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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  19-Jul-2013 by Nicole Barlow (NB)

Summary Help Help

BCGS Map 092P094
Status Prospect NTS Map 092P14W
Latitude 051º 58' 51'' UTM 10 (NAD 83)
Longitude 121º 20' 14'' Northing 5760212
Easting 614195
Commodities Copper, Gold Deposit Types L03 : Alkalic porphyry Cu-Au
K01 : Cu skarn
Tectonic Belt Intermontane Terrane Quesnel
Capsule Geology

The Peach-Melba showing is located on the west side of Peach Lake, approximately 21 kilometres northeast of Lac La Hache and is readily accessible from Highway 97 via a network of logging roads. The Peach-Melba showing is one of several copper showings on the current (February 2003) Ann and Dora claims (see also 092P 001, 002, 035, 115 and 153). All of these occurences are part of the Spout Lake copper-gold district, a group of porphyry and skarn deposits associated with Upper Triassic to Lower Jurassic alkaline intrusive rocks of the Spout Lake intrusive suite.

The Peach-Melba showing is underlain by andesites, basalts, calcareous tuffs and argillites of the Upper Triassic Nicola Group (Assessment Report 25368). Nicola Group rocks are intruded by the Upper Triassic to Lower Jurassic Spout Lake Intrusive complex, an alkalic intrusive suite ranging in composition from pyroxenite through monzonite to syenite, and from batholithic size to small intrusive plugs, dykes and breccia bodies. Granodioritic rocks of the Triassic to Jurassic Takomkane Batholith intrude Nicola rocks east of the property. Outliers of alkaline plateau basalts of the Miocene to Pleistocene Chilcotin Group are present in the general area.

No good description of the Peach-Melba showing is available, however Assessment Report 25368, states that "East Zone" (Peach-Melba showing) is an alkalic porphyry copper-gold system with fracture-controlled and disseminated pyrite-chalcopyrite mineralisation in potassic/propylitic altered andesitic flows and tuffs and monzonitic intrusive rocks. Diamond drill hole PL95-02 intersected porphyry-style disseminated mineralization over 77.4 metres grading 0.23 per cent copper and 0.23 grams per tonne gold. The intersection is part of a strong chargeability (induced polarization) anomaly which extends for 800 metres to the south to what has been called the "Northwest Zone" on the adjacent Ann #2 claim. The Peach-Melba showing also contains a moderately east-dipping 10 to 20 metre thick diopside-garnet skarn with minor magnetite and chalcopyrite.

Interest in the Spout Lake area was triggered in 1966 when the Geological Survey of Canada released the results of a regional airborn magnetic survey which outlined an annular magnetic anomaly 10 kilometres in diameter in the Spout Lake area and which included the area underlying the Peach #1 prospect. Subsequently in 1966 and 1967, Coranex Limited abtained anomalous results in follow-up stream sediment geochemical surveys and soil geochemical surveys in the area south of Peach Lake. Programs of geological, soil geochemical, magnetometer, induced polarization and prospecting surveys were undertaken in 1967 in the area south of Peach Lake, leading to the discovery of the Peach 1 and several other occurences. Asarco Exploration Company of Canada Limited optioned the property in 1969. Amax Potash Limited optioned the property between 1971 and 1973 and completed programs of geological mapping, geophysics and percussion drilling. G.W.R. Resources Incorporated acquired the property, and optioned the property to Asarco Exploration Company of Canada Limited in 1991. In 1993, G.W.R. Resources formed a joint venture with Regional Resources. Percussion and diamond drilling has been undertaken by Amax (1972), Asarco (1991)and the G.W.R./Regional Resources joint venture in 1994 and 1995. Induced polarization surveys by Amax (1972), Asarco (1991), and the G.W.R./Regional joint venture outlined a 1.5 kilometres long and 800 metres wide chargeability anomly that has been drilled by Amax (2 holes in 1972) and Asarco (6 holes in 1991). The G.W.R/Regional joint venture drilled seven holes in 1994 and 1995 in three separate campaigns. Additional drilling was completed by G.W.R. Resources in the winter season of 2002/3 (Stockwatch 2003-03-19).

In 2005, G.W.R. Resources Inc. completed two diamond drillholes at the Peach-Melba showing. Highlights include drillhole PM 05-01, which returned 5.5 metres grading 0.49 per cent copper and 0.59 grams per tonne gold (Assessment Report 28332).

EMPR AR 1966-126, 1967-126, *1968-155
EMPR GEM 1969-183, 1972-324, 1973-278
GSC MAP 1966-3, 1278A
PR REL GWR Resources Inc., Mar.18, 2003
STOCKWATCH 2003-03-19
Whiteaker Robin (1966), The Geology, Geochronology and Mineralization of the Ann Property: and Early Jurassic Alkalic Porphyry System near Lac La Hache, B.C., Honours B.Sc. Thesis, U.B.C.