Porphyry copper deposit in British Columbia, Canada

Names and other identifiers

Alternate names Comet-Davenport
Tract name Intermontane Island-Arc Cu-Au (003pCu2002x)
Group name Afton-Ajax Group
Included sites Audra, Comet-Davenport, Truth; Group includes Afton, Ajax JV, Big Onion, DM-Audra-Crescent, Galaxy, Iron Mask, and Rainbow deposits and Ace, Admiral Dewy, Crescent, Fargo, Kimberly, and Python prospects.
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -120.485815394, 50.664705982
Geologic map unit -120.485815394, 50.664705982
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 204Ma
Age determination method U-Pb zircon
Age range 204 Ma
Age reference unknown
Minerals bornite, chalcopyrite, covellite, magnetite, malachite, pyrite
Associated rocks diorite, diorite breccia, intrusive breccia, monzodiorite
Tectonic setting island arc
Stratigraphic age Late Triassic

Commodity and development information

Development status Prospect
Major commodities Cu, Au
Tonnage (Mt) 109Mt
Cu grade (%) 0.203%
Au grade (g/t) 0.1g/t
Contained copper 221,000t
Gold-Moly ratio -9999

Reference information

Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Sinclair (2007)
Site reference Mihalasky and others (2011, revised 2013)
MINFILE BC, 2009, MINFILE Mineral inventory: British Columbia Ministry of Energy, Mines and Petroleum Resources, MINFILE database, total records 12,523, accessed December 2009, at
Sinclair, W.D., 2007, Porphyry Deposits, in Goodfellow, W.D., ed., Mineral deposits of Canada—A synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods: Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5, p. 223–243.