浙西北火山盆地铀矿主要类型、产出条件及找矿方向

PRINCIPAL TYPES,OCCURRENCE CONDITIONS AND PROSPECTING DIRECTION FOR THE URANIUM DEPOSIT IN VOLCANIC BASINS IN THE NORTHWEST OF ZHEJIANG PROVINCE

本文根据铀矿化特点，将浙西北火山盆地铀矿划分为３种类型，即沉积（成岩）型、热液脉型及沉积－热液叠加改造型（层控型）铀矿。系统地总结了不同类型铀矿的地质特征及产出条件，探讨了各类铀矿的成因联系及成矿模式，指明了火山盆地铀矿的找矿方向及途径。

In this paper, according to the characteristics of uranium mineralization, uranium deposits in volcanic basins in the northwest of Zhejiang Province are divided into three types,ry-hydrothermal superimposed reworking type (stratabound). The geological features and occurrence conditions of three types of uranium deposit are systematically summarized. Geneticrelation and metallogenetic model of these types of uranium deposit are discussed. Prospecting directions and approaches of uranium deposits in volcanic basins are pointed out.