兰坪白秧坪铜银多金属矿集区西矿带矿床成因   总被引：7，自引：0，他引：7  

张尔新 《云南地质》2005,24(3):282-289

西矿带受瞎眼山断裂和四十里箐-上下庄断裂控制,矿体产于近NS向断裂旁侧次级断裂中,发育典型的中低温热液矿物组合,成矿流体来源于深部的热卤水.硫、铅同位素反映成矿物质具深源特征,稀土元素组成具有极明显的δEu负异常和δCe负异常,构造热流体为成矿的主导因素.成因类型属于推覆构造有关的中低温浅成热液矿床.  相似文献   

吸附法盐湖卤水提锂的研究进展   总被引：14，自引：4，他引：14       下载免费PDF全文

肖小玲  戴志锋  祝增虎  马培华 《盐湖研究》2005,13(2):66-69

简介了锂的广阔市场前景和资源概况,明确了从盐湖卤水中提取锂的必要性。论述了吸附法提锂的技术现状,重点介绍了几种无机吸附剂的基本性能和吸附机理。分析了当今卤水提锂技术中存在的一些问题,并指出了吸附法卤水提锂的研究方向。  相似文献   

Bromine and stable isotopic profiles of formation waters from potash mine-shafts, Saskatchewan, Canada   总被引：1，自引：0，他引：1  

G.K.S. Jensen  B.J. Rostron  M.J.M. Duke  C. Holmden 《Journal of Geochemical Exploration》2006,89(1-3):170

Sixty-five inflow samples from access shafts were collected at three separate potash mines in order to construct three 1000 m deep hydrochemical profiles. Bromine concentrations, and δD and δ¹⁸O stable isotopic compositions, increase with depth in each case. Measured isotopic ratios have not changed in 15+ years since the mine-inflows were first sampled, implying little change in the hydraulic regimes at the mines over time. However, the bromine concentrations are typically a factor of five lower than previously reported. Newer analytical techniques have improved the accuracy, precision and resolution of the hydrochemical profiles. Results indicate that the salinity of the inflow waters originated as mixtures of evaporatively concentrated seawater, meteoric water, and brine derived from halite dissolution. Extremely concentrated brines (TDS > 525 g/L) were found at the Cory and Allan potash mines some 55 km apart, but their role in the paleohydrogeology of the basin remains uncertain.  相似文献   

Fluid-induced high-temperature metasomatism at Rundv?gshetta in the Lützow-Holm Complex,East Antarctica: Implications for the role of brine during granulite formation     

Kazuki Takahashi  Toshiaki Tsunogae  Emmanuel Nwachukwu Ugwuonah 《地学前缘(英文版)》2018,9(5):1309-1323

We report new petrological, phase equilibria modeling, and fluid inclusion data for pelitic and mafic granulites from Rundv?gshetta in the highest-grade region of the Neoproterozoic Lützow-Holm Complex(LHC),East Antarctica, and provide unequivocal evidence for fluid-rock interaction and high-temperature metasomatism in the presence of brine fluid. The studied locality is composed dominantly of well-foliated pelitic granulite(K-feldspar+quartz+sillimanite+garnet+ilmenite) with foliation-parallel bands and/or layers of mafic granulite(plagioclase+orthopyroxene+garnet+ilmenite+quartz+biotite). The boundary between the two lithologies is defined by thin(about 1 -20 cm in thick) garnet-rich layers with a common mineral assemblage of garnet+plagioclase+quartz+ilmenite+biotite ? orthopyroxene. Systematic increase of grossular and decrease of pyrope contents in garnet as well as decreasing Mg/(Fe+Mg) ratio of biotite from the pelitic granulite to garnet-rich rock and mafic granulite suggest that the garnet-rich layer was formed by metasomatic interaction between the two granulite lithologies. Phase equilibria modeling in the system NCKFMASHTO demonstrates that the metasomatism took place at 850 -860℃, which is slightly lower than the peak metamorphism of this region, and the modal abundance of garnet is the highest along the metapeliteemetabasite boundary(up to 40%), which is consistent with the field and thin section observations. The occurrence of brine(7.0 -10.9 wt.% Na Cleqfor ice melting or 25.1 -25.5 wt.% NaC leqfor hydrohalite melting) fluid inclusions as a primary phase trapped within plagioclase in the garnet-rich layer and the occurrence of Cl-rich biotite(Cl = 0.22 -0.60 wt.%) in the metasomatic rock compared to that in pelitic(0.15 -0.24 wt.%) and mafic(0.06-0.13 wt.%) granulites suggest infiltration of brine fluid could have given rise to the high-temperature metasomatism. The fluid might have been derived from external sources possibly related to the formation of major suture zones formed during the Gondwana amalgamation.  相似文献   

察尔汗盐湖铷资源利用——从基础认知到技术创新          下载免费PDF全文

高丹丹  李东东  樊燕飞  李武 《盐湖研究》2022,30(3):1-11, 41

铷是诸多高新技术领域中的关键元素。青海察尔汗盐湖卤水中蕴藏着丰富的铷资源,但由于铷浓度极低,且与大量钠、钾、镁等离子共存,提取难度极大。利用已知技术从察尔汗盐湖卤水中直接提取铷难以满足经济性约束的前提,这成为察尔汗盐湖铷资源难以利用的症结之一。本文从理论和实验两个方面分析了NaCl+KCl+RbCl+MgCl₂+H₂O体系中(K,Rb)Cl和铷钾光卤石固溶体—水溶液平衡对察尔汗盐湖卤水中铷分布的制约作用,确定了钾光卤石基固溶体是控制卤水中微量铷进入固相的关键矿物,钾光卤石的形成会使卤水中的铷浓度迅速下降至极低水平。用光卤石矿生产氯化钾,铷几乎全部进入氯化钾产品中,这一结论得到了现场盐田样品分析结果的支持。在上述新认知的启发下,我们设计了从察尔汗盐湖氯化钾产品中浓缩铷的工艺流程,并进行了公斤级小试和吨级放大试验,获得了铷浓度为400 mg/L的富铷料液,其中镁/铷比和钾/铷比均大幅降低;此外,进一步利用本团队成熟的t-BAMBP萃取方法可高效提取氯化铷,其工艺综合成本约为2 090 元/kg,较好满足了察尔汗盐湖铷资源开发的经济性前提。  相似文献   

昌邑市卤水资源总体规划利用探讨          下载免费PDF全文

王铁楼  张艳美  高延航 《山东国土资源》2012,28(8):65-66,70

昌邑市立足卤水资源优势,全面规划、综合开发不断加大监管力度,坚持"全面规划、综合开发、分层实施、重点突破"的原则,全方位引进人才,加强科技横向联合,创造尊重知识、尊重人才,取得经济效益、社会效益、生态效益同步发展,维护了北部沿海经济可持续发展。针对现阶段卤水资源总体规划利用中科技力量投入不足、缺乏新技术、新工艺及高新技术产品和综合利用方面存在的问题,研究分析其成因并提出相应的建议和对策。  相似文献   

罗布泊第四纪湖泊沉积序列及钾盐资源的形成   总被引：1，自引：0，他引：1  

胡东生  张华京  徐冰  田新红  陈立新  彭渤  张国伟 《海洋与湖沼》2007,38(3):279-288

为在我国新生代大陆沉积盆地开展区域找矿及钾盐资源预测提供科学依据, 采用地球卫星遥感资料和地面调查与化学测试以及区域盐湖卤水演化环境的演绎分析等手段, 综合方法, 揭示了罗布泊盆地第四纪沉积层序和湖泊气候环境变化的基本特征与古湖泊湖水及现代湖水的饱和流结晶路线及成盐成矿演化趋势.区域盐湖卤水演化环境和地质钻探资料及相图表明, 罗布泊地区钾盐矿床的成盐矿物以钾的硫酸盐矿物为主, 并没有出现真正意义上的钾盐沉积阶段(即氯化物钾盐析出阶段), 而钾盐卤水矿床却是一个积极的找矿方向.根据断裂组合及深部地质作用的分析, 这一地段是现代地质作用条件下形成的呈北东向展布的地堑构造系统, 富钾卤水蕴藏在地堑构造系统的中央断裂带内.综合分析表明, 通过地堑构造系统的中央断裂的贯通作用, 使深层卤水以及表层渗滤水向断裂破碎部位聚集, 并由于深部卤水的运动, 使深层盐岩系地层发生选择性溶解和表层渗滤水, 使浅部疏松堆积物的易溶性氧化钾溶解, 从而导致富钾卤水的富集而形成超大型液体钾盐矿床.  相似文献   

察尔汗盐湖S3盐层晶间卤水分异特征及成因的统计研究          下载免费PDF全文

徐少康 《盐湖研究》1993,1(4):9-20

1962年,苏联学者М.Г.Баляшко提出了干盐湖晶间卤水分异的成因理论一“重力垂直分异”说,后来,此理论被我国盐矿地质学家引用到察尔汗盐湖。本文首次在“系统论”思想指导下,及数理统计方法深入细致地研究了该湖S_3盐层晶间卤水分异特征,提出了新的晶间卤水分异成因理论—“阶段性淡化”说,具有重要的经济和理论意义。  相似文献   

盐田兑卤法提高光卤石矿质量的方法探讨   总被引：1，自引：1，他引：0       下载免费PDF全文

李建国  王成玲 《盐湖研究》2007,15(3):33-36,47

通过相图分析及计算,介绍了一种"由盐湖卤水兑卤除氯化钠后,首先获得成矿卤水,然后对其蒸发制取质量较好光卤石矿"的生产方法。  相似文献