On the Occurrence and Genesis of Rare Earth and Scandium in Jiuzigou Rock Mass of Fengxian County, Shaanxi Province
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摘要: 九子沟岩体为基性-超基性杂岩体，主要由磷灰石黑云母透辉石岩、正长岩及橄榄岩组成。稀土钪赋存于磷灰石黑云母透辉石中，岩体内部载体矿物为褐帘石及磷灰石。通过深部勘查发现，稀土钪矿在岩体内部是以独立矿物和类质同象的形式存在，在岩体风化壳中稀土钪以独立矿物、类质同象及离子状态的形式存在。矿石中稀土主要为轻稀土La、Ce、Pr、Nd、Sm及重稀土Gd、Y。稀土平均品位为0.07%，Sc平均品位为40×10-6。九子沟稀土钪矿成因类型为超基性岩型稀土钪矿，为幔源结晶型。形成时期为加里东期。研究稀土钪的赋存状态及成矿规律对本区稀土钪的地质找矿和选矿具有指导意义。Abstract: Jiuzigou rock-mass is a basic-ultrabasic complex, mainly composed of apatite-biotite-pyroxenite, syenite and peridotite. Rare earth and scandium occur in apatite-biotite-pyroxenite, and the bearing minerals are orthite and apatite. Through deep exploration, it is found that rare earth and scandium exists in forms of independent mineral and isomorphism in inner rock mass, while in forms of independent mineral, isomorphism and ionic state in weathering crust. The main rare earth elements in the ore are La, Ce, Pr, Nd, Sm and heavy rare earth elements Gd, Y. The average grade of rare earth (REO) is 0.07%, scandium (Sc) 40×10-6. The genetic type in Jiuzigou is ultrabasic rock of the rare earth and scandium deposit, and the mantle source crystallization type. It was formed during the Caledonian. The study of the occurrence state and metallogenetic regularity is of guiding importance to the exploration and processing of deposits of rare earth and scandium in this area.
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Key words:
- Jiuzigou rock-mass /
- rare earth and scandium /
- occurrence /
- metallogenetic regularity
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陕西省地质局第三地质队,陕西省凤县九子沟磷灰石矿床地质勘探报告[R].1976.
Geological team No.3 of Shaanxi bureau of geology, Geological Exploration Report of Jiuzigou apatite deposit in Fengxian County, Shaanxi Province[R].1976.
朱智华,云南牟定二台坡岩体中钪的发现及其意义[J].云南地质,2010,29(3):235-244.
ZHU Zhihua,The discovery and significance of Sc in Ertaipo Rock Body of Mouding,Yunnan[J].Yunnan Geology,2010,29(3):235-244.
杨宗振.凤县九子沟低品位磷矿综合利用研究报告[J].陕西地质,1994,12(2):94-97.
YANG Zongzhen,Comprehensive Utilization of low-grade Phosphate rock in Jiuzigou, Feng County[J].Geology of Shaanxi,1994,12(2):94-97.
陕西省地质调查院,中国区域地质志·陕西志[M].北京:地质出版社,2017.
Shaanxi Geological Survey Institute. Regional Geology of China,Shaanxi Province[M].Beijing:Geological Publishing House,2017.
樊会民,张嘉升,柏千惠,等.陕西秦巴地球化学分区及找矿意义[J].西北地质,2018,51(2):75-82.
FAN Huimin,ZHANG Jiasheng,BAI Qianhui,et al. Geochemical Landscape of Qinba Area in Shaanxi Province and Its Prospecting Significance[J]. Northwestern Geology, 2018,51(2):75-82.
肖军辉,王进明,王振.川西含稀土矿中钪的赋存状态研究[J].稀土,2018,39(2):40-47.
XIAO Junhui,WANG Jinming,WANG Zhen.Study on occurrence state of scandium of scandium-containing rare earth ore in western ofSichun Province[J],Chinese Rare Earths,2018,39(2):40-47.
孙民生,王德耀,董恒笔.1:5万辛家庄幅区域地质调查报告[R].陕西区调队.1996.
SUN Minsheng,WANG Deyao,DONG Hengbi,Regional Geological Survey Report of 1:50000 Xinjiazhuang Sheet[R]. Regional Geological Survey team of Shaanxi Province.1996.
朱笑青,王中刚,黄艳,等.磷灰石的稀土组成及其示踪意义[J].稀土,2004,25(5):41-45.
ZHU Xiaoqing,WANG Zhonggang,HUANG Yan,et al.Ree content and distribution in apatite and geological tracing significance[J]. Chinese Rare Earths,2004,25(5):41-45.
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