The Doradilla Project is located approximately 45km south-east of Bourke in western New South Wales and is considered prospective for polymetallic tin, copper, silver, bismuth, indium and zinc mineralisation.
The area lies between the Lachlan and Thompson Orogens with mineralisation associated with the recently re-assigned Triassic aged Midway Granite, now considered by the Geological Survey of New South Wales to be analogous to the major tin granites in the New England Orogen.
The known mineralisation is hosted within the extensive Doradilla-Midway-3KEL skarn (‘DMK Line’) which marks a 40-100m wide zone extending over 16km along strike.
Previous exploration has focussed heavily on the tin content of the DMK Line, which comprises zones of oxide, supergene and primary tin mineralisation. Strong potential remains for the discovery of additional resources along the DMK-Line and additional skarn horizons within the project area.
In addition to tin, the Doradilla Project also represents a strong exploration target for copper, silver, bismuth, zinc and indium. In particular, the supergene tin- laterite deposits currently identified at 3KEL & Midway have the potential to contain economic levels of copper and zinc mineralisation based on the few holes that have been assayed for these metals. A considerable amount of previous drilling was assayed for tin only, with no systematic exploration carried out for any other metal.
Drilling by YTC Resources has confirmed the tin laterite mineralisation at the 3KEL deposit is also rich in copper, zinc, indium and bismuth. Significant results include:
|Hole||From (m)||To (m)||Interval (m)||Sn %||Cu %||Zn %||Bi ppm||In ppm||Comments|
|3KAC004||6||46||40||1.56||0.56||0.38||-||117||Mineralised to EOH|
|3KAC011||10||45||35||1.24||0.11||0.39||264||41||Mineralised to EOH|
|3KAC014||16||52||36||0.91||0.29||0.58||522||34||Mineralised to EOH|
Sky Metals intends to focus exploration activity on metallurgical test work on the Doradilla-Midway-3KEL mineralisation to prove up a processing flowsheet.