First identified in the mid 1980's, Sybil’s epithermal system shares many geological affinities with the Pajingo Au Mine, 200km south.
Sybil is located 135km west of Townsville (Sunshine head office) and 140km north of Charters Towers. Epithermal gold was first identified at Francis Creek in 1986 through classic colloform, crustiform and cockade epithermal vein textures.
Sybil is a situated on a >40km long extensional structure (Sybil Graben) infilled with Permian-Carboniferous volcanics. The Sunshine tenure, covers the north of the structure, encompassing the shallowest portion of the low-sulphidation, high-grade system.
Initial rock chip sampling, stream sediment sampling and detailed mapping have been completed at several prospects. Historic drilling has largely focussed on Francis Creek and Quartz Ridge whilst the majority of Sybil remains highly underexplored.
Rock chip sampling and costeaning on the A and Main Vein at Francis Creek, returned rock chip grades of 907g/t Au and 262g/t Au. A bulk sample collected (1991) from the A Vein was processed through the Ravenswood Gold Mine and produced 961t @ 7.6g/t Au (235oz Au). No further mining or bulk sampling has occurred.
Small drilling campaigns have been completed at Francis Creek with best intersections to date occurring at shallow depths.
