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1.
河南水洞岭铜多金属矿床地球化学异常特征及找矿标志 总被引：3，自引：0，他引：3
水洞岭铜多金属矿床的岩石和土壤地球化学试验研究,表明岩石和土壤中Ｃｕ、Ｐｂ、Ｚｎ、Ａｓ、Ｓｂ、Ｈｇ、Ｃｄ、Ｂｉ、Ｍｏ元素异常清晰,含矿岩系地球化学演化与元素组合变化的一致性,提出Ｃｕ、Ｐｂ、Ｚｎ、Ａｓ、Ｓｂ、Ｈｇ、Ｃｄ、Ｂｉ、Ｍｏ元素可以作为指示元素,并建立了矿床的岩石、土壤地球化学异常概念模式。 相似文献
2.
陕西凤县八方山多金属矿床成矿成晕模式 总被引：5，自引：0，他引：5
方维萱 《有色金属矿产与勘查》1997,6(3):167-171
方山多金属矿床产于中泥盆统星红铺组，古道岭组。指示元素有Ｃｕ、Ｐｂ、Ｚｎ、Ａｇ、Ｃｄ、Ｈｇ、Ａｓ、Ｓｂ、Ａｕ、Ｂａ、Ｓｒ、Ｂ等，原生异常的轴向分带序列（从上到下）：Ｚｎ－Ｈｇ－Ｐｂ－Ａｇ－Ｃｕ１－Ｂａ－Ｓｒ－Ｓｂ－Ａｓ－Ｃｕ２、Ｎｉ、Ｃｏ、Ａｕ，具有明显多建造晕的特点。八方山多金属矿床是由海底喷流（汽）同生沉积－叠加、再造作用形成的。 相似文献
3.
白银厂矿田折腰山海相火山岩型铜矿床地球化学异常特征 总被引：5，自引：1，他引：4
论述了白银厂矿田折腰山铜矿床的地质,地球化学特征,认为该矿床的主要指示元素是Ｃｕ,Ａｇ,Ａｓ,Ｓｂ,Ｈｇ,Ｐｂ,Ｚｎ,Ａｕ,Ｃｄ,Ｂａ,进而讨论了这些元素在区域,矿床的异常特征以及垂直分带规律,最后总结出矿床的地球化学异常模式。 相似文献
4.
西太平洋冲绳海槽烟囱硫化物矿床矿石化学特征与分带型式 总被引：12，自引：0，他引：12
西太平洋冲绳海槽烟囱式硫化物矿床分布于琉球弧后扩张盆地、产于尹是名洼陷盆地（深１４００ｍ），其特征与日本黑矿类似。硫化物矿石及烟囱主要有３种化学类型：Ｐｂ－Ｚｎ－Ｂａ型、Ｚｎ－Ｐｂ型和Ｃｕ－Ｚｎ型，三者分别代表温度不断升高的热液体系的早、中、晚３个成矿阶段产物，其中，Ｐｂ－Ｚｎ－Ｂａ矿石及烟囱形成于高ｆｏ２环境和高流速、低温、富Ｐｂ、Ｚｎ、Ｂａ热液体系，Ｃｕ－Ｚｎ矿石及烟囱形成于低流速、高温、富Ｃｕ热液体系，Ｚｎ－Ｐｂ矿石则介于其间。硫化物烟囱显示明显的矿物－化学分带。在Ｐｂ－Ｚｎ－Ｂａ矿石（烟囱），Ｚｎ、Ｃｄ集中于烟囱中央，Ｂａ、Ｆｅ、Ａｓ、Ｓｂ、Ａｇ、Ｐｂ集中于烟囱外带，Ｃｕ则富集于烟囱中外部。在Ｃｕ－Ｚｎ矿石，Ａｓ、Ｓｂ、Ｆｅ、Ａｇ、Ａｕ仍富集于烟囱外带，Ｃｕ、Ｚｎ、Ｐｂ则在烟囱中央富集。依此元素化学分带型式，建立了古代黑矿硫化物矿体分带与硫化物堆积模式。 相似文献
5.
五台山—恒山绿岩带Ａｕ、Ａｇ、Ｃｕ矿床可分为二大类型：（１）再生型金银铜矿，产在包括岩浆岩在内的各类岩石断裂构造中，与岩浆期后热液有关；（２）变生型金银铜矿，产于各类变质岩中，具有层控特征（即绿岩型金矿）。在地球化学特征上，再生型矿床与变生型矿床相比，矿体及围岩中Ｍｏ、Ａｇ、Ｐｂ、Ｚｎ、Ｃｄ等成矿及伴生元素明显富集；Ｋ２Ｏ、Ｒｂ、Ｓｒ、Ｂａ、Ｔｈ、Ｕ也明显富集，是后期岩浆热液作用的结果；Ｈｇ、Ｆ的明显富集则与后期构造活动有关；Ｚｎ／Ｃｄ比值较低，说明受到后期岩浆侵入影响；Ｔｈ／Ｕ比值低，可能指示富钙的酸性岩环境。再生型Ａｕ矿化的元素组合为Ｃｄ、Ａｓ、Ｎｉ、Ａｇ、Ｓｂ、Ａｕ、Ｈｇ（Ｂｉ），再生型Ａｇ矿化的元素组合为Ａｓ、Ｓｂ、Ａｇ、Ｃｄ、Ｃｕ、Ｎｉ（Ｍｏ、Ｐｂ、Ｚｎ、Ｂｉ），变生型Ａｕ矿化的元素组合较简单，只为Ａｕ、Ｈｇ、Ａｓ或Ａｕ、Ｃｕ。上述地球化学特征不仅可以有效地区分矿化类型，而且可以作为地球化学找矿和评价的指标 相似文献
6.
7.
内蒙赤峰安家营子金矿微量元素特征 总被引：1，自引：0，他引：1
通过对未蚀变岩石、近矿蚀变围岩及矿区内产出的黄铁矿中微量元素的分析对比，指出本区最佳指示元素是Ａｕ、Ｃｕ、Ｂｉ、Ｐｂ、Ｍｏ、Ａｓ；矿区产出的黄铁矿都富含Ａｓ、Ｓｂ、Ｂｉ，但富金黄铁矿中还富含Ｃｕ、Ｚｎ、Ｐｂ；成矿温度影响着含金黄铁矿中微量元素含量，成矿温度高的矿床中黄铁矿之Ａｓ、Ｓｂ、Ｈｇ、Ｚｎ含量低，而更富金 相似文献
8.
原油中有害微量元素是指威害人身健康或对环境造成污染的元素。通过对我国松辽盆地原油系统测试的结果为 :原油中含有 30多种金属及多种非金属元素 ,在这些元素中含有害微量元素Ａｓ ,Ｃｄ ,Ｃｒ ,Ｈｇ ,Ｎｉ,Ｐｂ ,Ｓｅ ,Ｕ等 ,他们的质量分数 (克拉克值 )超过沉积层及中国陆壳 2 3个数量级 ,已经构成异常。其中Ｃｄ ,Ｈｇ ,Ｐｂ ,Ｓｅ等为有毒元素 ,Ａｓ ,Ｃｄ ,Ｃｒ ,Ｎｉ,Ｐｂ等为致癌元素。所以深入开展原油中有害微量元素研究不仅在油气预测方面 ,而且在油污染方面都具有重大理论和实际意义。本文简要概括了该方面的研究现状 ,并进一… 相似文献
9.
煤中砷,氟,汞,铅,镉在灰化过程中的逸散规律 总被引：21，自引：3，他引：21
本文利用现代分析测试和实验模拟手段，时煤中部分有害微量元素：Ａｓ、Ｆ、Ｈｇ、Ｐｂ、Ｃｄ在燃煤过程中的逸散规律进行了探讨。发现在煤炭高温灰化过程中，Ａｓ主要赋存于灰化残渣中，损失率仅为１０％左右，Ｐｂ、Ｃｄ约５０％赋存于灰化残渣中，损失率为５０％，Ｆ、Ｈｇ则几乎全部以气态形式随烟尘进入大气，损失率分别为９８％和１００％。对灰化过程中逸散规律不同的有害元素应分别采取不同的环保对策。 相似文献
10.
太白维山大型银矿床地质地球化学特征 总被引：1，自引：0，他引：1
太白维山大型银矿床为典型的中低温火山－次火山隐爆角砾岩型矿床，受岩性和断裂构造控制明显，矿体的产出部位和矿石品级与隐爆角砾岩关系密切。本文通过对基岩和１：２０万水系沉积物资料的分析与处理，得出基岩中主成矿元素组合为Ａｇ－Ｃｕ－Ｐｂ－Ａｓ－Ｓｂ－Ｚｎ，水系沉积物中主成矿元素组合为Ａｇ－Ｐｂ－Ｚｎ－Ｃｄ－Ｍｎ－Ｈｇ的结论，同时指出Ｐｂ可作为此矿床最重要的间接指示元素，而主成矿元素中各单元素异常浓集中心对银矿床的产出部位有很好的指示作用，为找矿的重要指标。 相似文献
11.
安徽二叠纪龙潭组煤中潜在毒害元素分布的因子分析研究 总被引：1，自引：0，他引：1
运用因子分析法对安徽二叠纪龙潭组煤层中S、Fe、As、CA、Se、Hg、Ti和Zn等的分布规律进行了研究,研究了这些潜在毒害元素的相关关系,并结合元素地球化学知识给出了这些元素在煤中赋存状态的信息。结果表明:煤层中Pb以方铅矿形式存在于煤中;As、Hg、Sb主要赋存于次生黄铁矿中;Zn和Se主要赋存于闪锌矿中;从元素地球化学性质上讲,Cd应赋存于闪锌矿中,但由于其在煤中的含量较低,造成分析数据的误差较大,从而掩盖了它与Zn之间的相关关系;Ti的赋存状态较为复杂。 相似文献
12.
Gülbin Gürdal 《International Journal of Coal Geology》2011,87(2):157-173
This study presents the concentrations and modes of occurrence of trace elements in 81 coal samples from the Çan basin of northwestern Turkey. The concentration of trace elements in coal were determined by inductively coupled plasma-mass spectrometry and inductively coupled plasma-atomic emission spectrometry. Additionally, traditional coal parameters were studied by proximate, ultimate, X-ray diffraction, and petrographic analyses. Twenty trace elements, including As, B, Ba, Be, Cd, Cu, Co, F, Hg, Mo, Ni, Pb, Sb, Se Sn, Th, Tl, U, V, and Zn, receive much attention due to their related environmental and human health concerns. The Çan coals investigated in this study are lignite to sub-bituminous coal, with a broad range of ash yields and sulphur contents. The trace element concentrations show variety within the coal seams in the basin, and the affinities vary among locations. The concentrations of B, Ba, Be, Cd, Cu, Co, F, Hg, Mo, Ni, Pb, Sb, Se, Sn, Tl, and Zn in Çan coals are within the Swaine's worldwide concentration range, with the exception of As, Th, U, and V. On the other hand, compared with world coals, the Çan basin coals have higher contents of As, B, Cu, Co, Mo, Pb, Th, U, V, and Zn. Based on statistical analyses, most of the trace elements, except for U, show an affinity to ash yield. Elements including As, Cd, Hg, Se, Cu, Mo, Ni, and Zn, show a possible association with pyrite; however, the elements Se, B, and Mo can be have both organic and inorganic associations. 相似文献
13.
The mobility of 10 potentially toxic trace elements (PTTE), As, Cd, Cr, Cu, Hg, Ni, Pb, Se, Tl, and Zn from 32 coals of the
Longtan Group formed in Permian Period in Guizhou Province, China was investigated using sequential extraction procedures.
The results demonstrate that PTTEs such as Hg, As, Se, Cd, Cu, and Pb have the highest mobility at surface conditions, and
the average extractable fractions of them are 86%, 95%, 79%, 76%, 69%, and 69% of the total amount in coal, respectively.
The elements in coal with the lowest leachability include Tl, Cr, and Ni, and the average extractable fractions of them are
30%, 20%, and 29% of the total amount in coal respectively. Zinc has an intermediate behavior, and the average leachable fraction
of it accounts for 46% of the total amount in coal. The results demonstrate that mobility of PTTE in coal depends on the speciation
of these elements. The elements associated with sulfates, carbonates, sulfides and some organic matter in coal show the highest
extraction rates during the weathering process, while elements with silicate affinities are inert at surface conditions.
Received: 29 December 1998 · Accepted: 10 November 1998 相似文献
14.
《International Journal of Coal Geology》2007,69(3):179-191
The concentration, distribution and modes of occurrence of trace elements in thirty coals, four floors and two roofs from Northern China were studied. The samples were collected from the major coalfields of Shanxi Province, Shaanxi Province, Inner Mongolian Autonomous Region, and Ningxia Hui Autonomous Region. The concentrations of seventeen potential hazardous trace elements, including Hg, As, Se, Pb, Cd, Br, Ni, Cr, Co, Mo, Mn, Be, Sb, Th, V, U, Zn, and five major elements P, Na, Fe, Al, and Ca in coals were determined.Compared with average concentration of trace elements in Chinese coal, the coals from Northern China contain a higher concentration of Hg, Se, Cd, Mn, and Zn. They may be harmful to the environment in the process of combustion and utilization. Vertical variations of trace elements in three coal seams indicated the distributions of most elements in coal seam are heterogeneous. Based on statistical analyses, trace elements including Mo, Cr, Se, Th, Pb, Sb, V, Be and major elements including Al, P shows an affinity to ash content. In contrast, Br is generally associated with organic matter. Elements As, Ni, Be, Mo, and Fe appear to be associated with pyrite. The concentrations of trace elements weakly correlate either to coal rank or to maceral compositions. 相似文献
15.
Modes of Occurrence and Cleaning Potential of Trace Elements in Coals from the Northern Ordos Basin and Shanxi Province, China 总被引：1，自引：1，他引：0
WANG Wenfeng QIN Yong JIANG Bo FU XuehaiCollege of Mineral Resources China University of Mining Technology Xuzhou Jiangsu 《《地质学报》英文版》2004,78(4):960-969
Based on the analyses of 43 elements in 16 samples of the raw coal and feed coal collected from the northern Ordos basin and Shanxi Province, the modes of occurrence of these elements were studied using the method of cluster analysis and factor analysis, and the cleaning potential of the hazardous elements relatively enriched in the coals was discussed by analyzing six samples of the cleaned coal from the coal-washing plants and coal cleaning simulation experiments. The results shows that the elements Br and Ba show a strong affinity to the organic matter, Cs, Cd, Pb, Zn and Hg partly to the organic matter, and the other trace elements are mainly associated with the mineral matter. Cs, Mo, P, Pb, Zn and S have positive correlations with the two principal factors, reflecting the complexity of their modes of occurrence. Some elements that were thought to show a faint relationship (Be with S and Sb with carbonates) in other rocks are found to have a strong interrelation in the coals. Clay minerals (mainly k 相似文献
16.
Geochemistry and Modes of Occurrence of Hazardous Trace Elements in the No. 11 Coal Seam, Antaibao Surface Mine, Shanxi Province 总被引：1，自引：0，他引：1 
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下载免费PDF全文 SONG Dangyu QIN Yong WANG Wenfeng ZHANG Junying ZHENG Chuguang 《《地质学报》英文版》2007,81(1):135-140
Concentrations of seventeen hazardous trace elements including As, Pb, Hg, Se, Cd, Cr, Co, Mo, Mn, Ni, U, V, Th, Be, Sb, Br and Zn in the No.ll coal seam, Antaibao surface mine, Shanxi Province were determined using Instrumental Neutron Activation Analysis （INAA）, Inductively Coupled Plasma Atomic Emission Spectrometry （ICP-AES）, Cold-Vapor Atomic Absorption Spectrometry （CV-AAS） and Graphite Furnace Atomic Absorption Spectrometry （GF-AAS）. Comparisons with average concentrations of trace elements in Chinese coal show that the concentrations of Hg and Cd in the No. 11 coal seam, Antaibao surface mine are much higher. They may be harmful to the environment in the process of utilization. The variations of the trace elements contents and pyritic suffur in vertical section indicated that： （a） the concentrations of As, Pb, Mn, and pyritic sulfur decrease from roof to floor; （b） the concentrations of Cr, Zn and Mo are higher in roof, floor and lower in coal seam; （c） the concentration of Br, Sb, and Hg are higher in coal seam and lower in roof and floor; （d） the concentrations of Mo, V, Th and AI vary consistently with the ash yield. Cluster analysis of trace elements, pyritic sulfur, ash yield and major elements, such as AI, Fe, P, Ca shows that： （a） pyritic sulfur, Fe, As, Mn, Ni, Be are closely associated and reflect the influence of pyrite; （b） Mo, Se, Pb, Cr, Th, Co, Ca and A! are related to clay mineral, which is the main source of ash; （c） U, Zn, V, Na, P maybe controlled by phosphate or halite; （d） Hg, Br, Sb and Cd may be mainly organic-associated elements which fall outside the three main groups. The concentration distribution characteristics of trace elements in coal seam and the cluster analysis of major and trace elements showed that the contents of trace elements in the No. 11 coal seam, Antaibao surface mine, are mainly controlled by detrital input and migration from roof and floor. 相似文献
17.
Concentration and distribution of elements in Late Permian coals from western Guizhou Province,China
《International Journal of Coal Geology》2005,61(1-2):119-137
With the aim of better understanding geochemistry of coal, 71 Late Permian whole-seam coal channel samples from western Guizhou Province, Southwest China were studied and 57 elements in them were determined. The contents of Al, Ca, Co, Cr, Cu, Fe, Ga, Hf, K, Li, Mn, Mo, Nb, Ni, Sn, Ta, Ti, Th, U, V, Zr, and REEs in the Late Permian coals from western Guizhou Province are higher than the arithmetic means for the corresponding elements in the US coals, whereas As, Ba, Br, F, Hg, P, Se, and Tl are lower. Compared to common Chinese coals, the contents of Co, Cr, Cu, Ga, Hf, Li, Mn, Mo, Ni, Sc, Sn, Ti, U, V, Zn, and Zr in western Guizhou coals are higher, and As, F, Hg, Rb, Sb, Tl, and W are lower. Five groups of elements may be classified according to their mode of occurrence in coal: The first two, Group A, Tm–Yb–Lu–Y–Er–Ho–Dy–Tb–Ce–La–Nd–Pr–Gd–Sm, and Group B, As–Sr–K–Rb–Ba–F–Ash–Si–Sn–Ga–Hf–Al–Ta–Zr–Be–Th–Na, have high positive correlation coefficients with ash yield and they show mainly inorganic affinity. Some elements from Group B, such as Ba, Be, Ga, Hf, and Th, are also characterized by significant aluminosilicate affinity. In addition, arsenic also exhibits high sulfide affinity (rS–Fe>0.5). The elements, which have negative or lower positive correlation coefficients with ash yield (with exceptions of Bi, Cs, Nb, Mn, Se, and Ti), are grouped in other four associations: Group C, Cr–V–Mo–U–Cd–Tl; Group D, Hg–Li–Sc–Ti–Eu–Nb–Cs–W; Group E, Bi–Sb; and Group F, Co–Ni–Cu–Pb–Zn–Mg–Se–Ca–Mn–S–Fe. The correlation coefficients of some elements, including Co, Cr, Cu, Fe, Hg, Li, Mo, Ni, P, S, Sc, U, V, and Zn, with ash yield are below the statistically significant value. Only Cr and Cu are negatively correlated to ash yield (−0.07 and −0.01, respectively), showing intermediate (organic and inorganic) affinity. Manganese and Fe are characterized by carbonate affinity probably due to high content of epigenetic veined ankerite in some coals. Phosphorus has low correlation coefficients with any other elements and is not included in these six associations. There are five possible genetic types of enrichment of elements in coal from western Guizhou Province: source rock, volcanic ash, low-temperature hydrothermal fluid, groundwater, and magmatic hydrothermal inputs. 相似文献
18.
吉林白山地区原煤微量元素地球化学特征 总被引：2，自引：1，他引：1
对吉林白山地区煤矿主采煤层中的As、B、Ba、Cd、Cu、Hg、Pb、Se、Sr等微量元素进行了分析,结果表明:太原组与山西组由于成煤环境不同,微量元素组成及其质量分数存在一定的差异,太原组原煤中As、B、Hg、Pb、Se、Zn的质量分数明显高于山西组,山西组原煤中Ba、Cr、Cu、Mn、V的质量分数明显高于太原组。白山地区原煤中As、B、Hg、Pb、Se的质量分数明显高于地壳元素平均值,呈富集状态;Co、Cd与地壳平均值接近,其他元素均亏损。与全国煤中微量元素的质量分数平均值相比,As、Ba、Co、Cr、Cu、Hg、Ni、Pb、Se、V、Zn的质量分数高于全国平均值。B、Mn、Sr质量分数低于全国平均值。微量元素赋存状态及相关分析表明,Fe与亲硫有害元素As、Cu、Hg、Pb、Se具有显著相关关系,说明煤中黄铁矿及其他硫化物是许多有害微量元素的重要载体。 相似文献
19.
二叠系龙潭组是黔西南重要成煤期煤系地层,更是许多微细粒浸染型金矿的赋矿地层之一,该套地层底部金及相关低温元素（As、Ag、sb、H卧叽、Pb和zn）丰度较高,为一煤金建造,该建造具有丰富的物源、热源和水源和良好的层位、岩性组合及构造条件,这些对金矿形成贡献作用明显,认为龙潭组煤金建造在黔西南一些金矿形成过程中的控制作用至关重要。 相似文献
20.
晋北-宁北煤中痕量元素的地球化学特征 总被引：2，自引：1，他引：2
应用仪器中子活化 (INAA)、电感耦合等离子体原子发射光谱 (ICP- AES)和原子吸收光谱 (AAS)等方法测定了晋北-宁北一线 5对矿井、 2个露天矿、 5个电厂和 3个洗煤厂煤中环境敏感性痕量元素的含量;通过与中国土壤、其他地区煤以及世界范围煤中痕量元素含量进行对比,总结了研究区痕量元素的分布、富集特征,得知部分地区煤中 Hg、 Cd和 Se的含量较高,在燃烧利用过程中可能对环境造成影响.通过分析痕量元素与灰分、挥发分的相关性以及痕量元素间、痕量元素与 Al、 Fe和 Sp的相关、聚类特性,探讨了痕量元素间及其与矿物质间的亲合性及赋存特征. 相似文献