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八庙—青山金红石矿床化学成分与成矿关系 总被引:1,自引:0,他引:1
本矿床是我国金红石矿床重要的成因及工业类型,为具有特定化学成分的岩石在特定变质条件下形成的。本文通过对大量数据的处理,查明了化学成分和成矿的关系,高Al2O3,MgO,Fe2O3+FeO,K2O,P2O5,H2O^+,MnO,低SiO2,CaO,Na2O,CO2,S等,利于钛富集;高TiO2,MgO,P2O5,S,低SiO2,CaO,K2O,Al2O3,Fe2O3/FeO,利于金红石形成,高Sf, 相似文献
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催化动力学光度法测定痕量铁的研究 总被引:2,自引:0,他引:2
研究了在pH8.5的Na2B4O7-HCl介质中,Fe^3+催化H2O2氧化茜素红褪色,建立了动力学光度法测定痕量Fe^3+的方法。方法检出限0.043μg/ml,线性范围0 ̄0.17μg/ml,除Mn^2+、Co^2+等离子外,其余共存离子基本无干扰,实测了天然水和化学试剂中痕量Fe^3+,结果满意。 相似文献
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对江汉盆地T油田主要的工业储层-下第三系新光沟嘴组沉积岩石的成岩流体进行了热力学研究。实测的成岩矿物流体包裹体的均一温度为110-139℃,属于该区中成岩阶段的温度范围(67-155℃)。成岩流体的压力为10.2-56MPa。成岩流体中阳离子的活度出现Ca^2+>Mg^2+>Na^+>K^+>Fe^3+>Fe^2+;阴离子的活离出现HCO3^->SO4^2->F^->Cl^->CO3^2-;气相成 相似文献
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含铁绿柱石的改色机制研究 总被引:7,自引:0,他引:7
含铁绿柱石经γ射线辐照或特定温度热处理,可因铁价态的改变引起颜色发生相应变化。处理前后的吸收光谱和顺磁共振谱研究表明,辐作用使隧道位的Fe^2+氧化Fe%3+,八一位上的Fe^3+还原为Fe^2+,热处理使隧道位及八面体位Fe^3+均还原为Fe^2+。 相似文献
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矿物3CaO·3Al_2O_3·BaSO_4形成过程研究 总被引:1,自引:0,他引:1
eoreanu等[1]研究CaOAl2O3Mx(SO4)Y[M=Mg2+、Sr2+、Ba2+、Zn2+、Fe2+、Fe3+、Al3]系统中,形成类似于矿物3CaO·3Al2O3·CaSO4(硫铝酸钙)的可能性时,报道合成了新矿物3CaO·3Al2O3·BaSO4(简写为3CA·BaSO4);部分学者[2,3]研究过它的胶凝性能等。在有关文献中,研究者制备研究用纯矿物的煅烧条件、获得样品的矿相组成不尽相同。如文献[1]在温度1400℃保温240min,制备的样品包括铝酸钙(CaO·Al2O3… 相似文献
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浙西石炭纪层状硅质岩地球化学特征及其意义 总被引:7,自引:0,他引:7
在浙西石炭纪地层中存在与地层整合产出的层状硅质岩。硅质岩中FeO、MnO、TiO2、Al2O3、MgO、CaO、Na2O、K2O等含量相对较高,富集As、Sb、Bi、Au、Ag、Ga,Fe2O3/FeO、SiO2/Al2O3、SiO2/(Na2O+K2O)、SiO2/MgO比值较小,稀土元素总量低,Ce弱负异常,重稀土相对富集,包裹体富含气相组份CH4、CO2、N2、CO、H2,具热水沉积硅质岩的地球化学特征。在Fe—Mn—(Ni+Co+Cu)三角图及SiO2—Al2O3、SiO2—Fe2O3图上均属于热水沉积硅质岩。硅质岩中硅、氧同位素也显示其热水成因之特点。硅质岩的硅同位素和稀土元素Ce/Ce※值表明本区层状硅质岩主要是在浅海环境下沉积的。硅质岩的形成温度较高,为98℃~152℃ 相似文献
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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
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正1 Introduction Geological studies established on several sections in Lanping-Simao basin have shown that the salt-bearing strata of Mengyejing formation(Yunlong Fm.in Lanping basin)are constituted by an alternation of salt layers and interbedded facies.The latter consists mainly of mudstones,and mudstone-rich conglomerate.The mineralogy and geochemistry of salt-bearing beds and 相似文献
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正On 22nd April 2014,with the approach of the 45th World Earth Day,China’s Ministry of Land and resources issued the status of China’s mineral resources in 2013.The first task of the prospecting breakthrough strategy action implemented in the last five years has been completed,and China’s security capacity for mineral resources has been significantly improved.In the 相似文献
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正There are more than 700 salt lakes with area of more than 1km2 on the Qinghai-Tibet Plateau of China.In recent years,an oilfield brine was also found in the Nanyishan Section of Qaidam Basin in the Qinghai-Tibet 相似文献
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正1 Introduction Physical and numerical models are constructed to investigate the evolution and mechanism of salt migration driven by tectonic processes.In recent years,we have designed and ran series of models to simulate salt 相似文献
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YUAN Qin LI Jianguo QIN Zhanjie WEI Haicheng SHENG Shurong SHAN Fashou 《《地质学报》英文版》2014,88(Z1):276-276
正The study of Cretaceous-Palaeogene salt-bearing strata of the Khorat Basin Laos and the Lanping-Simao Basin in Yunnan,China has an great significance not only in explaining the basin evolution and the genesis of potash 相似文献
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正Potash is one of the long-term scare deposits in China,and potash prospecting has long been listed as a key brainstorm project for our nation and geological prospecting units.There have been considerable studies in search for potash deposits in the Kuqa depression of the Tarim basin(Jackson et al.,1991;Gemmer et al.,2004;Vendeville,2005;Vendeville and Jackson,1992a,1992b), 相似文献
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正1 Introduction Qaidam Basin in Qinghai,including 43 salt lakes with multiple dominant mineral such as potassium,magnesium,lithium etc.,is the most intensive distribution of Saline 相似文献