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Author: Admin | 2025-04-28
Magnetite, with the remaining rock being composed of sulphides (mostly pyrite), calcite, and black chlorite. Wrigglite-bedded skarn zones contain 20–50% magnetite, and compositional banding is preserved. Banded texture is intermediate between the massive and wrigglite-bedded skarn in magnetite proportion and appearance. Chlorite-rich, magnetite-poor volcaniclastic sandstone interbeds are present in some intervals within the skarn, and are typically The massive magnetite skarn is surrounded by a transitional, or peripheral skarn zone envelope containing typically The Big Cadia deposit has dimensions of 1,000 x 200 m, and a drill-tested depth extent of about 400 m. It consists of an oxide lens, and sulphide mineralisation at depth. Chalcopyrite and minor gold are closely associated with bladed hematite, magnetite and epidote (with lesser chlorite–quartz–calcite) replacements.The Little Cadia deposit has dimensions of 0.8 km x 300 m, and extends to about 150 m depth. The Little Cadia deposit is hosted by bedded, calcareous volcanic-derived sandstones that correlate to the same skarn host at Big Cadia (Packham et al., 1999). Gold and chalcopyrite are associated with epidote ± quartz in the interstices of bladed hematite–magnetite aggregates that have replaced the calcareous sandstone (Forster et al., 2004). Reserves at December 31, 2023 Gold Reserve estimates cut-off grade varies with level of copper, silver, and molybdenum credits. CategoryOre TypeTonnage CommodityGradeContained Metal Probable In-Situ (UG) 1,102,300 kt Gold 0.42 g/t 14,700 koz Probable In-Situ (UG) 1,102,300 kt Copper 0.29 % 7,100 M lbs Probable In-Situ (UG) 1,102,300 kt Silver 0.68 g/t 24,000 koz Probable In-Situ (UG) 1,085,100 kt Molybdenum 0.01 % 200 M lbs Measured Stockpiles 30,900 kt Gold 0.3 g/t 300 koz Measured Stockpiles 30,900 kt Copper 0.13 % 100 M lbs Indicated In-Situ (UG) 1,596,600 kt Gold 0.32 g/t 16,200 koz Indicated In-Situ (UG) 1,596,600 kt Copper 0.23 % 8,200 M lbs Indicated In-Situ (UG) 1,596,600 kt Silver 0.61 g/t 31,300 koz Indicated In-Situ (UG) 1,515,400 kt Molybdenum 0.01 % 200 M lbs Measured & Indicated Stockpiles 30,900 kt Gold 0.3 g/t 300 koz Measured & Indicated In-Situ (UG) 1,596,600 kt Gold 0.32 g/t 16,200 koz Measured & Indicated Total 1,627,500 kt Gold 0.32 g/t 16,500 koz Measured & Indicated Stockpiles 30,900 kt Copper 0.13 % 100 M lbs Measured & Indicated In-Situ (UG) 1,596,600 kt Copper 0.23 % 8,200 M lbs Measured & Indicated Total 1,627,500 kt Copper 0.23 % 8,300 M lbs Measured & Indicated In-Situ (UG) 1,596,600 kt Silver 0.61 g/t 31,300 koz Measured & Indicated In-Situ (UG) 1,515,400 kt Molybdenum 0.01 % 200 M lbs Inferred In-Situ (OP) 11,000 kt Gold 0.71 g/t 200 koz Inferred In-Situ (UG) 497,000 kt Gold 0.24 g/t 3,800 koz Inferred Total 508,000 kt Gold 0.25 g/t 4,100 koz Inferred In-Situ (OP) 11,000 kt Copper 0.52 % 100
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