高温高压下水岩界面反应与金的迁移富集   总被引：1，自引：0，他引：1  

王玉荣  阚小凤  王志强 《矿物岩石地球化学通报》1997,(2)

高温高压下水岩界面反应与金的迁移富集王玉荣阚小凤王志强（中国科学院广州地球化学研究所，广州５１０６４０）关键词水岩界面反应自发电池实验地球化学本实验以哈达门沟［１］及东坪金矿［２］为地质背景，研究钾长石岩中金矿化富集的物理化学条件。该区金矿既与早期变...  相似文献   

浅谈雅江县城南各种地质灾害的关系     

唐小平 《四川地质学报》1997,(4)

对雅江县城南地质灾害的产生原因作了查明，为下一步综合整治提供依据。  相似文献   

相转移催化合成乙酸苄酯的研究   总被引：4，自引：0，他引：4  

杨志成  张海峰 《华东地质学院学报》1996,19(1):73-78

  相似文献   

岩盐及芒硝中各种化合物质量分数的计算     

孙周易  唐淑云 《矿物岩石》1996,16(1):101-103

本文以等物质的量的反应规则建立了岩盐、芒硝中各种化合物的质量分数的计算公式。这些公式既符合法定计量单位的要求，又方便计算。  相似文献   

Oxygen Isotope Exchange Kinetics Between Coexisting Minerals and Water in the Aral Granite Pluton of the Altay Mountains, Northern Xinjiang   总被引：2，自引：0，他引：2  

Liu Wei  Research Center of Mineral Resources Exploration  Chinese Academy of Sciences  Chinese Academy of Sciences  BeijingHe Baichu  Changsha Institute of Geotectonics  Chinese Academy of Sciences  Changsh  Hunanand Chen ZhenshengYichang Institute of Geology  Mineral Resources  Chinese Academy of GeologicalSciences  Yichang  Hubei 《《地质学报》英文版》1996,70(4)

Coexisting quartz, feldspar and biotite vary widely in their δ18O values and display a remarkable 18O/16O disequilibrium relation; especially, a quartz-feldspar reversal (△ 18OQUartz_feldspar< 0) exsists in the Aral granite pluton of the Altay Mountains, northern Xinjiang. The 18O / 16O exchange reaction definitely occurred between granite and water. Initial δ18O values of the granite and exotic fluid are evaluated by the mass balance consideration. The conventional method of discrimination between various magma derivations simply with δ18O values of either whole rock or separate minerals is misleading and unreliable. Experiments carried out by the authors show that the 18O / 16O exchange reaction is not accompanied by what geologists describe as petrological and mineralogical alteration effect. This decoupling relation implies that exchange reaction occurs at a relatively high temperature during subsolidus-postmagmatic cooling of magmas. The exchange mechanism is mainly diffusion-controlled. It is  相似文献   

5－（4－羧基苯偶氮）－8－（对甲苯磺酰氨基）－喹啉与金显色反应研究及应用   总被引：4，自引：0，他引：4  

殷志禹  徐其亨  赵建为 《岩矿测试》1996,(2)

以８－氨基喹啉为母体，合成了新试剂５－（４－羧基苯偶氮）－８－（对甲苯磺酰氨基）－喹啉（ＣＰＴＳＱ），研究了它与Ａｕ的显色反应，在ＣＴＭＡＢ存在下，于ｐＨ１０～１３的ＮａＯＨ介质中，ＣＰＴＳＱ与Ａｕ形成２：１紫蓝色络合物，最大吸收峰位于６１０ｎｍ，摩尔吸光系数１．０×ｌ０５Ｌ·ｍｏｌ－１·ｃｍ－１，Ａｕ含量在０～１．２ｍｇ／Ｌ内符合比尔定律。方法选择性好，灵敏度高，操作简便，已用于金矿石样品中Ａｕ的测定，结果满意。  相似文献   

地洼盆地砂岩铜矿床成矿作用的化学动力学和热力学研究     

谭凯旋 Kaixu.  T 《大地构造与成矿学》1996,20(3):229-237

对我国南方中新生代地洼盆地中的砂岩铜矿床进行了化学动力学与热力学的理论与实验研究。矿源岩中以辉铜矿和黄铜矿最有利于溶解和迁移，ＮａＣｌ对Ｃｕ的溶解和含矿流体的形成起了催化作用。溶液中Ｃｕ以络合物的形式迁移，其中以一价铜氯络合物为主；温度的降低和溶液中性化导致了络合物的失稳、分解和铜矿物的沉淀。铜矿物的化学动力学和热力学制约了砂岩铜矿中以辉铜矿为主及矿床分带的形成。  相似文献   

高温超高压下Ni40Mn30Fe30与叶蜡石反应的研究     

朱成明  金志升 《矿物学报》1996,16(4):370-376

本文对Ｎｉ４０Ｍｎ３０Ｆｅ３０合金与在不同焙烧温度下得到的含水叶蜡，在高温超高压下的反应进行了实验研究，温度测至１４２０℃，压是至５．５ＧＰａ，研究了该反应的物质－化学机制，以及反应速率与温度，压力，含水量等参数的关系，对高压下物质迁移运动的固有特征进行了探讨。  相似文献   

A Study on the Geological—Geochemical Dynamics of Hydrothermal Ore Deposition as Exemplified by the Muping—Rushan Gold Deposit Belt,Eastern Shandong,China     

赵伦山  高太忠等 《中国地球化学学报》1996,15(4):289-295

This paper presents a method of establishing a hydrothermal ore-forming reaction system.On the basis of the study of four typical hydrothermal deposits,the following conclusions concerning geochemical dynamic controlling during hydrothermal mineralization have been sions concerning geochemical dynaamic controlling during hydrothermal mineralization have been drawn:(1)The regional tectonic activities control the concentration and dispersion of elements in the ore-forming process in terms of their effects on the thermodynamic nature and conditions of the ore-forming reaction system.(2)During hydrothermal mineralization the activites of ore-bearing faults can be divideb into two stages:the brittle splitting stage and the brittle-tough tensing stage,which would create characteristically different geodynamic conditions for the geochemical thermodynamic ore-forming system.(3)The hydrothermal ore-forming reaaction system is an open dynamic system.At the brittle splitting stage the system was so strongly supersaturated and unequilibrated as to speed up and enhance the crystallization and differentiation of ore-forming fluids.And at the brittle-tough tensing stage,the ore-forming system was in a weak supersaturated state;with decreasing temperature and pressure the crystallization of oreforming material would show down,and it can be regarded as an equilibrated state.(4)In the lates stages of hydrothermal evolution,gold would be concentrated in the residual ore-forming solution.The pulsating fracture activite in this stage led to the crush of pyrite ore and it was then filled with gold-enriched solution,forming high-grage“fissure”gold ore.This ore-forming process could be called the coupling mechanism of ore formation.  相似文献   

碳酸锰氧化实验和热力学分析     

郝瑞霞  关广岳 《地质论评》1997,43(2):167-172

通过对碳酸锰氧化实验的结果分析和讨论，建立了一种适合于锰氧化过程的非平衡热力学模型，并利用此模型对硫酸锰氧化过程作了热力学可行性分析，研究结果表明，碳酸锰氧化过程是矿物组合的变化过程，也是锰自身价态的转为过程，整个过程既存在平衡状态，又存在非平衡状态，是一个不可逆的，多相的复杂反应。  相似文献