科技创新与应用2024，Vol.14Issue(9)：97-100,4.DOI:10.19981/j.CN23-1581/G3.2024.09.023
东秦岭地区木龙沟铁矿地质特征及找矿方向
韩彦伟1
作者信息
- 1. 长安大学 地球科学与资源学院,西安 710000
- 折叠
摘要
Abstract
As a typical skarn iron ore,Mulonggou Iron Mine has the same geological characteristics as the typical skarn iron ore.The surrounding rock is dolomite with high MgO content,and magnetite usually exists directly in magnesium skarn in the outer contact zone.These magnetite orebodies are mainly distributed in diopside-magnesite skarn and magnesite skarn,showing lenticular,layered or irregular distribution.In addition,magnetite orebodies are rarely seen in serpentinized dolomite marble.The size of magnetite bodies is usually positively correlated with the development level of surrounding magnesium skarns.The zircon U-Pb dating results indicate that the diagenetic age of the Mulonggou granodiorite is 146.1±0.5 Ma(n=21,MSWD=0.48),suggesting that the formation time of the deposit may be slightly later than 146.1 Ma.Wall rock alteration is the main prospecting indicator of this type of ore deposits.Therefore,understanding the geological characteristics and prospecting criteria of skarn iron deposits in this area can provide some help to understand the metallogenic model and prospecting direction.关键词
矽卡岩型/铁矿/找矿方向/木龙沟/地质特征Key words
skarn type/iron ore/prospecting direction/Mulonggou/geological characteristics分类
天文与地球科学引用本文复制引用
韩彦伟..东秦岭地区木龙沟铁矿地质特征及找矿方向[J].科技创新与应用,2024,14(9):97-100,4.
