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文章对桂西地区堆积型铝土矿中伴生三水铝石的综合利用途径及其经济价值进行了初步的分析和评述,并对该类伴生三水铝土矿的勘探工作方法及评价指标提出了意见和建议。桂西地区堆积铝土矿中伴生的三水铝石资源具有巨大的综合利用价值,政府矿政管理部门、矿产勘查和开发单位应予以高度重视。 相似文献
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桂西铝多金属矿床地质地球化学特征与成矿机理 总被引：3，自引：0，他引：3
对桂西地区铝土矿及其围岩系统取样,进行了微量元素分析。结果表明,原生铝土矿的成矿母岩主要为下二叠统茅口灰岩,其次有少量古陆风化物的加入;区内原生铝土矿形成于海相的沉积环境,堆积型铝土矿由原生沉积型铝土矿风化淋滤而成。 相似文献
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文章总结归纳了桂西堆积型铝土矿中共生的三水铝石的赋存状态及其特征,并对其远景储量进行了估算,认为其开发潜力大,具有很大的综合利用价值. 相似文献
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通过对黔北务正道地区安场向斜东南翼ZK288-16井中大竹园组铝土矿含矿岩系的沉积学分析,辨别出该口钻井记录
下的包括两次准同生淋滤作用及一次后生淋滤作用在内的3次淋滤作用。土状-半土状铝土矿层是记录淋滤作用发生的标志性
层位,与下伏岩(矿)层呈现渐变关系,说明土状-半土状铝土矿是由碎屑状或豆鲕状铝土岩(矿)经过淋滤作用转化而来,在此过
程中,杂质元素被移除,铝元素相对富集而形成富矿,而碎屑状与豆鲕状铝土矿也经过不同程度的淋滤作用。区域上的钻孔对比
表明,区域内这种多期淋滤作用对于提升矿石品质、控制矿层厚度具有重要意义。 相似文献
下的包括两次准同生淋滤作用及一次后生淋滤作用在内的3次淋滤作用。土状-半土状铝土矿层是记录淋滤作用发生的标志性
层位,与下伏岩(矿)层呈现渐变关系,说明土状-半土状铝土矿是由碎屑状或豆鲕状铝土岩(矿)经过淋滤作用转化而来,在此过
程中,杂质元素被移除,铝元素相对富集而形成富矿,而碎屑状与豆鲕状铝土矿也经过不同程度的淋滤作用。区域上的钻孔对比
表明,区域内这种多期淋滤作用对于提升矿石品质、控制矿层厚度具有重要意义。 相似文献
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本文论述了贵港三水型铝土矿的化学成分及矿物组成特征,并对其工业利用前景作出评价。该矿属高铁低铝红土型矿床,广泛分布于贵港、横县和宾阳等地,矿层赋存于第四纪红土风化壳的中上部,矿体大部分出露地表。这是继福建漳浦、海南蓬莱和台湾大屯山之后的我国第四个三水型铝土矿。矿石的绝大部分由三水铝石、针铁矿、赤铁矿和高岭石所组成,其它矿物含量甚少、甚微;其中前三者为主要有用矿物,含量占85%左右。试验研究表明:三水铝石可用常压、低温和低碱浓度的拜耳法溶出,溶出率达95%;针铁矿和赤铁矿还原性能良好,回收季>90%。尽管矿石中铝和铁的品位较低,有些甚至达不到各自的工业品位要求,但两者的综合利用率高,伴生的TiO_2、V_2O_5、Ga等也达到综合利用要求,经济价值高,是一种新型的矿产资源。 相似文献
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务正道地区铝土矿底板地层黄龙组类化石及铝土矿层大竹园组、梁山组的孢粉化石限定,大竹园组的时代为早二叠
世。大竹园组铝土矿的沉积环境为向北半封闭的海湾或海泛湖。铝土矿形成于低纬度热带气候条件下,气候具旱季、雨季之分,
盆地水体为弱酸性还原条件,陆地植物生态系统和盆地微生物生态系统对铝土矿的形成起了重要作用。铝土矿的主要物源为志
留系韩家店组和石炭系黄龙组双重物源。陆源区风化的铝质通过胶体作用搬运到盆地中形成铝土质岩。铝土矿层形成之后,又
经历了多期次暴露地表的风化淋滤。淋滤作用分别在渗流带和潜流带形成土状、半土状铝土矿和致密状铝土矿,盆地内部铝土岩
破碎和胶体凝聚分别形成碎屑状、豆鲕状铝土矿。风化过程中多数元素发生了不同程度的丢失,而SiO2 的流失程度明显大于
Al2O3,从而形成铝土矿矿层。因此,盆地的沉积体系和古地理控制了铝土矿矿系的分布范围和厚度,多期次的淋滤作用控制了铝
土矿的品质和矿层的厚度。 相似文献
世。大竹园组铝土矿的沉积环境为向北半封闭的海湾或海泛湖。铝土矿形成于低纬度热带气候条件下,气候具旱季、雨季之分,
盆地水体为弱酸性还原条件,陆地植物生态系统和盆地微生物生态系统对铝土矿的形成起了重要作用。铝土矿的主要物源为志
留系韩家店组和石炭系黄龙组双重物源。陆源区风化的铝质通过胶体作用搬运到盆地中形成铝土质岩。铝土矿层形成之后,又
经历了多期次暴露地表的风化淋滤。淋滤作用分别在渗流带和潜流带形成土状、半土状铝土矿和致密状铝土矿,盆地内部铝土岩
破碎和胶体凝聚分别形成碎屑状、豆鲕状铝土矿。风化过程中多数元素发生了不同程度的丢失,而SiO2 的流失程度明显大于
Al2O3,从而形成铝土矿矿层。因此,盆地的沉积体系和古地理控制了铝土矿矿系的分布范围和厚度,多期次的淋滤作用控制了铝
土矿的品质和矿层的厚度。 相似文献
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岩溶堆积型铝土矿是我国华南特有的一种铝土矿工业类型.文章对平果岩溶堆积型铝土矿矿床的含矿岩系、矿体特征、矿石特征及其开采技术条件等进行了总结和分析,并对矿床成因进行了探讨分析. 相似文献
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Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area. 相似文献
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Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter. 相似文献
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正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a 相似文献
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The GRV 024516 and GRV 024517 meteorite samples collected from Grove Montains,Antactica are ureilite and H5 ordinary chondrite,respectively.Based on the study of mineralogy-petrology,the cosmic-ray exposure ages and gas retention ages of these two meteorites were determinated and calculated.Their cosmic-ray exposure ages are 33.3 Ma,51.7 Ma,and gas retention ages are 1936.8 Ma and 3720 Ma,respectively.The ureilite contains diamond,graphite and amorphous C,which are mainly carrier of noble gases indicating obviously shock metamorphism effects,which induced 40Ar partial loss.The H5 chondrite indicates thermal metamorphism of parent body,its gas retention age fall the range between 3220 Ma and 4510 Ma of the least shocked H5 chondrites 相似文献
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《极地研究(英文版)》2014,(3)
正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet. 相似文献
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《山地科学学报》2014,(4)
<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by 相似文献