Physical properties of the Elura prospect, Cobar, NSW

Abstract

A petrophysical laboratory study was carried out on core samples from the Elura ore body and country rock. The ore, gossan and rock samples came from: the exploratory crosscut off the shaft; DDH holes E25 and E28; and DDH holes E8 and E20A respectively. Careful measurements were made using standard procedures. The properties measured and the results obtained are presented in the Table. A depth plot of some properties is given in the Figure. It should be noted that: the siltstone country rock is intensely weathered to about 90 m; beyond this the siltstone is very slightly weathered to about 150 m depth; the perched (?) water table is at about 80 m; the gossan samples are from the northern (siliceous) subsurface and southern (pyrrhotitic) surface and subsurface; the country rock samples are from the east of the orebody.