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File Created: 11-Sep-1986 by Larry Jones (LDJ)
Last Edit:  20-Aug-2018 by George Owsiacki (GO)

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NMI 103J2 Au2
BCGS Map 103J008
Status Past Producer NTS Map 103J02E
Latitude 054º 01' 39'' UTM 09 (NAD 83)
Longitude 130º 35' 06'' Northing 5987744
Easting 396177
Commodities Gold, Silver, Copper Deposit Types I01 : Au-quartz veins
I02 : Intrusion-related Au pyrrhotite veins
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

The Edye Pass mine is located on Porcher Island about 37 kilometres south-southwest of Prince Rupert. The Porcher Island mine (103J 017) is 500 metres south of Edye Pass.

A quartz diorite stock of the Tertiary-Jurassic Coast Plutonic Complex intrudes chlorite schist and metasediments of probable Paleozoic-Mesozoic age. The stock is about 2.8 kilometres in diameter, with a 300-metre wide outer hornblende quartz diorite phase and a quartz diorite core. All rocks are intruded by mafic dikes.

Several east trending, steeply north dipping quartz veins, containing auriferous pyrite lenses, occur in the hornblende quartz diorite. The veins seldom exceed 120 metres in length and 1 metre widths. The veins occur in fractures and northeast shear zones related to flow lines within the northern part of an arch of flow layers having a 020 degree striking, 85 degree southeast dipping axial plane.

Small amounts of sericite, ankerite, calcite, chlorite and chalcopyrite occur in the veins. Under the microscope, tetradymite can be seen accompanied by free gold. Assays of a 1-metre wide vein yielded 29 grams per tonne gold and 10 grams per tonne silver (Minister of Mines Annual Report 1935).

The Edye Pass mine operated from 1919 to 1939. See also Porcher Island (103J 017).

Early exploration of Porcher Island began in 1916. Records show that mining from 1919 to 1939 resulted in 61,567 tonnes of ore yielding 639,914 grams of gold, 225,994 tonnes of silver and 4161 kilograms of copper from the Surf Point and the Edye Pass mines (103J 015). The mines produced ore from near-surface workings between 1919 and 1939, when Reward Mining Company built a 50 ton-per-day mill to replace a smaller structure that burnt down the previous year. The operation probably closed as a result of staff shortages induced by the war. The Surf Point mine operated between 1934 and 1937 (inclusive) and the Edye Pass mine operated from 1919 to 1939.

Between 1975 and 1994 several mining companies, including Tombil Mines, Banwan Gold Mines and Cathedral Gold Corporation conducted exploration and developmental work on the Porcher Island gold mine property. From 1975 to 1988, extensive exploration by E & B Explorations Inc. and Cathedral Gold Corporation resulted in a drill outlined mining resource at Porcher Island (103J 017). A deep drilling program indicated the potential for additional tonnages to a depth of 305 metres below surface in the AT zone.

The past-producing Surf Point/Edye Pass mines on Porcher Island is presently (August 2000) owned by Cathedral Gold Corp. and was, until recently, under option to Tetra Metals Ltd., who were unable to attract the financing.

In 2005, Cross Lake Minerals Ltd. entered into an option agreement to earn a 65 per cent working interest in the Porcher Island gold property from Imperial Metals Corporation. Cross Lake commenced a surface diamond drilling program to extend the area of known mineralization at the northern end of the AT zone (103J 017). Drilling in December 2005 totalled 571.9 metres of NQ2 core size in three holes to verify gold mineralization identified by previous operators on the eastern side of the AT zone.

EMPR AR 1917-44; 1919-42; 1922-46; 1923-46; 1924-46; 1925-67; 1930-70-72; 1931-36; 1932-49,50; 1933-41,42; 1934-B8,B9; *1935-A24,B2-B4; 1936-B56,B57; 1937-B3-B42; 1938-B4-B26; 1939-68
EMPR ASS RPT 5728, 6195, 7194, 14602, 15225, 15411, 16735, 17076
EMPR BULL 1 (1932), pp. 21,29,39; 3 (1932), p. 7
EMPR EXPL 1975-176,177; 1977-208; 1978-236; 1979-256,257; 1980-401; 1985-C375; 1987-C362; 1996-B8
EMPR GEM 1974-325
EMPR MAP 64; 65 (1989)
EMPR OF 1992-1
EMPR PF (*Nelson, N.E. (1935); Dolmage, V. (1936); Waterland, T.M. (1939); Smith, A. (1943); James, G.L. (1974); Porcher Island Gold Corporation Website (Nov.1997): The Porcher Island Gold Project, 4 p., in 103J 017)
EMR MIN BULL MR 223 B.C. 293
EMR MP CORPFILE (Reward Mining Company, Limited; Porcher Island Gold Mines, Limited; E & B Explorations Ltd.)
GSC MAP 12-1966; 1385A; 1472A
GSC MEM 394, p. 98
GSC P 66-33, pp. 22,23
GSC SUM RPT 1922 Part A, pp. 27,28
CANMET IR 805 (1939), pp. 151-155
CIM Jubilee *Vol. 1948, pp. 94-99
N MINER Jan.18, 1988
W MINER Aug., 1946, pp. 40-42
PR REL Cross Lake Minerals Ltd., Nov.*22, 2005; Feb.*7, 2006
Falconbridge File