Whitewash

Porphyry copper (Cu-Mo) deposit in Queensland, Australia

Names and other identifiers

GMRAP ID 643
Alternate names Gordon's, Whitewash South
Tract name East Tasmanide - Central sub-tract (009pCu8004b)
Site status deposit

Geographic location

Country Australia
State or province Queensland
Geographic location 150.875, -24.8065
Geologic map unit 150.875, -24.8065
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Mo
Age (Ma) 235Ma
Age determination method Geologic inference
Age range 235 Ma
Age reference Horton (1978)
Minerals chalcopyrite, chlorite, clay, epidote, galena, limonite, K-feldspar, magnetite, malachite, molybdenite, neotocite, pyrite, sericite, sphalerite, zeolite
Associated rocks argillitic metasedimentary rocks, andesitic volcanic and intrusive rocks, granodiorite, quartz monzonite, granite, porphyritic andesite, trachyandesite, trachyte, aplite, felsite
Tectonic setting continental margin
Stratigraphic age Middle Triassic

Commodity and development information

Development status Prospect
Major commodities Cu
Minor commodities Mo
Trace commodities Ag, Re, W
Tonnage (Mt) 72Mt
Cu grade (%) 0.0987%
Mo grade (%) 0.038%
Ag grade (g/t) 1.192g/t
Contained copper 70,600t
Gold-Moly ratio -9999

Reference information

Comments Location, tonnage and grade of inferred resources from Geoscience Australia (2010) includes resources of Gordons breccia, about 1 km north of Whitewash; deposit is open to N, S, and at depth. Crackle breccia, quartz-molybdenite veinlets. Quartz-molybdenite-chalcopyrite veins; mineralized zone exposed, but associated pluton not exposed; rare disseminated mineralization marginal to veins. Ore A axis 0.8 km, ore B axis 0.4 km. Fracturing weak to moderate. Lower to middle part exposed. Multiple sets of sheeted sulphide-bearing quartz veins and veinlets, generally <10 cm wide. Secondary enrichment very weak. This prospect may represent the 'root-zones' of a porphyry system below the level at which major mineral deposits are expected.
Study area name Australia
References Brooks (1976); Horton (1978); Lacy (1980); Singer and others (2008); Aussie Q Resources Ltd. (2007); Aussie Q Resources Ltd. (2010); Geoscience Australia (2010); Geological Survey of Queensland (2010)
Site reference Bookstrom and others (2014)
Aussie Q Resources Ltd., 2007, Prospectus: Aussie Q Resources Ltd. Prospectus, p. 13–15, 37–44, and 47–56, accessed August 30, 2013, at http://www.aeonmetals.com.au/assets/aqr_prospectus_rda_final.pdf.
Aussie Q Resources Ltd., 2010, Aussie Q Resources Limited, ASX:AQR—An emerging molybdenum & copper producer: Aussie Q Resources Ltd. press release, 2010, 1 p., accessed May 9, 2011, at http://www.aussieqresources.com.au/. [Press release no longer available.]
Brooks, J.H., 1976, Departmental diamond drilling programme, Whitewash copper-molybdenum prospect, Monto: Queensland Government Mining Journal, v. 77, no. 891, p. 112–120.
Geological Survey of Queensland, 2010, Mineral occurrence and geology observations: Queensland Government, Department of Employment, Economic Development and Innovation (digital dataset on DVD).
Geoscience Australia, 2010, Australian mines atlas: Geoscience Australia Web page accessed October 20–December 27, 2010, at http://www.australianminesatlas.gov.au/.Horton, D.J., 1978, Porphyry-type copper-molybdenum mineralization belts in eastern Queensland, Australia: Economic Geology, v. 73, p. 904–921. (Also available at http://dx.doi.org/10.2113/gsecongeo.73.5.904.)
Lacy, W.C., 1980, Mineralization along the extension of the New England and Lachlan-Thompson fold belts in North Queensland, in Henderson, R.A., and Stephenson, P.J., eds., The Geology and Geophysics of Northeastern Australia: Geological Society of Australia, Queensland Division, Brisbane, p. 269–277.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.