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fyi burraga

  1. 845 Posts.
    a bit of info for anyone interested .

    The Lloyds mine was an underground mine that worked a rich copper shoot intermittently from 1870 to 1927, reportedly producing over 500,000 tonnes at 3.7% Cu and was the focus of the NSW copper industry at the turn of the century.

    Substantial exploration was carried out at Burraga in the 1960’s to 1980’s. This work indicated a significant area of copper anomalism around the historical mine extending over 2 kilometres to the north of the old mine. This has been confirmed in places by drilling.

    However, the drilling was relatively sparse and where it was near the main shoot of the old mine the drilling was nearly all at shallow depths of less than 60 metres below the surface. There has been no testing of the deeper downplunge extensions of the rich shoot.

    Drillholes through previously worked areas in the near surface part of the main shoot (which were not assayed for gold) gave encouraging downhole intersections such as SP2
    34.1m @ 1.49% Cu (close to true width); SP1:6.1m @ 0.81% Cu and 6.1 m @ 1.00% Cu; UP5 9.45m @
    1.74% Cu (hole ended in mineralisation); UP9 9.45m @ 0.92% Cu; UP12 7.0m @ 0.83% Cu; UP15 3.35m @
    1.9% Cu; UP14 0.6m @ 4.0% Cu; UP2 4.88m @ 0.85% Cu; UP8 6.7m @ 0.63% Cu (hole ended in mineralisation).

    Holes were generally oblique to mineralisation, but the downhole intersections above are mainly close to true width.

    Past scout drilling of the widespread anomalism around the mine also gave some encouraging intersections
    such as 6.0 m @ 1.48% Cu and 16 g/t Ag from 150 m (no gold assays; hole P22) and 5.0 m @ 1.87% Cu, 28
    g/t Ag and 1.88% Zn from 59 m (no gold assays; hole P27), supporting the potential for new high grade
    deposits. Samples of smelter slag dumps from past mine treatment contain values of 0.8 -1.8% Cu and 0.1
    – 0.3 Au g/t.

    The mineralisation is hydrothermal Cu-Au style with a suggested deeper porphyry intrusive source, similar to
    most of the major discoveries in NSW over the last 20 years.
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