high grade surface copper

mkt cap $10m & $6m in the bank!

WARBURTON EXPLORATION PROGRAM IN FULL SWING
HIGH GRADE COPPER MINERALISATION IN SURFACE SAMPLES
Rubicon Resources Limited (Rubicon) is pleased to announce that high grade surface copper
mineralisation has been confirmed at the Warburton Copper Project in the course of regional
exploration work. The work to date continues to support the potential for the project to host
significant copper mineralisation.
• Selective sampling of outcropping copper occurrences average +5% copper
• Field mapping, regional geochemical sampling and regional geophysical surveys are ongoing
COMPLETED EXPLORATION
Exploration has focused on the granted tenements of the Warburton Copper Area (Figure 1) and has
included regional field mapping, sampling of known copper mineralisation, regional soil geochemical
and geophysical surveys and field location of previous exploration data.
Regional soil geochemistry on a 1,000 x 80m grid has been completed on granted tenements
E69/2192-2193 and 2252 (Figure 2). Some 3,000 samples have been collected and assays are pending.
A first phase of regional mapping has been completed over the prospective southern volcanicsedimentary
sequence on the heritage cleared geochemical lines on granted tenements (Figure 2),
Previous exploration by WMC Limited in 1968-71 focused on a 12 kilometre strike of this sequence.
Rubicon collected 14 rock chip samples over a number of the prospects defined by WMC to
characterise the existing copper mineralisation. Samples comprise rock chips of conglomerate-hosted
or vein-style copper mineralisation or selective sampling of spoils from old workings (Figure 3). All
samples carry visible malachite and azurite. Results range up to 15% copper and average in excess of
5% copper, with anomalous silver (Table 1).
Rubicon has successfully located WMC’s drill data over the Warburton Copper Area (Figure 2). WMC
drilled twelve diamond and approximately 125 shallow (<30m) open percussion holes. All diamond
drill results and significant percussion drill results (>five metre %) are given in Table 2.
In many of the rock chip samples collected, copper occurs as a matrix filling in poorly outcropping
stratabound conglomerate horizons (eg. Figure 3b). WMC’s diamond drilling focused exclusively on
the delineation of narrow vein-related copper mineralisation and these conglomerate horizons
represent an important bulk-tonnage target that have not been significantly tested by drilling and
therefore represent near-term drill targets. Furthermore, Rubicon’s tenements cover a 60km strike
of this prospective stratigraphy, of which only 12 kilometres was explored by WMC.