Ferndale

Porphyry copper prospect in New South Wales, Australia

Names and other identifiers

GMRAP ID 4016
Alternate names Forest Reefs, Vulture
Tract name Macquarie (009pCu8002)
Site status prospect

Geographic location

Country Australia
State or province New South Wales
Geographic location 149.114561, -33.482301
Geologic map unit 149.114561, -33.482301
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range ~443–430 Ma (Benambran orogeny)
Age reference Crawford, Meffre and others (2007); Cooke and others (2007); Champion and others (2009)
Minerals actinolite, amphibole, biotite, bornite, carbonate, chalcocite, chalcopyrite, chlorite, epidote, diopside, garnet, galena, gold, K-feldspar, magnetite, pyrite, sericite, sphalerite
Associated rocks volcanic rocks, hornblende-biotite monzonite, quartz monzonite porphyry, contact metamorphic diopside-quartz-albite-amphibole-Kspar skarns
Tectonic setting island arc
Stratigraphic age Late Ordovician–Early Silurian

Commodity and development information

Development status Prospect
Major commodities Cu, Au
Trace commodities Mo
Gold-Moly ratio -9999

Reference information

Comments Intercept at 68 m at 0.3% Cu, 0.18 g/t Au. Location, intercept, and Cu and Au grades from Maynard (2003) report to Goldminco Corp.; also 27 m at 0.78 Cu, 0.39 g/t Au (Bird, 1999). Tonnage of 0.861 Mt, at 2.4 g/t Au. Tonnage and grade of measured + indicated gold resource of associated Forest Reefs gold mine from Geoscience Australia (2010). Skarn and sheeted quartz veins; mostly covered by Tertiary volcanic flows.
Study area name Australia
References Bird (1999); Maynard (2003); Geoscience Australia (2010); Crawford, Meffre and others (2007); Cooke and others (2007); Champion and others (2009)
Site reference Bookstrom and others (2014)
Bird, Damon, 1999, The Ferndale copper-gold project—A case study on exploring for Ordovician porphyry systems beneath Tertiary cover, in Exploration Under Cover, North Sydney, Australia, September 24, 1999, Proceedings: Sydney Mineral Exploration Discussion Group Web page, accessed November 29, 2010, at http://www.smedg.org.au/Sym99bird.htm.Champion, D.C., Kositcin, N., Huston, D.L., Mathews, E., and Brown, C., 2009, Geodynamic synthesis of the Phanerozoic of eastern Australia and implications for metallogeny: Geoscience Australia, Record 2009/18, GeoCat#68866, 222 p., accessed October 4, 2010, at http://www.ga.gov.au/products/.Cooke, D.R., Wilson, A.J., House, M.J., Wolfe, R.C., Walshe, J.L., Lickfold, Vanessa., and Crawford, A.J., 2007, Alkalic porphyry Au-Cu and associated mineral deposits of the Ordovician to Early Silurian Macquarie arc, New South Wales: Australian Journal of Earth Sciences, v. 54, p. 445–463. (Also available at http://dx.doi.org/10.1080/08120090601146771.)Crawford, A.J., Meffre, S., Squire, R.J., Barron, L.M., and Falloon, T.J., 2007, Middle and Late Ordovician magmatic evolution of the Macquarie arc, Lachlan orogen, New South Wales: Australian Journal of Earth Sciences, v. 54, p. 181–214. (Also available at http://dx.doi.org/10.1080/08120090701227471.)Geoscience Australia, 2010, Australian mines atlas: Geoscience Australia Web page accessed October 20–December 27, 2010, at http://www.australianminesatlas.gov.au/.Maynard, Allen J., 2003, Blayney porphyry gold-copper project, New South Wales, Australia, exploration license 5922 (including the Discovery Ridge and Ferndale prospects): Independent Geologist’s Report for Goldminco Corp., 29 p. (Available for download at http://www.sedar.com/.)