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银多金属矿床中黝铜矿族银硫盐矿物的特征及其意义 总被引：10，自引：0，他引：10
在国内外几个不同成因类型的银多金属矿床内产出的黝铜矿族银硫盐矿物中,除朗达矿床见有砷黝铜矿和含银砷黝铜矿外,较普遍共同发育有黝铜矿、含银黝铜矿和银黝铜矿、而后两者是最主要或主要的工业银矿物之一。按国际矿物学协会新矿物及矿物命名委员会的矿物命名原则,黝铜矿族矿物所含的Ｆｅ、Ｚｎ、Ｈｇ、Ｃｄ、Ｍｎ等不可作为矿物种的命名元素。蔡家营矿床的含银黝铜矿和银黝铜矿以Ｆｅ、Ｚｎ含量近似而有别于其余矿床的富Ｆｅ贫 相似文献
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四川西部金矿床中有３类金矿含有较多的黝铜矿族矿物,它们与黄铁矿、黄铜矿、方铅矿、闪锌矿和Ａｕ－Ａｇ系列矿物共同组成矿石的矿物组合。电子探针分析表明,黝铜矿族矿物的变种有黝铜矿和砷黝铜矿等。在黝铜矿中Ａｓ－Ｓｂ之间呈完全类质同象。在不同类型金矿中,黝铜矿具有不同的特征参数。产于碳酸盐岩系内的地下水热液型金矿中的黝铜矿成分自上而下由富锌锑向富铁砷演变,而且含银量也有降低的趋势。黝铜矿的产出及分带特征对 相似文献
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内蒙古翁牛特旗长汉卜罗铅锌矿伴生银赋存状态研究 总被引：1，自引：0，他引：1
《矿产与地质》2015,(4)
内蒙古翁牛特旗长汉卜罗铅锌矿位于新开地―乌丹近EW向大断裂的南侧,是一个叠加于前中生代褶皱基底之上的复合构造单元。本区矿石中银矿物和含银矿物种类较多,已发现8种,含银最高的为辉银矿,含银比较普遍的以黝铜矿族矿物为主。在黝铜矿矿物晶粒中,Ag的含量不均匀,呈带状和不规则状分布。选矿工艺中应特别重视黝铜矿系列矿物的回收。矿石中黄铜矿是银矿物与含银矿物的最主要载体矿物,占统计总数的34.48%,有效回收黄铜矿,是提高银回收率的关键。以黝铜矿族为例,含银与否或银含量多寡,与矿物中Sb关系密切。大量数据证明,黝铜矿中较高的As、Zn不利于Ag的富集,而Sb与Ag有更为密切的成生关系。 相似文献
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广东陆丰发现黝铜矿族系列矿物。根据矿物硬度、反射率、Ｘ衍射和电子探针分析数据，鉴定其为黝铜矿、砷黝铜矿、锌锑黝铜矿、锌砷黝铜矿、铋砷黝铜矿和碲砷黝铜矿。研究表明，在陆丰矿床中发现如此多黝铜矿亚种以及Ｆｅ、Ｚｎ、Ａｓ、Ｓｂ、Ｂｉ和Ｔｅ分别呈全完类质同象系列是极为罕见的。通过黝铜矿系列的研究，为在该区乃至东南沿海找矿开拓了新的思路 相似文献
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四川石棉金矿床中的黝铜矿族矿物 总被引：3，自引：0，他引：3
四川石棉西部碳酸盐岩系中的金矿床产于泥盆系中统,受层间蚀变破碎带控制。其中分布有为数较多的黟同矿族矿物,与黄铁矿、黄铜矿、方铅矿、闪锌矿和Ａｕ－Ａｇ系列矿物共同组成矿石的矿物组合和Ａｕ－Ｃｕ－Ａｇ－Ｐｂ－Ａｓ－Ｓｂ－Ｂｉ的元素组合。电子探针分析表明黝铜矿族矿物有同铜矿、黝铜矿、砷黝铜矿和锌砷黝铜帮等,其中,Ｆｅ－Ｚｎ、ＡｓＳｂ之间分别呈完全类质同象。在垂向上,黝铜矿的成分自上而下由富锌锑向富铁砷演 相似文献
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笔者在研究辽东地区铅锌铜隐伏矿床过程中,发现了几种少见的金属矿物(硫铋铜矿,银锑黝铜矿,硫铜钴矿)。经初步研究现简述如下: 1 矿物空间分布几种少见金属矿物在区内分布较普遍,限于工作程度关系,初步查定这些矿物产出于石湖沟、正沟门、盘岭等地(表l)。银锑黝铜矿比云南的含银量高155倍,为国内少见的含银高的银锑黝铜矿。表3银锑黝铜矿电子探针分析 相似文献
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内蒙古大井矿床中银矿物的研究 总被引：1，自引：0，他引：1
本文总结了内蒙古大井矿床中银矿物的类型，产出特征以及矿物命名的问题，详细描述了黝铜矿族，浓红银矿，脆银矿，自然银以及含银的铅－铋（锑）硫盐类矿物等主要银矿物的产出状态和化学成分特征，并讨论了相应的形成条件，同时指出本区银矿物主要形成于两个矿化阶段，即：早期黄铜矿－黄铁矿阶段，主要形成了黝铜矿族的含银矿物以及辉锑银矿，硫锑铜银矿等含铜的硫盐类矿物，晚期方铅矿－闪锌矿阶段，形成的银矿物种类较为繁杂，除形成黝铜矿族矿物外，多数含铅，铋的硫盐矿物以及自然银、硫化物和浓红银矿、脆银矿等无铜的简单硫盐等均是在这一阶段形成。 相似文献
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黝铜矿族矿物的EPMA研究 总被引：3，自引：0，他引：3
根据产自约20个不同矿床的黝铜矿族矿物的大量电子探针分析结果以及一些文献资料分析,黝铜矿族矿物是一类复杂的类质同象矿物系列。本文还对黝铜矿族矿物的分类命名规则以及相应的矿物种和变种名称提出意见和建议。 相似文献
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广西五圩锑矿床中含银锑黝铜矿 总被引：1，自引：0，他引：1
在五圩锑矿中发现了含银锑黝铜矿,粒径１ｍｍ～３ｍｍ,与其共生的矿物有：脆硫锑铅矿、方铅矿、黄铁矿、闪锌矿和辉锑矿。含银锑黝铜矿呈银灰色,金属光泽,条痕暗灰色,无解理,Ｈ＝４～４．５,ρ＝１．８６ｋｇ／ｃｍ＾３,显微镜下含银锑黝铜矿呈灰色,其均质性和反射率采用改装ＭＰＶ－３型显微光度计测定,仪器内标使用硅砂和（Ｗ,Ｔｉ）Ｃ;此外,分别采用Ｘ射线分析和电子探针确定了该矿物的物相和化学组成。 相似文献
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Our metallogenic studies of the Dachang ore field show that the country-rock media have great influence on the process of
mineralization. They can not only contribute part of the ore-forming material, but also have influence on the geochemical
evolution of granitic magma and ore fluids. The Dachang ore field can be taken as a typical example to show the influence
of country-rock media on mineralization. Geological field investigations indicate that where granites intruded weakly alkalic
country rocks (e.g. middle Devonian limestones and silicorites of platform facies in the Dachang), instead of carbonaceous
shales of reducing basin facies, Sn would be able to enter rock-forming minerals in large quantities to form cassiterite-sulfide
ore deposits of commercial value. So, it may be concluded that the process of magmatic differentiation-evolution, mineralization
and tectonic settings of ore deposits are, more or less, controlled by their country-rock media. 相似文献
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From the petrological study of ore-hosting focks which contain large anorthits crystals and the occurrence and chemical composition of anorthites and related minerals,the authors consider that the large anorthite crystals are of authigenic origin. The distribution characteristics of anorthites,i.e.,they are distributed along the bedding and structurally weak zones but not restricted to synsedimentary slump structures,and the relationship for some elements between anorthites and other minerals indicate that anorthites have resulted from reaction of circulating alkaline solutions rich in Al and Si with carbonated during the Indosinian orogeny.The results of this work suggest that the association of authigenic anorthites with bedded orebodies in the Dachang ore field may be the evidence that the mineralization is related to circulating underground hot waters. 相似文献
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大厂锡矿田海底热水沉积,后期岩浆热液叠加改造成矿的依据 总被引：6，自引：1，他引：6
通过矿田一些地质地球化学等成因依据的研究和长坡矿热水喷口的发现,提出区域地球化学场的存在,中元古界—下古生界原始矿源层的形成,泥盆纪海底火山—热水成矿作用、华力西—印支期大广地区石油的形成—迁移—聚积过程形成富含金属成矿物质的油气田,燕山期岩浆热液叠加改造成矿作用以及燕山期构造—岩浆作用破坏富含金属成矿物质的油气田而成矿等—系列地质作用在大厂地区地质历史上有机组合,形成大厂超大型矿床,而泥盆纪火山及海底热水作用、燕山期构造—岩浆作用则是主导成矿作用. 相似文献
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有机质在大厂锑矿成矿中的作用王华云，施继锡（贵州省地矿局地质科学研究所．贵阳５５０００４）（中国科学院地球化学研究所．贵阳５５０００２）关键词有机质，锑矿，成矿作用大厂锑矿是黔西南金、锑、汞矿带中的一个重要成矿单元。该矿带明显受盆地和盆缘构造演化的控... 相似文献
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Summary The Dachang Sn-polymetallic ore district is one of the largest tin producing districts in China. Its origin has long been
in dispute between magmatic-hydrothermal replacement and submarine exhalative-hydrothermal origin. The Dachang ore district
comprises several types of ore deposits, including the Lamo magmatogenic skarn deposit near a granite intrusion, the Changpo-Tongkeng
bedded and vein-type sulfide deposit, and the Gaofeng massive sulfide deposit. Sulfide minerals from the Lamo skarn ores show
δ34S values in the range between −3 and +4‰ with a mean close to zero, suggesting a major magmatic sulfur source that likely
was the intrusive Longxianggai granite. Sulfide minerals from the Gaofeng massive ores show higher δ34S values between +5 and +12‰, whereas sulfide minerals from the Changpo-Tongkeng bedded ores display lighter δ34S values between −7 and −0.2‰. The difference in the sulfur isotope ranges in the two deposits can be interpreted by different
degrees of inorganic thermochemcial reduction of marine sulfate using a one-step batch separation fractionation model. Sulfur
isotopic compositions from the vein-type ores at Changpo-Tongkeng vary widely from −8 to +4‰, but most of the data cluster
around −2.9‰, which is close to that of bedded ores (−3.6‰). The sulfur in vein-type ores might be derived from bedded ores
or it represents a mixture of magmatic- and sedimentary-derived sulfur. Pb isotopic compositions of sulfide minerals in the
Dachang ore district reveal a difference between massive and bedded ores, with the massive ores displaying more radiogenic
Pb isotope ratios. Correlations of 206Pb/204Pb and 207Pb/204Pb or 208Pb/204Pb for the massive and bedded ores are interpreted as two-component mixing of Pb leached from sedimentary host rocks and from
deep-seated Precambrian basement rocks composed of metamorphosed volcano-sedimentary rocks. Pb isotopic compositions of sulfide
minerals from vein-type ores overlap with those of bedded sulfides. Similar to the sulfur, the lead in vein-type ores might
be derived from bedded ores. Skarn ores at Lamo show very limited variations in Pb isotopic compositions, which may reflect
a major magmatic-hydrothermal lead source. Helium isotope data of fluid inclusions trapped in sulfides indicate that He in
the massive and bedded ores has a different origin than He in fluorite of granite-related veins. The 3He/4He ratios of 1.2–2.9 Ra of fluid inclusions from sulfides at Gaofeng and Changpo-Tongkeng imply a contribution of mantle-derived
fluids. Overall our data support a submarine exhalative-hydrothermal origin for the massive and bedded ore types at Dachang.
Supplementary material to this paper is available in electronic form at
Appendix available as electronic supplementary material 相似文献