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A Summary of Major Mineral Resources, Mines and Projects, 2nd Edition |
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Major Mining Related Events |
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Operating Mine Life: 2003 to 2011 Decline commenced Oct 2003 to access resources. 7 year mine life as off Oct 2004. The |
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proposed mining method is uphole bench stoping with waste rock fill. Estimated cost of project ~A$90m. |
SHAFTS
Old workings shallow and generally less than 25m deep.
PITS
UNDERGROUND MINING METHODS
DECLINED SHAFTS/DRIVES
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Exploration decline is under construction to better define |
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resources. The Royal, Crown and Klondyke North shoots will be |
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mined from a decline access with the portal located to the east of |
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the Royal shoot. |
ML
80088
SEDIMENTARY HOLDINGS LTD
30.00%
ML
80088
NEWCREST OPERATIONS LIMITED
70.00%
ML
80089
SEDIMENTARY HOLDINGS LTD
30.00%
ML
80089
NEWCREST OPERATIONS LIMITED
70.00%
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Host Rock/Cover Sequences |
AUBURN SUBPROVINCE (ARCH)
Camboon Volcanics / LATE CARBONIFEROUS to EARLY PERMIAN
GENERAL ORE BODY MODEL
EPITHERMAL VEINS/PIPE/STOCKWORK
DETAILED ORE BODY MODEL
EPITHERMAL PRECIOUS METAL
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LOW SULPHIDATION |
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EPITHERMAL |
Veins commonly bifurcate.
EARLY PERMIAN
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Sedimentary Holdings NL in JV with Newcrest have discovered significant extension to a lode system located beneath historical |
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workings two kilometres to the west of the previous operations at Golden Plateau. |
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Gold mineralisation in the Klondyke lode lies between 150 and 400 metres below surface in a low sulphidation epithermal vein system |
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formed in and around a major fault zone. The vein systems comprises one or more multi-phase quartz-adularia-chalcedony |
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lodes, enclosed by stockwork veining in altered volcanics. The core zone of the mineralisation called 'Royal Shoot' (located below the old |
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Royal Standard workings) is being drilled at 50m x 25m spacing. |
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The company gave development approval in August 2002. The project will commence mining in late 2003 with decline access for mining |
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of the high-grade gold resources called The Royal, Crown and Klondyke North shoots. Existing plant will treat the ore. |
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Metallurgical testwork indicates that the mineralisation is amenable to conventional cyanide leach extraction after fine grinding with |
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expected average recoveries of approximately 94% for gold and 90% for silver. |