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1.
本文研究的两种未定名硒矿物产于贵州省５０４轴汞钼多金属矿床内的含铀－硒方解石脉中。经ＪＣＸＡ－７３３型电子探针Ｘ射线显微分析仪分析，其平均化学成分（重量％）分别为：Ｓｅ４８．８０，Ｓ０．１１，Ｃｕ１７．４２，Ｈｇ１．６５，Ｓｂ３４．０８，Ｎｉ０．０２，Ｆｅ０．０５，Ａｓ０．５８及Ｓｅ３８．８９，Ｓ１．６５，Ｃｕ１７．７９，Ｈｇ２１．６３，Ｓｂ１９．５４，Ｎｉ０．０３，Ｆｅ０．１５，Ａｓ０．３３。它 相似文献
2.
含硒硫锑铅矿是硫锑铅矿的含硒变种，产于皖南宋冲锑－铅矿点的矿脉中，这是含硒硫锑铅矿在我国的首次发现。在该矿点，含硒硫锑铅矿含量高，独立形成锑－铅矿体，这在国内外尚属首例。含硒硫锑铅矿中Ｓｅ的含量ｗＳｅ＝１．５８８％，其化学式为（Ｐｂ４．６１７１Ａｇ０．０２１７）４．６３８８（Ｓｂ３．６７８１Ａｓ０．１９００）３．８６８１（Ｓ１０．６３４５Ｓｅ０．３６３７Ｔｅ０．００１８）１１。 相似文献
3.
黑西哥ＦｒｅｓｎｉｌｌｏＡｇ－Ｐｂ－Ｚｎ地区的ＳａｎｔｏＮｉｎｏ脉中，银含在螺状硫银矿及三个含银矿盐固溶体系列的矿物中，这些硫盐矿物是：浓红银矿、淡红银矿、硫锑铜银矿、硒硫铜银矿、黝铜矿及脆银矿。 相似文献
4.
新疆黄山铜镍成矿带中含镍系列矿物组分特征 总被引：2，自引：0，他引：2
黄山铜镍成矿带中含镍矿物种类繁多，成分复杂。根据显微镜下鉴定和电子探针成分分析，含镍矿物可分为Ｆｅ－Ｃｏ－Ｎｉ－Ｓ系列；Ｆｅ－Ｃｏ－Ｎｉ－Ａｓ系；Ｆｅ－Ｃｏ－Ｎｉ－Ａｓ－Ｓ系列。由于此类矿物相似的光性较多，本文着重进行了组分特征的研究。 相似文献
5.
哈密黄山东铜镍矿床中几个罕见矿物 总被引：4，自引：0，他引：4
本文概略地介绍了哈密黄山东Ｃｕ－Ｎｉ矿床产出的地质条件，含矿岩体的Ｓ，Ｎｉ丰度值（Ｗ＿ｓ２８２３×１０￣（－６），Ｗ＿（Ｎｉ）８２９×１０￣（－６）），以及矿石中出现的有趣矿石组构；另外，对新发现的三个罕见矿物（叶碲铋矿、自然铅、锑硫镍矿）的光学性质和化学成分也作了介绍。根据几个罕见矿物的化学成分和矿石组构特征，文章讨论了黄山东Ｃｕ－Ｎｉ矿床的成矿物理化学条件。结论是不宜形成富矿。 相似文献
6.
缅甸铂族金属砂矿中的矿物种类 总被引：1，自引：0，他引：1
采用电子探针分析（ＥＰＭＡ），对缅甸铂族金属砂矿中的矿物种类进行了研究。物质组成研究查明：主要组合矿物是Ｐｔ、Ｉｒ、Ｏｓ、Ｒｕ的自然元素和金属互化物。主要矿物是自然铂矿、铁铂合金、钌铱锇矿、等轴锇铱矿和铱锇矿。次要及稀有矿物是铂族金属的硫化物、砷化物、包括（Ｒｈ、Ｐｄ、Ｐｔ）２Ａｓ和（Ｒｈ、Ｐｄ、Ｐｔ、Ｎｉ）２Ａｓ两种陌生矿物、锑化物，以及含铂族元素的Ｆｅ、Ｎｉ、Ｃｕ硫化物。 相似文献
7.
在我国贵州某低中温热卤水改造层控铀－汞矿床和湖南某古岩溶热造铀矿床中几乎同时发现了新矿物─—硒锑矿（Ｓｂ＿２Ｓｅ＿３）．该矿物的单晶呈细板条状、针状，集合体呈放射状、禾束状。确定硒锑矿形成于１３０─１６０℃富含Ｃａ￣（２＋），Ｎａ￣＋，Ｍｇ￣（２＋），ＳＯ＿４￣２－，ＨＣＯ＿３￣－的弱酸性─弱碱性热液，伴生一套典型的低中温热液矿物组合和围岩蚀变。硒锑矿是低中温热液标型矿物 相似文献
8.
痕量银与meso－四（对－磺酸基苯基）卟啉显色反应的研究 总被引：4，自引：0，他引：4
研究了Ａｇ（Ｉ）与ｍｅｓｏ－四（对－磺酸基苯基）叶琳的光催化显色反应。在ｐＨｌ０的缓冲溶液中形成稳定的Ａｇ（Ｉ）－ＴＰＰＳ＿４－ＣＴＭＡＢ三元配合物，其最大吸收波长为４２６ｎｍ，组成为Ａｇ（１）ＴＰＰＳ＿４：ＣＴＭＡＢ＝１：１：２。表观摩尔吸光系数为２．７９×ｌ０￣５Ｌ·ｍｏｌ￣－１·ｃｍ￣－１，Ａｇ（１）的浓度在０～０．２μｇ／ｍｌ内符合比尔定律。基于此建立的测Ａｇ（Ｉ）方法灵敏度高，结合巯基棉分离干扰，可用于矿物中Ａｇ（Ｉ）的测定。 相似文献
9.
文章通过广西凤凰山银锰矿床中的Ｓ－Ｆｅ－Ｃｕ－Ａｇ－Ｓｎ系列矿物黄锡矿，含银黄锡矿，银黄锡矿，硫银锡矿的化学成分标型，标型矿物组合特征的研究，为该矿床的成因，深部隐伏银矿化，矿区及其外围的找矿提供了一定的信息。 相似文献
10.
曹亚文 《矿物岩石地球化学通报》1995,(3)
矿物的定义Ｅ．Ｈ．Ｎｉｃｋｅｌ（ＤｉｖｉｓｉｏｎｏｆＥｘｐｌｏＴａｔｉｏｎ＆Ｍｉｎｉｎｇ，ＣＳＩＲＯ，ＷｅｍｂｌｅｙＷＡ６０１４，Ａｕｓｔ，ｔｒａｌｉａ）响应矿物学界提出和要求颁布的、与当代技术发展相适应的矿物新定义的建议，国际矿物协会（ＩＭＡ）新矿... 相似文献
11.
Emily Keeble David I. Whiteside Michael J. Benton 《Proceedings of the Geologists' Association. Geologists' Association》2018,129(2):99-119
Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco. 相似文献
12.
Gilles Serge Odin 《Comptes Rendus Geoscience》2002,334(6):409-414
Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414. 相似文献
13.
The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts 总被引：4，自引：0，他引：4
The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H2O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H2O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species. 相似文献
14.
Emmanuel Skourtsos Daniel Vachard Alexandra Zambetakis-Lekkas Rossana Martini Louisette Zaninetti 《Comptes Rendus Geoscience》2002,334(12):925-931
Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931. 相似文献
15.
正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.) 相似文献
16.
正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.) 相似文献
17.
正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.) 相似文献
18.
正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus., 相似文献
19.
正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an 相似文献
20.
正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of 相似文献