| 柏 杨.云南省澜沧地区风化壳型稀土矿化的新发现及找矿前景[J].地质与勘探,2021,57(4):762-783 |
| 云南省澜沧地区风化壳型稀土矿化的新发现及找矿前景 |
| New discovery of rare-earth mineralization of the weathering crust type and ore-search prospect in the Lancang area, Yunnan Province |
| 投稿时间：2020-12-07 修订日期：2021-04-14 |
| DOI：10.12134/j.dzykt.2021.04.005 |
| 中文关键词: 风化壳型稀土矿 花岗岩风化壳 灰岩风化壳 找矿前景 澜沧地区 云南 |
| 英文关键词: rare earth ore mineralization, granite weathered crust, limestone weathered crust,prospecting potential,Lancang area,Yunnan Province |
| 基金项目:云南省地质勘查基金项目（编号：D2017006）资助 |
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| 中文摘要: |
| 云南省澜沧地区位于滇西南地区，地处西南“三江”造山带南段，主体属班公湖-怒江-昌宁-孟连结合带南段，是云南省重要的铅锌银多金属矿分布区，以往在澜沧地区开展了诸多铅锌银矿调查工作未对澜沧地区稀土矿化进行详细工作，本次通过矿产地质调查工作发现有花岗岩风化壳型、火山岩风化壳型、灰岩风化壳型三种不同的稀土矿化类型，其中花岗岩风化壳型稀土矿化具有较大的含矿层位面积，估算稀土资源量达大型；灰岩风化壳型矿化为调查区新发现类型稀土矿化，矿化与土壤地球化学异常吻合，稀土总量品位较高，含矿层位具有连续性，已开展概略调查地区估算稀土资源潜力达中型以上，具有较好的稀土矿找矿前景，今后对研究区开展详细的验证工作，特别是对灰岩风化壳型稀土矿化区开展研究，全面探索矿化层位特征、含矿性特征，有望取得新的找矿突破。 |
| 英文摘要: |
| The Lancang area of southwestern Yunnan Province is located in the south section of the “Sanjiang” (“Three Rivers") orogenic belt.This area is a major distribution area of Pb-Zn-Ag polymetallic deposits in Yunnan Province,While no detailed study on rare-earth mineralization has been made in this area. This work attempted to fill this gap. Three different types of rare earth mineralization have been found in the geological survey: granite weathered crust type, volcanic rock weathered shell type and limestone weathered shell type. Of them, granite weathered crust type rare earth mineralization has a large ore bearing horizon area, with large estimated rare earth resources. The limestone weathered crust type mineralization is newly discovered one in the survey area, consistent with the soil geochemical anomaly, of which the total rare earth grade is high and the ore bearing horizon is continuous. It has been estimated that the potential of rare earth resources in the survey area is above medium-sized, which has a good prospect for rare earth ore prospecting. In the future, detailed verification work will be carried out in the study area, especially in the limestone weathered crust type rare earth mineralization zone. It is expected to make a new breakthrough in prospecting by comprehensively exploration of the characteristics of mineralized horizons and ore-bearing properties. |
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