峪组地层中,呈NW向带状展布,累计发现大小磁铁矿体27个,包括主要矿体7个,倾向SW,倾角53°~67°,矿体一般向深部有变陡、变富、变厚的趋势,矿体平均真厚度8.49 m,TFe平均品位28.38%,m Fe平均品位23.21%。通过对单庄地区铁矿地质特征、地球物理特征等综合研究,大致查明了单庄铁矿床矿体的形态、产状、规模、分布、厚度、矿石特征等。根据矿床成因类型,结合铁矿床的具体特点,认为该区铁矿找矿标志有地层、地球物理、矿体的赋存特征等3个主要标志,矿区的深部和外围成矿潜力巨大。     

陕西省旬阳县红花坪锌矿床地质地球化学特征及成因探讨

通过对陕西省旬阳县红花坪锌矿床的地质矿产勘查,已圈出I1锌矿体和一些单工程控制的规模较小的铅锌矿化体。已获得锌资源量7.43×104t;工程控制矿体长990m,斜深393m,矿体厚0.44～11.35m,平均厚2.65m,Zn含量0.96%～23.85%,平均6.14%;Pb含量0.01%～1.28%,平均0.13%。通过对红花坪锌矿床的矿体及矿物岩石特征、矿床地质地球化学特征、成矿年龄及成矿温度压力特征等进行了分析和讨论,认为该矿床为热液改造型矿床。     

中国钼金属矿床特征及资源潜力分析

钼是重要的战略性矿产资源。我国的钼矿床类型多样,主要分为内生和外生等5种类型,其中斑岩型矿床是最重要的矿床类型。钼矿床分布具有区域分带的特点,这种特点与其成矿动力学背景密切相关。在今后钼矿床的勘查找矿工作中,把加强已有矿山的深部和外围找矿与开展非传统地区的勘查找矿相结合,重视内生矿床尤其是斑岩型矿床的成矿潜力,以实现钼矿床的找矿新突破。     

中国钼金属矿床特征及资源潜力分析

钼是重要的战略性矿产资源。我国的钼矿床类型多样,主要分为内生和外生等5种类型,其中斑岩型矿床是最重要的矿床类型。钼矿床分布具有区域分带的特点,这种特点与其成矿动力学背景密切相关。在今后钼矿床的勘查找矿工作中,把加强已有矿山的深部和外围找矿与开展非传统地区的勘查找矿相结合,重视内生矿床尤其是斑岩型矿床的成矿潜力,以实现钼矿床的找矿新突破。     

陕西凤县铅洞山铅锌矿床的矿石组构成因意义的分析

本矿床的矿石组构类型可概括为四类:同生沉积组构、成岩组构、后生叠加组构和后期变形改造组构。详细研究表明,以同生沉积和成岩作用形成的组构为主,如浸染状、层纹状、条带状、角砾状构造和莓球状、半自形细粒状结构等,其中部分受到后期构造变形改造、但后生成矿组构极为少见。矿床的地球化学特征研究提供了成矿物质来源于深部地层的信息。因此,从矿石组构特征及成矿物质来源两个方面分析,认为本矿床为海底喷流沉积—成岩弱改造型层控矿床.     

Geology and fluid inclusion characteristics of Qilishan gold deposit in Zhaoyuan of Shandong,China

The Qilishan gold deposit is located in the southern Zhaolai gold ore belt in the northwestern Jiaodong region.A total of seven gold ore bodies have been found in the mining area.Linglong gneissic biotite granite and the NE trending Lingbei fracture control the output and distribution of the gold deposit.The ore bodies with veined or irregular shape occur in the structural alteration zone.The ore bodies of different sizes are NE trending and SE dipping.The constituent minerals of the ores mainly include pyrite,chalcopyrite,native gold,electrum,argentite,matildite,hematite,quartz and calcite.The ores are characterized by metasomatic dissolution structure,as well as veined and brecciated structures.The ore-forming process is divided into four stages,namely quartz-,pyrite-,polymetallic-and carbonate stages.Study on fluid inclusion shows that the deposit is composed of gas-liquid two-phase inclusions （Ⅰ） and three-phase inclusions containing CO2 （Ⅱ）,and that the former dominates.The homogenization temperature is 259.6℃-373.7℃ ; the salinity of three-phase inclusions containing CO2is 5.77%-9.84% （NaCl） ; the salinity of gas-liquid two-phase inclusions is 6.58%-8.54% （NaCl） ; and the estimated ore-forming pressure is 55.2-82.2 MPa.According to the nonlinear relationship between the depth and pressure of the fluid in the fracture zone,the ore-forming depth of the Qilishan gold deposit is calculated as 5.95-7.14 km.It is preliminarily determined that the deposit is a mesophilic and hypothermal gold deposit.     

义县金矿成困矿物学研究

义县金矿是我国新发现的一个金矿床,矿床规模较大,品位高,矿石成分简单,易采易选。矿床受地层、断裂、岩脉活动等因素影响,并有多源特证。     

建昌县大石沟金矿床特征及矿床模式

建昌县大石沟金矿床与南大线金矿床相连,二者实为一个金矿床。矿床受控于大青山火山机构,在火山机构的南侧接触带及其附近的中侏罗统髫髻山组安山质火山岩中热液蚀变发育。蚀变有两种类型,即面性围岩蚀变和线性围岩蚀变,面性蚀变岩受接触带控制,线性蚀变岩受断裂构造或劈理（带）控制,前者控制了金矿床或矿化带,后者控制了金矿脉（带）,这种控矿断裂或劈理（带）是大青山火山机构破火山口塌陷过程中形成的裂隙系统。依据矿床产出的地质背景、构造环境、矿床地质特征、地球化学特征等建立了矿床模式,以利于今后的成矿预测和资源评价。     

Genesis of Gold- Silver Deposits in Qingchengzi Ore Field

The gold - silver complex ore field of Qingchengzi is located in Liaohe group of Liaodong rift. The gold - silver ore bodies mainly lie in Dashiqiao group and Gaixian group, which provides ore - forming materials for the mineralization. For taking place multi - period and multi - stage magmatic activities, the ore - forming materials in the formation had had dynamothermal metamorphism for a long time and enriched and formed ore bodies after magmatism in Indo- Chinese and Yanshan epoch. The ore bodies are controlled by stratigraphic formation and stored in the interformational faults and schistosity belts. Silicalite is the most important indicator for searching them. Although the Pb - Zn and the gold - silver deposits are the same series of mineralized products, their positions are different, resulting from the differences of elements nature and mineralized conditions. The gold silver deposits belong to strata - bound and hysterogenetic mesothermal - epithermal deposit.     

Genesis of Gold-Silver Deposits in Qingchengzi Ore Field

The Qingchengzi ore field that is located inLiaohe group of Liaodong rift. It is an importantnonferrous metal and precious metal baie. Manygold -- silver deposits have been found in recentyears, such as Taoyuan, Gaojiaj>uzi, Xiaotongjiapuzi.For searching …     

Mineralization enrichment regularity of gold deposit in Shangzhuang, northwestern Jiaodong

Shangzhuang gold deposit located in the Wangershan fault zone of northwestern Jiaodong is of meso-hypogenic altered rock type. The ore bodies occur at the hanging wall and footwall of Wangershan fault in vein or irregular shapes with the NE strike, NW trend, 30°-60° in dip and the lateral trending of SW. The ores are composed of pyrite, quartz, sericite, bismuthinite, native gold, bismuth sulfosalt minerals, chalcopyrite, etc., shown as brecciated structure and vein structure with metasomatic dissolution textures. The wall rock alteration is mainly described as phyllic alteration and silicification. The mineralization of this deposit is controlled by structure and altered rocks. The ore-controlling fault structures of this deposit is Wangershan fault, of which the intersection of major fault and secondary fault is the main ore-bearing position of this gold deposit, and the larger arc curved position is a favorable part for ore body occurrence. On the plane, the ore body is shown as equidistant pinch-out reproduction.     

山东莱芜地区牛泉铁矿成矿地质特征及成因探讨

牛泉铁矿位于鲁西地块莱芜铁矿集区内,是一个较为典型的“邯邢式”矽卡岩铁矿.前人对莱芜铁矿集区张家洼铁矿研究报道较多,但鲜有人对其西南5 km处的牛泉铁矿进行研究.本文在前人勘查工作基础上介绍了牛泉铁矿成矿地质背景,从地层、岩浆岩、矿体特征、矿石特征、围岩蚀变等方面详细介绍了矿床地质特征、划分了成矿期次、初步探讨了成矿时...