Core analysis of a low permeable sandstone uranium deposit

Push-pull capability is an important factor in in-situ leaching operations. Some microscopic properties of cores in connection with permeability of a low-permeable and heavy calcium cementation sandstone uranium deposit in Inner Mongolia are studied. Core analysis results indicate that the backbone of the sandstone deposit is made of quartz, potash feldspar and albite, with heavy calcium cementing. Clay content is relatively high, which is mainly composed of montmorillonite and chlorite. Blind pore volume is relatively big, and average diameter of pore throat is comparatively small. The pore structure results in low permeability of the uranium deposit. In addition, the pore structure and clay composites will lead to possible damage by a variety of fluids. (authors)