野外快速测定矿石中银的方法

采用HNO3 NH4HF2混合深剂进行封闭溶样。在10%HNO3介质中，以CCX富集分离Ag，吸附在CCX的Ag经浓HNO3解脱后，在5%HNO3中，采用SCN^-滴定法进行测定，经矿样验证，该方法适用于矿石、金精矿中Ag的野外快速测定。     

发射光谱法快速测定银锡铜铅锌钼铍

使用两台摄谱仪同时接收光谱，以K2S2O7、NaF、Al2O3为缓冲剂，Ge、Sb为内标，测定化探样品中7项元素，检出限(μg／g)分别是：Ag0．02，Sn0．5，Cu 1，Pb 2，Zn 10，Mo 0．2，Be 0．5；精密度(RSD，n=20)在2．9％～16．8％。采用国家一级标准物质验证方法可靠性，测定结果与标准值一致。     

泡沫塑料分离富集原子吸收法测定氰化液中金和银

研究了装有聚醚型泡沫塑料和三苯基膦负载聚醚型泡沫塑料的吸附柱对Au,Ag的分离富集的条件,并应用于氰化液、解吸液和电解液中Au和Ag测定中的预富集,Au和Ag的回收率均>98％。对含Au量为0.91μg/ml,含Ag量0.36μg/ml的试样,经过10次测定,其相对标准偏差分别为1.22％和2.31％。     

用加压氰化浸出法提取金和银的工艺试验

针对常规氰化浸出提取Au、Ag工艺中浸出时间长，药品消耗大，金、银回收率低等现状，在保持原有选矿工艺流程不变的基础上，在氰化浸出环节上采用自行设计的高压浸出装置，对矿石进行加压氰化浸出提取Au、Ag工艺试验。通过改变浸出过程的压力，增加浸出溶液的O2含量，浸出时间由原来的一个流程24h缩短到45min；Au、Ag浸出率指标达到93．2％和73．0％，分别提高了19．6％和12．0％。     

容量法测定方铅矿中高含量银

报道了采用HNO3－H2SO4－HF溶样，KI容量法测定硅、铅含量较高样品中高含量银的方法。试验了滴定反应的酸度条件。在1．6mol/L HNO3介质中，银与碘化钾反应，生成碘化银沉淀。银的标准加入回收率为97．8％－100．4％。精密度试验，相对标准偏差为0．92％（n=11)。该法可溶解含硅银矿及角银矿中的银。方法已被用于测定矿石中高含量银。     

电感耦合等离子体质谱法直接同时测定地球化学样品中镓铟铊

报道了用HF—HNO3—HClO4分解样品，以^103Rh为内标元素，采用电感耦合等离子体质谱法直接同时测定地球化学样品中痕量镓、铟、铊的方法。方法检出限(6s)Ga、In、Tl分别为0．059、0．002、0．004μg／g，方法精密度(RSD，n＝12)为2.6％—5.3％。用国家一级标准物质进行验证，测定结果与标准值吻合。     

发射光谱法测定勘查地球化学样品中银硼锡钼铅

以K2S2O7、NaF、Al2O3和炭粉为缓冲剂，Ge为内标，电弧发射光谱法测定勘查地球化学样品中Ag、B、Sn、Mo、Pb。方法检出限为Ag0．013μg／g、B0．83μg/g、Sn0．23μg／g、Mo0．073μg/g、Pb0．37μg／g。方法精密度（RSD，n=12）为Ag4．2％～11．3％、B3．2％～6．5％、Sn2．6％～7．1％、Mo2．9％～6．3％、Pb1．57％～5．18％。测定了国家一级地球化学标准物质，结果与标准值相符。     

硫酸银催化容量法快速测定土壤中的有机碳

在硫酸溶液中，以Ag2SO4为摧化剂，加入过量K2Cr2O7标准溶液氧化土壤中的有机碳，然后用FeSO4标准溶液滴定剩余的K2Cr2O7标准溶液，返滴定法测定有机碳含量。实验测得S为0．0186(n＝15)，RSD％为3．60(X^-＝0．518％)；到定土境和水系沉积物等国家标准物质中有机碳的含量，相对误差小于11．5％。     

原子荧光光谱法测定地质样品中的痕量锗

分析了溶矿过程中HNO3、H2SO4、HClO4、H3PO4等对Ge的影响，采用AgNO3滤气装置消除气相干扰，测定了地质样品中的痕量锗，方法检出限为0．06μg／g，用土壤国家一级标准物质GBW 07401～GBW 07408验证方法，结果与标准值相符，其相对标准偏差(RSD，n=12)为3．66％～6．11％。     

黄原酯棉富集—液珠萃取比色法测定地质样品中的金

黄原酯棉(CCX)是金的良好的吸附体,本文将吸附了金的CCX用灰化法解脱。操作简单快速、成本低,灰化时无臭味、残渣少。浸取液用三正辛胺-TBP(1:3)混合萃取-金试剂液珠比色法测定Au,其液珠凝聚好,灵敏度高,选择性和稳定性都比单用TBP有所提高。方法的测定范围0.0005-xx g/t、配备金的野外快速分析箱,可作现场分析。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

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.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

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.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

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.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

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.     

PALEONTOLOGY

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.)     

GEOCHEMICAL EXPLORATION

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.)     

MICROPALAEONTOLOGY

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.)     

PETROLOGY

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.,     

ENVIRONMENTAL GEOLOGY

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     

PROSPECTING EXPLORATION

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