应用地气测量技术探测甲基卡稀有金属矿区中的隐伏矿体          下载免费PDF全文

王秋波  梁斌  刘婷  徐志强  耿艳 《地质科技通报》2020,39(2):85-93

以甲基卡稀有金属矿区X03号矿体和烧炭沟矿体2个隐伏矿体作为研究对象,采用主动吸气法,以5%稀硝酸溶液作为捕集剂进行地气测量试验研究。结果表明,地气捕集液中Li、Be、Rb、Cs、Na、B等元素在矿体上方出现多点连续的组合异常,可以指示地表以下30~100 m的隐伏矿体。X03号矿体35号勘探线上,地气中成矿元素异常与土壤中元素含量之间没有相关性,表明地气异常并不是土壤元素含量所形成的,而是来源于隐伏矿体,是隐伏矿体的直接信息反映。地气异常表现为顶部异常特征,隐伏矿体位于异常的下部。甲基卡稀有金属矿区采用地气测量技术寻找隐伏矿体时,在成矿地质条件研究的基础上,结合电法等地球物理资料,可在地气异常的上方布置钻探工程进行钻探验证。   相似文献   

超大型稀有稀土矿床的某些特征   总被引：2，自引：0，他引：2  

林德松 《矿产与地质》1997,11(1):14-19

稀有稀土超大型矿床的储量为大型矿床储量的５倍以上（ＲＥＥ、Ｂｅ）或１０倍以上（Ｌｉ、Ｃｓ、Ｎｂ、Ｔａ、Ｚｒ）。这类矿床大多与碱性岩类岩石有关，主要分布在地台区，成岩成矿时代以前寒武纪为主，其次为中生代。成矿作用具有多期次性，矿化往往发生在更为还原条件下。超大型富矿与深部成矿源有着直接联系  相似文献   

稀有稀土资源的地质—经济分析     

林德松 《矿产与地质》1997,11(3):152-157

根据世界一些主要国家的稀有稀土资源政策以及稀有金属主要矿种（锂、铍、铌、钽、锆、稀土）的资源现状，指出世界稀有金属资源充足，可以保证未来相当长时期的需求。从总的看，世界稀有金属需求殷切，其产量和需求量呈逐年稳步增长趋势。  相似文献   

武夷山稀有、贵金属矿带成矿特征及找矿方向   总被引：1，自引：2，他引：1  

曾晓建 《矿产与地质》2001,15(Z1):434-439

武夷山稀有、贵金属矿带受NE向构造岩浆岩带控制.稀有金属成矿的时空分布上显示出从早到晚期由南侧伟晶岩型往北部钠长石化花岗岩型的变化趋势,贵金属成矿由银(金)变为金银矿的演化.  相似文献   

Distribution of uranium and thorium in Irtysh River and the upriver wastewater from a rare metal mine impact on it     

Shehong LI Baoshan ZHENG Jianming ZHU Xiaoying YU 《中国地球化学学报》2006,25(B08):43-44

Uranium and Th are important radioactive elements. Most studies were focused on their environmental impact from uranium deposits and mining sites. But other sorts of mines such as rare metals mines are associated highly with uranium and thorium, too. In China, the Irtysh River is the only river that runs into the Arctic Ocean. The famous Koktokay rare metal pegmatite deposit is located in the headwater region of this river and has been exploited for several decades. The waste ore piled along the riverside as long as several kilometers. The wastewater flom the concentrating plant is discharged into the river directly. In addition, uranium and thorium can be leached from the waste ore into the river in the weathering process. So it is necessary to study the uranium and thorium distribution in the branch and trunk streams of the Irtysh River and the wastewater from the mining site impact on it. In this study, the contents of uranium and thorium in water samples from the Irtysh River and rare metal mine wastewater have been detected directly with ICP-MS. Uranium and thorium distribution and geochemical behaviors in the Irtysh River basin have been studied. The environmental uranium and thorium pollution status in the Irtysh River and wastewater from a rare metal mine impact on it have also been evaluated. The study shows that uranium and thorium contents in wastewater from a rare metal mine are as high as 78.311 μg/L and 0.627 μg/L, respectively, so we should also pay attention to the radioactive pollution from the rare metal mine. The average contents of U and Th in the branch streams of the Irtysh River are 0.572 μg/L and 0.015 μg/L, respectively. At the mean time, in the trunk of the Irtysh River, average thorium content is 0.019 μg/L while U is up to 2.234 μg/L, much higher than the average content （0.0309 μg/L） of the world rivers. From upstream to downstream in the trunk of the Irtysh River, thorium content declines gradually due to dilution by other branches and deposition itself.  相似文献   

别珍套(山)花岗岩带地质特征及含矿性     

董占清  田阔邦  张兴龙 《新疆地质》1989,(2)

别珍套花岗岩带花岗岩为S型花岗岩.各岩体分异充分.为岩浆晚期产物.对稀有稀土元素成矿有利.  相似文献   

福建南平花岗伟晶岩中绿柱石的矿物学研究   总被引：4，自引：0，他引：4  

杨岳清 《福建地质》1998,17(2):68-78

福建南平花岗伟晶岩中铍矿物种类繁多,其中最主要的是绿柱石,它主要集中产出在稀有金属构成矿化的白云母－钠长石－锂辉石伟晶岩中,其中,以石英－叠层白云母结构带内最多。在不同类型或同一类型伟晶岩的不同结构带中,绿柱石的物理性质和化学成分均有一定差异,特别是化学成分中稀有碱金属的含量变化,不仅影响了它的物理性质、晶体结构、红外光谱、差热分析等一系列特征,而且和伟晶岩的稀有金属矿化强度也有密切的联系。因此,绿柱石是花岗伟晶岩中很有意义的一个标型矿物。  相似文献   

Geochemical characteristics and evaluation of Nb and Ta deposits in Nianzishan area of Heilongjiang Province     

ZHANG Jianfeng  WAN Taiping  LI Xinpeng  YANG Wenpeng  ZHAO Zhonghai  XU Donghai 《中国地质调查》2014,7(2):30-38

In order to improve the geochemical research degree of Nb and Ta deposits in Nianzishan area, the authors conducted 1:10 000 soil geochemical survey to comprehensively analyze the characteristics of geochemical element content, single element exception and comprehensive anomaly in the study area. The results show that Nb, Ta and other elements in Nizishan area belong to high background field and are unevenly distributed in the soil, which may result in the local enrichment of ore deposits. By R-type clustering analysis, these 18 elements were divided into three groups of precious and non-ferrous metal elements, rare and rare earth elements, and dispersed elements, which reflects the clustering and combination characteristics of normal granite elements, indicating that Nb and Ta minerals are closely related to granite bodies. In the study area, 521 single element anomalies and 12 composite anomalies were identified. Among these anomalies, three composite anomalies, Nian-2012-Ht-2, Nian -2012-Ht-7 and Nian -2012-Ht-11, were the key anomalies with great metallogenic potential. Three low-grade Nb and Ta ore bodies and 11 Nb and Ta mineralized bodies were found in the Early Cretaceous alkaline granite and syenogranite after trenching and drilling engineering verification.  相似文献   

江西宜春地区锂矿床地质特征及找矿远景分析     

罗微 《华东地质学院学报》2014,(1)

江西宜春地区锂等稀有金属矿床分布在九岭隆起带和武功山隆起带内,主要有风化壳型、钠化花岗岩型、细晶岩脉型共三种矿床类型,内生锂矿床与钠长石化、锂云母化白云母花岗岩密切相关。在概述宜春地区锂矿床成矿地质、地球化学异常特征的基础上,对锂矿床成因进行了探讨,总结了找矿标志,并划分出雅山、甘坊、蒙山找矿远景区。雅山南偏西震旦系千枚岩之下存在隐伏岩体,对寻找隐伏锂矿床具良好的指示作用;甘坊地区Li异常面积大,强度高,成矿地质条件优越,预测有很大的找矿潜力;蒙山地区具备锂的成矿地质条件,寻找锂矿资源的远景良好。  相似文献   

腾冲新歧碱长花岗岩稀有多金属风化壳矿床     

李良  陈永健  秦金虎 《云南地质》2009,28(1):72-77

新歧碱长花岗岩特富挥发分和成矿元素,多源补给充足。多期次、多阶段岩浆-热液活动,良好的活化、转移与聚矿地层介质环境,矿化岩体规模大,风化壳发育,可综合回收利用的矿化元素多,成矿远景及潜在经济价值较大。  相似文献