蒙古国道尔脑德铀矿床地质特征及找矿方向

doi:10.11872/j.issn.1005-2518.2018.01.009

Abstract

Abstract:

Dornod uranium deposit is located in the marginal basin of Kunlun-Erguna microcontinent that is on the southern margin of the Siberian Plate.As an important component of Argun Mongolia uranium Province，the formation of the deposit is closely related to the Dornod volcano apparatus and it belongs to middle-low temperature volcanic hydrothermal deposit.According to geological survey of ore district，it is found that the deposit is mainly controlled by NE and NW faults and interbedded fractures，which shows pulse，net pulse and stratiform output.Ore minerals are mainly composed of coffinite，include uraninite，brannerite and uranium titanate，gangue minerals include iron sulfide，titanium oxide and partially deposited carbonaceous material.The rock alteration of typical F-Mo-U deposit are also developed in the deposit，such as argillization，silicification，hematite，and so on.The isotopic age of Dornod volcanic rocks measured by predecessors is 170~140 Ma，and indirect evidence is obtained from uranium mineralization superimposed on the Ulan Pb-Zn polymetallic deposit in this area，therefore，it is considered that the age of uranium mineralization in this area is likely to be early Cretaceous.The deposit is located in the volcanic-sedimentary basin with favorable metallogenic background and mineralized alteration and widely distributed struture，the uranium deposit has great prospecting potential.

Key words: volcanic hydrothermal type deposit, uranium deposit, geological characteristics, rock alteration, metallogenic conditions, prospecting direction, Dornod, Mongolia

CLC Number:

P619.14

ZHANG Pengpeng, LI Junjian, DANG Zhicai, TANG Wenlong, FU Chao, TIAN Jiepeng. Geological Feature and Prospecting Direction of Dornod Uranium Deposit in Mongolia[J].Gold Science and Technology, 2018, 26(1): 9-16.

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Geological Feature and Prospecting Direction of Dornod Uranium Deposit in Mongolia

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