Distribution of Selected Critical Elements in the Carboniferous Coal-bearing Series of the Upper Silesian and Lublin Coal Basins (Poland)

The distribution of selected critical elements in the sedimentary rocks of the Carboniferous coal-bearing series within the Polish Coal Basins is presented.Critical elements such as Be,Mg,Si,P,Sc,V,Co,Y,Nb,In,Sb,La,Ce,Hf,Ta,W,Bi were analysed using inductively-coupled plasma mass spectrometry(ICP/MS).Concentrations of elements such as Sb,Bi,In and,to a slightly lesser extent,Nb,as well as Sc,show average concentrations higher than those from the upper continental crust.The average concentrations of elements like Hf,Mg,P,Y,La,and Ce are slightly lower than in the upper continental crust.Other elements,such as Be,Co,Si,Ta,W and V have average concentrations that are similar,but slightly enriched or slightly depleted,relative to the upper continental crust.The research showed enrichment of some critical elements in the analysed samples,but not high enough that extraction would be economically viable.Statistical methods,which include correlation coefficients between elements and cluster analysis,reveal a strong positive correlation between elements like Be,Bi,Nb,Sc,Ta,W and V.Very high,almost total,positive correlation is also noted between La and Ce.     

云南易门安宁禄丰主要铁矿床述要

引言易门安宁禄丰三县,为云南中部产铁区域,土炉冶炼,采挖已久,惟关於矿产之价值,矿床之种类,作科学之研究者,至近年来,始有其人,最初有法人来克里者,曾考察易门铁矿,     

云南矿产概论

云南矿产向称丰富,中外报告,言之屡矣。自抗战军兴,增加後方生产,为当务之急,于是滇省之地下富源,遂益为国人所重视。经济部地质调查所,西南联大地质系,本省建设厅及经济委员会等先後派员,实地测勘,所得结果俱极重要,惜多散见於分刊物及简报中,尚无概括之论述,足资一般之参考     

编者言

“地质论评”在中国地质学会困苦的支持下,八年来幸未间断。这是我们的领导当局之苦心,与工作同人之努力,所收的效果。对于学会出版物,黄汲清,尹建猷,谢季骅,李赓阳,王斐轩,及帮助编印诸君,都尽了不少义务。他们求学之专,生活之苦,检讨之严,服务之热,都到了可敬佩的地步。出版     

马以思女士事略

马以思女士原籍四川成都,先祖以经营金矿,举家迁居於东北边陲,女士於民国八年十月廿五日生於黑龙江,天资聪慧,幼年习日文颇有成就,九一八事变後,父伯严公携眷内迁,     

南嶺何在

长江流域和东西江流域,除了在广西的东北角兴安附近,曾用人工勾通水系而外,可以说是两个完全独立的排水区域,这两个区域的干流,大致成东西向,而在这两个区域之间,也有断断续续的山脉,形成天然的界线,这些山脉或分水岭,普     

盐边县攀枝花倒马坎铁矿成因

攀枝花及倒马坎,位盐边县西南,踞金沙江北岸。攀枝花山势陡峻,距江边约三公里,倒马坎山小坡平,即濒江干。铁矿藏量颇丰,质亦良佳,且密迩永仁煤田,及盐边县属乌拉阿卡坭红果等煤区,洵可大量开采,西南钢铁事业,至有望焉。     

关于甘肃及青海境内之第三纪红色地层

一、绪言在甘肃及青海境内,包括祁连山南北,秦岭以北,并六盘山东西地带,第三纪红色地层,颇佔重要地位,惟迄今对其命名,时代,及分层等尚末能一致,兹就著者各处观察所得,并与前人所论比较论证,期能获得进一步之认识。     

悼刘莊

刘莊先生字伊璜,山东泰安县人,生於民国八年,双亲早世,赖祖叔抚育成人;颖悟非凡,沈静寡言,乐交游,重情感。十二岁就读泰安省立第三初级中学;十五岁考入山东省立济南高级中学,课馀之暇,喜习纲球,技术甚精。旋於民国廿五     

追悼刘辉泗先生

二十六年冬,余奉调入江西地质调查所工作;时赣北战事紧张,所址迁移萍乡安源镇之葛仙寺,下车伊始,即与刘君辉泗相遇於葛仙寺下之山坡,君方自赣南调查归来,畅谈野外所见,滔滔不绝。及相处日久,尤慕其禀牲真挚,待人诚坦,不     

威宁铜厂河玄武岩铜矿成矿地质特征及成因探讨

研究威宁铜厂河铜矿区玄武岩的岩石类型、常量元素、微量元素及稀土元素地球化学特征,探讨玄武岩铜矿的成矿地质背景、控矿因素、产出特征和成矿规律,系统总结了找矿标志.研究认为,本区玄武岩具大陆拉斑玄武岩特征,铜矿属火山同生热液成矿叠加埋藏变质作用改造形成的玄武岩铜矿.     

云南绿春杨家寨金多金属矿矿床特征及成矿规律

杨家寨金多金属矿位于西藏—三江造山系,兰坪—普洱双向弧后陆内盆地与绿春陆缘弧带结合部,矿体近矿围岩主要为下二叠统高井朝组安山质凝灰岩及安山岩,少部分为石英斑岩,矿体就位于与莫马洛断层（F4）成锐角度相交的次级构造、层间破碎带及层间剥离—滑脱构造带.成矿作用共分三个阶段：早二叠世晚期——矿源岩（层）形成阶段,燕山早期——矿床形成阶段;燕山晚期——矿床定位阶段.矿床类型为浅成低温热液构造—蚀变岩型多金属矿床.     

Fluid Inclusions and C,H, O,S, and Pb Isotopic Compositions of the Dabaoshan Cu Polymetallic Deposit,Northern Guangdong Province,South China

The Dabaoshan deposit in Northern Guangdong Province, South China, is a Cu–Mo–W–Pb–Zn polymetallic deposit, located in the southern part of the Qin–Hang porphyry–skarn Cu–Mo ore belt. The deposit mainly comprises porphyry Mo and stratiform skarn Cu ore deposits. The genesis of the Cu ore deposit has been ascribed to a typical skarn ore deposit formed by the metasomatism of Devonian carbonate rock layers or to a volcanic rock‐hosted massive sulfide deposit formed by marine exhalation. In this paper, we report on the homogenization temperatures and salinities of fluid inclusions and C, H, O, S, and Pb isotopic compositions of fluids and minerals in this deposit. Homogenization temperatures and salinities of fluid inclusions in garnet, diopside, quartz, and calcite provide information on the skarnification, mineralization, and postmineralization stages. The data show that ore‐forming fluids experienced a continuous transition from high temperatures and salinities to low temperatures and salinities over the entire period of mineralization. C, H, and O isotopic compositions indicate that ore‐forming fluids were derived mainly from magmatic water. O isotopic compositions indicate that ore‐forming fluids mingled with atmospheric water during the last stage of mineralization. Sulfur in the ore came mainly from deep magmatic sources. Pb isotopic compositions in the orebody show that almost all the lead in the ore was derived from magma with a crustal source. Combined geological, geophysical, and geochemical data were achieved before we proposed that the Dabaoshan porphyry–skarn Cu–Mo–W–Pb–Zn deposit, as one member of the Qin–Hang porphyry–skarn Cu–Mo ore belt, formed during the Jurassic subduction of the paleo‐Pacific plate beneath the Eurasian continent at quite low angle. NE‐ and EW‐trending structures controlled the emplacement of magmatic rocks in the South China region. In the mining area, the Xiangguanping Fault and its branches were the main conduits for magmatic crystallization and mineralization. The many subfaults, folds, and interlayer fracture zones on both sides of the main fault provided the requisite space for the ore and, together, were the controlling structures of the orebody.     

昆明东川一、四棵树铜矿成矿规律

落雪组是主要含矿层位。底部过渡层以斑铜矿、黄铜矿为主,中部含较多铜矿结核,顶部发育网脉状铜矿。具层控性,铜矿的规模与地层厚度有一定的关系。     

云南永善县茂林铜矿铜元素赋存状态研究

云南永善县茂林铜矿属于玄武岩型铜矿,品位较低.通过电子探针、化学多元素分析以及光、薄片镜下观察等研究,对矿石的结构、构造,铜矿物在矿石中的赋存状态都有了清楚认识.研究结果显示约68％的铜以独立矿物的形式赋存在赤铜矿和自然铜中,另有32％的铜则以类质同像的形式赋存在绿泥石中.     

沂沭断裂带中段金矿特征及找矿方向研究

沂沭断裂带是中国东部著名的深大断裂,由4条大断裂组成,沂水汤头断裂是其4条主干断裂之一。近几年来,在该断裂上发现了龙泉站、牛家小河、南小尧等金矿,使沂沭断裂带金矿找矿取得了突破。该文在研究金矿地质背景、矿床地质特征、矿床成因的基础上,归纳总结了金矿类型、成矿规律,认为沂沭断裂带不但导矿,而且储矿,提出了新的找矿方向,为沂沭断裂带乃至整个郯庐断裂带进一步开展金矿找矿工作提供了依据。     

西藏墨竹工卡地区甲玛铜多金属矿床矽卡岩矿物学特征及其地质意义

为研究西藏甲玛铜多金属矿床中矽卡岩的矿物学特征,进一步确定矿床成因类型,利用电子探针测试和镜下鉴定手段对矽卡岩矿物中的石榴子石、辉石、硅灰石等矿物成分进行了分析。测试结果表明,矽卡岩中石榴子石以钙铁榴石-钙铝榴石为主,辉石以透辉石为主,甲玛矿床矽卡岩属于交代矽卡岩中典型的钙矽卡岩。结合前人对矿区矽卡岩、围岩和花岗岩类的岩石地球化学、矿床成矿年代学等的研究,进一步证实甲玛铜多金属矿床系矿区花岗岩类岩浆交代大理岩形成的典型矽卡岩型矿床。     

云南永胜宝坪浅源热液改造型铜矿地质及成因

宝坪铜矿赋存于三叠系下统腊美组中。矿体呈似层状,少量脉状,严格受北北西-北西向构造控制。矿床成因类型属浅源热液改造型铜矿床。     

云南金平长安金矿断裂控矿作用浅析

长安金矿矿体呈似层状、透镜状产于NE陡倾F6断层破碎带的东亚带砂泥质构造岩中,成矿期发生近EW向断裂的构造叠加,成矿之后又遭受到近EW向小断裂的破坏.F6断层破碎带西亚带具导矿作用,东亚带起到容矿的作用,成矿期叠加的EW向断裂（F7、F8、F9等）兼具导矿和容矿作用,侵入于F6断裂带中的细晶正长岩、煌斑岩、辉绿岩等岩浆活动所带来的成矿流体促使矿质富集,形成工业矿体,成矿期后近EW向断裂（F10-1、F10-2）和NNW、NE向小断裂（f）为破矿构造.据此把长安金矿断裂构造演化和成矿初步分为主控矿断裂成矿、叠加断裂成矿和后期断裂破矿三个演化阶段.     

西双版纳国防铁矿控矿条件及矿体分布规律

铁矿体赋存于中元古界大勐龙群疆峰旋回第二、四段。含矿岩石为变中基性熔岩、角闪(阳起)斜长变粒岩、透辉钠长(斜长)变粒岩,分为上(Ⅰ)和下(Ⅱ)矿层。上矿层不稳定,下矿层由4个矿体组成复式矿。铁质就地运移、聚集、变质,典型的受变质火山汽液磁铁矿床。