吉林临江石门子硅藻土矿床地质特征及成因浅析  

Geological Characteristics and Genesis of the Shimenzi Diatomite Deposit in Linjiang City, Jilin Province

作　　者：王健[1] WANG Jian(Jilin Branch of China National Geological Exploration Center of Building Materials Industry,Changchun 130033,China)

机构地区：[1]中国建筑材料工业地质勘查中心吉林总队,吉林长春130033

出　　处：《中国非金属矿工业导刊》2022年第1期18-21,32,共5页China Non-Metallic Minerals industry

摘　　要：临江石门子硅藻土矿床赋存于新生界新近系马鞍山村组(N_(1)m)第四段(N_(1)m_(4)),矿层长1 400m,宽375~770m,平均厚度15.05m,I级品硅藻土矿石SiO_(2)87.13%~88.94%、资源量占2.19%;Ⅱ级品硅藻土矿石SiO_(2)84.79%~86.61%、资源量占26.90%;Ⅲ级品硅藻土矿石SiO_(2)71.13%~75.25%,资源量占70.91%。矿床成因属内陆淡水湖泊相生物沉积矿床。Shimenzi diatomite deposit in Linjiang occurs in the 4th member (N_(1)m_(4)) of neogene Maanshancun formation(N_(1)m),the length of the ore bed is 1 400m,the width is 375~770m,the average thickness is 15.05m,the grade I diatomite ore SiO_(2) 87.13%~88.94%,the resource is 2.19%,grade II grade diatomite ore SiO_(2) 84.79%~86.61%and resource amount 26.90%,grade III grade diatomite ore SiO_(2)71.13%~75.25%and resource amount 70.91%.The genesis of the deposit is an inland freshwater lacustrine biosedimentary deposit.

关 键 词：硅藻土 地质特征 矿床成因 临江市 

分 类 号：P619.265[天文地球—矿床学]