摘要
二道河膨润土矿床位于辽宁西部紫都台-于寺盆地北东缘义县期火山断陷盆地内,矿体赋存于义县组沉凝灰岩及流纹质熔结凝灰岩、珍珠岩等中酸性火山碎屑岩中。矿区共发育70多条层状、似层状膨润土矿体。主要矿石矿物为蒙脱石,具改型特征。浅部主要为钙基膨润土,200m标高以下向钠基膨润土转变。经综合研究认为,该矿床属典型的以后期表生风化淋滤型作用为主的复成因矿床。
Erdaohe bentonite deposit is located in the Yixian period vocanic graben basin,the north^esath of Zidutai^Yusi basin in the westen of Liaoning province .The ore body is within the sedimentary tuff and rhyolitic ignimbrite and pearlite which belong to intermediate^felsic volcanic rocks .There are more than 70 bedded ore-body bentonite ore body In the mining area. The primary mineral is montmorillonite with modified features. The calcium base bentonite mainly exists in the shallow, Changing to the sodium base bentonite In the following 200m elevation. After comprehensive study. The deposit belongs to the typical supergene period weathering leaching type dominated complex deposit.
出处
《化工矿产地质》
CAS
2015年第2期85-92,共8页
Geology of Chemical Minerals
关键词
膨润土矿床
地质特征
成因探讨
辽宁省二道河
bentonite deposit
Geological characteristics
genesis discussion
Liaoning erdaohe
