陕西商丹地区花岗伟晶岩型稀有金属矿产成矿规律初探

杨文博1; 2; 周 海3; 宋公社2; 吴 鹏2; 王 强2

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DOI:10.3969/j.issn.1671-4172.2019.01.014

有色金属（矿山部分）:2019,71(1):64-71

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陕西商丹地区花岗伟晶岩型稀有金属矿产成矿规律初探

杨文博1,2^1,2,3, 周海3^1,2,4, 宋公社2^1,2,5, 吴鹏2^1,2,6, 王强2^1,2,7

(1.(1. 陕西省地质调查规划研究中心，西安 710068;2. 陕西省地质调查院，西安710054;3. 西北大学地质学系，西安710069);4.3. 西北大学地质学系，西安710070);5.3. 西北大学地质学系，西安710071);6.3. 西北大学地质学系，西安710072);7.3. 西北大学地质学系，西安710073))

A preliminary study on the metallogenic regularity of rare metal mineral resources of granitic pegmatite type in Shangdan area, Shaanxi Province

YANG Wenbo1,2^1,2,3, ZHOU Hai3^1,2,4, SONG Gongshe2^1,2,5, WU Peng2^1,2,6, WANG Qiang2^1,2,7

(1.(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China;2. Shaanxi Institute of Geological Survey, Xi’an 710054, China;3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710069, China);4.3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710070, China);5.3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710071, China);6.3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710072, China);7.3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710073, China))

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中文摘要: 陕西省目前发现的稀有金属矿床主要分布在秦巴地区，并且以伟晶岩型稀有金属矿产为主。其中研究程度最高的地区为北秦岭商丹伟晶岩密集区，前人研究表明该地区稀有金属主要为铷、铌（钽），其次为锂、锶、铍等；稀有金属成矿受区域构造位置、构造节理裂隙及围岩类型等条件制约。商丹地区伟晶岩型稀有金属矿产分布在北秦岭新元古代—早古生代构造带内；成矿期主要为早古生代；商丹地区内的多数伟晶岩在自身结构构造及宏观区域分布上都具有一定的分带性，都能找到伟晶岩的母岩体。通过对区内典型矿区对比研究，可知铷的矿化富集与伟晶岩的分带特征无太大的关系，与伟晶岩中的富铷长石、白云母关系较大；而其他锂、铌钽、铍等都有其独立矿物，却与分带特征息息相关，多分布在围绕母岩分异强、分布较远的边缘带中。因此母岩体特征、地质构造、岩石结构、矿物类型、蚀变、原生晕、化探重砂异常等为区内稀有金属矿的特征标志。

中文关键词: 稀有金属成矿规律陕西商丹地区

Abstract:Rare metal deposits in Shaanxi are mainly in Qinba area, and the main metallogenic type is pegmatite type. Most of previous studies are focused on pegmatite concentrated area of Shangnan and Danfeng counties (Shangdan for short). The rare metals mineralizations in this area are mainly rubidium and niobium (tantalum), secondly lithium, strontium, beryllium, etc, and the metallogenesis of pegmatite type rare metals is controlled by the conditions of regional structural, structural joint fissures and its country rocks. The pegmatite type rare metal mineral deposits in Shangdan region are located in the southern margin of the North Qinling Orogenic belt. The mineralization period is mainly in the early Paleozoic. Most of the pegmatites in this area exhibit a certain extent of zoning features in their own structure and the regional distribution. Moreover, the parent rock of the pegmatites can be found. Through the investigation of the two typical ore deposits, it could be concluded that the mineralization and enrichment of rubidium has no relationship with the zoning characteristics of pegmatite, but it is closely related to Rb-rich feldspar and muscovite in pegmatites. While other rare metal mineral deposits including lithium, niobium, tantalum, beryllium, etc. have their own independent minerals and thus their mineralizations are closely related to the zoning characteristics, and are mostly distributed in the marginal zones or the surrounding areas of the parent rocks with strong differentiation. Thus, the characteristics of the parent rock, regional structure, rock type of host rock, mineral type, alteration, primary halo, geochemical and heavy placer mineral anomalies are the important indicators for the Rare metal deposits in the Shangdan area of Shaanxi province.

keywords: rare metal metallogenic regularity Shaanxi province Shangdan area

文章编号： 中图分类号： 文献标志码：

基金项目:陕西省公益性地质调查专项项目（【2012】56）

作者	单位
杨文博1,2	(1. 陕西省地质调查规划研究中心，西安 710068； 2. 陕西省地质调查院，西安710054； 3. 西北大学地质学系，西安710069)
周海3	(1. 陕西省地质调查规划研究中心，西安 710068； 2. 陕西省地质调查院，西安710054； 3. 西北大学地质学系，西安710070)
宋公社2	(1. 陕西省地质调查规划研究中心，西安 710068； 2. 陕西省地质调查院，西安710054； 3. 西北大学地质学系，西安710071)
吴鹏2	(1. 陕西省地质调查规划研究中心，西安 710068； 2. 陕西省地质调查院，西安710054； 3. 西北大学地质学系，西安710072)
王强2	(1. 陕西省地质调查规划研究中心，西安 710068； 2. 陕西省地质调查院，西安710054； 3. 西北大学地质学系，西安710073)

Author Name	Affiliation
YANG Wenbo1,2	(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China 2. Shaanxi Institute of Geological Survey, Xi’an 710054, China 3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710069, China)
ZHOU Hai3	(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China 2. Shaanxi Institute of Geological Survey, Xi’an 710054, China 3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710070, China)
SONG Gongshe2	(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China 2. Shaanxi Institute of Geological Survey, Xi’an 710054, China 3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710071, China)
WU Peng2	(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China 2. Shaanxi Institute of Geological Survey, Xi’an 710054, China 3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710072, China)
WANG Qiang2	(1.Shaanxi Planning Research Center of Geological Survey, Xi’an 710068, China 2. Shaanxi Institute of Geological Survey, Xi’an 710054, China 3. Department of Geology, Northwest University, Northern Taibai Street 229, Xi'an 710073, China)

引用文本：
杨文博1,2,周海3,宋公社2,吴鹏2,王强2.陕西商丹地区花岗伟晶岩型稀有金属矿产成矿规律初探[J].有色金属（矿山部分）,2019,71(1):64-71.
YANG Wenbo1,2,ZHOU Hai3,SONG Gongshe2,WU Peng2,WANG Qiang2.A preliminary study on the metallogenic regularity of rare metal mineral resources of granitic pegmatite type in Shangdan area, Shaanxi Province[J].NONFERROUS METALS(Mining Section),2019,71(1):64-71.

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