摘要
赣南地区矽卡岩型白钨矿床常伴有大量萤石(氟化钙)晚期发育,本文通过Mermaid语法描绘了氟化物在含钨矽卡岩中的分布情况,并绘制了氟化物对白钨成矿过程影响的流程图,以便于更直观地理解氟化物在白钨成矿过程中的作用机制。本研究揭示了氟化物含量与白钨矿含量之间存在一定的正相关关系,说明了氟化物对白钨成矿过程起到了促进作用。矽卡岩成矿末期钠长石开始形成时,白钨矿由于氟化物的阳离子和围岩中的钙离子置换而开始沉淀,在硫化矿化阶段时,热水溶液中含有的大量氟化物影响钨离子的溶解、迁移和析出,形成稳定的氟钨酸盐,促进钨离子的迁移和富集,其中残余的氟离子与钙离子置换,促使硫化矿物沉淀,从而影响白钨的成矿,为地质矿产研究提供了新的视角。
The skarn type scheelite deposits in the southern Jiangxi region are often accompanied by a large amount of fluorite(calcium fluoride)developed in the late stage.This article describes the distribution of fluoride in tungsten bearing scheelite using the Mermaid syntax and draws a flowchart of the impact of fluoride on the scheelite mineralization process,in order to better understand the mechanism of fluoride in the scheelite mineralization process.This study reveals a certain positive correlation between fluoride content and scheelite content,indicating that fluoride plays a promoting role in the scheelite mineralization process.When sodium feldspar begins to form in the late stage of siliceous carbonate mineralization,scheelite begins to precipitate due to the exchange of fluoride cations and calcium ions in the surrounding rock.In the later stage of sulfide mineralization,a large amount of fluoride in the hot water solution affects the dissolution,migration,and precipitation of tungsten ions,forming stable fluorotungstate salts that promote the migration and enrichment of tungsten ions.The residual fluoride ions are exchanged with calcium ions,promoting the precipitation of sulfide minerals,Thus,it affects the mineralization of scheelite and provides a new perspective for geological and mineral research.
作者
王旗
WANG Qi(Jiangxi Provincial Geological Bureau Nonferrous Geological Brigade,Jiangxi Ganzhou,341000)
出处
《新疆钢铁》
2023年第4期34-36,共3页
Xinjiang Iron and Steel
