Several uranium anomalies in Yan'an Formation Unit V have been found in the north-east margin of Ordos Basin which are important for building the prospective uranium reserve base .

在鄂尔多斯盆地东北部，延安组第V成因 单元存在着多处 铀异常，这对铀的后备战略基地建设有重要意义。

Statistics show that medium-grained and fine-grained sandstone are the best lithologic hosts for uranium mineralization . So uranium deposits generally exist in the lower-middle part of braided distributary channel sand bodies in each vertical sequence unit .

统计发现，中砂岩和细砂岩是铀成矿的最佳载体，所以在每个垂向序列 单元中， 铀矿通常位于辫状分流河道砂体的中下部。

This paper describes a new method of reserve calculation of the soft sandstone uranium deposits for in situ leaching ── unit block method .

本文在介绍原地浸出采铀方法特点的基础上，着重讨论适宜用原地浸出方法开发的疏松砂岩 型 铀矿床储量计算方法& 单元工程影响矿块法（ 单元矿块法）。