浙东南黄施岙钠长石岩石矿物学特征及矿床成因  

Mineralogical characteristics and genetic analysis of albite rocks in Huangshiao,southeastern Zhejiang

作　　者：栾进华 高原 徐厚倜[3] 杨仲可 郑绪忠 刘桂莲 LUAN Jinhua;GAO Yuan;XU Houti;YANG Zhongke;ZHENG Xuzhong;LIU Guilian(Chongqing Key Laboratory of Major Geological Events and Effects of Resources and the Environment,Chongqing Institute of Geology and Mineral Resources,Chongqing 401120,China;Chongqing Huadi Resources and Environmental Technology Co.,Ltd.,Chongqing 401120,China;The Eleventh Geological Group of Zhejiang Province,Wenzhou 325006,China)

机构地区：[1]重庆地质矿产研究院重大地质事件资源环境效应重庆市重点实验室,重庆401120 [2]重庆华地资环科技有限公司,重庆401120 [3]浙江省第十一地质大队,浙江温州325006

出　　处：《西北大学学报（自然科学版）》2024年第3期541-554,共14页Journal of Northwest University（Natural Science Edition）

基　　金：浙江省地质勘查基金项目([省资]2023006);重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX1375)。

摘　　要：通过对岩石化学、矿石结构构造、矿物组合特征等研究来分析浙东南黄施岙钠长石的岩石矿物学特征及矿床成因。研究认为,区内火山碎屑岩主要属酸性岩,岩石富碱(特别富钠),贫钙、铁、镁,属钙碱性系列,为高钾型或普通型钙碱性岩石。钠长石岩矿床的形成与早白垩世火山活动有关,是中酸性的含矿热液交代富钠火山岩而成。矿床的分布与区域性深大断裂有关,受火山构造控制,富钠的中酸性岩类是有利成矿母岩,火山构造边缘的环形裂隙带以及不同岩相的接触带是有利的导矿、容矿构造,富钠岩浆提供热源和物源。矿床成因属火山(岩浆)热液蚀变型钠长石岩矿床。To explore the mineralogical characteristics and genesis of sodium feldspar by studying its petrochemistry,ore structure,and mineral combination characteristics.The volcanic clastic rocks in the area mainly belong to acidic rocks,which are rich in alkali(especially sodium)and poor in calcium,iron,and magnesium.They belong to the calcium alkaline series and are high potassium or ordinary calcium alkaline rocks.The formation of sodium feldspar deposits is related to early Cretaceous volcanic activity,where medium acidic ore bearing hydrothermal fluids were replaced by sodium rich volcanic rocks.The distribution of mineral deposits is related to regional deep and large faults,controlled by volcanic structures.Sodium rich acidic rocks are favorable ore-forming parent rocks.The circular fracture zones at the edge of volcanic structures and the contact zones of different rock facies are favorable ore conducting and hosting structures.Sodium rich magma provides heat and material sources.The genesis of the deposit belongs to the volcanic(magmatic)hydrothermal alteration type sodium feldspar deposit.

关 键 词：钠长石岩 岩石化学 矿物学 矿床成因 

分 类 号：P579[天文地球—矿物学] P611[天文地球—地质学]