Final Report on EL 6810 (Bullo River)

Abstract

The initial exploration programme conducted in the first year of tenure within EL 6810 yielded a number of chromites, probably sourced from the Moonlight Valley Tillite. Some of the samples were found to contain garnet and particulate gold grains. the chromites were folowed up with a loam grid over an area of known tillite exposure. Particulate gold results were followed up with bulk cyanide leach stream sampling. Results showed no evidence of primary mineralisation. It is reasonably clear that the tillite is randimly releasing chromite and particulate gold. TM imagery and airphoto interpretation in the second year of tenure helped to confirm the tillite as the source of the chromites and to delineate the true extent of the unit. From this work it was found that the chromites were released by the MVT and that this unit is more widespread than is mapped. It is unlikely that the primary source of the chromites lies within the tenement area, and as such, EL 6810 is no longer of interest as the potential host of a primary diamondiferous source.