河南安棚碱矿中自生沸石的产状及成因探讨

河南安棚碱矿为一蒸发成因的始新世重碳钠盐矿床。自生方沸石和钠沸石广泛发育在含碱段地层中，越靠近碱层沸石含量越高。两种沸石矿物分别以不同的产状分布于不同的岩石中。沸石与火山物质没有直接的联系。沸石的产状特征表明：化学沉积和胶体转变是方沸石最可能的成因，主要为准同生和成岩早期的产物。钠沸石主要为成岩阶段后期或成岩期后的产物。安棚磁矿的佛石矿物组合简单，产状复杂，反映了其独特的形成条件和环境。

OCCURRENCE AND ORIGINATION OF AUTHGENIC ZEOLITE FROM ANPENG ALKALI DEPOSIT,HENAN

Abstract Anpeng alkali deposit of Henan province records what is alum bicarbonate sedimentation in relation to evaporation suring the period of Eocene with wide development of authgenic zeolite, analcite and natrolite, in all beds of alkali member but the alkali bed. These two minerals occur as different accommalltions in the but both porportional in content to the distance they are away from the alkali bed, i.e. the closer the higher. Their characterful occurrences imply that origination has a most possible link rather with the chemical precipitation the colloidel conversion at the late or post sarge of diagenesis than with the exsistence of the volcanic material.Anpeng alkali deposit as a whole is simple in zeolite mineral assemblage but complicated in minerallzation attitude, reflecting the unique regime for their origination.