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File Created: 19-May-2014 by Garry J. Payie (GJP)
Last Edit:  24-Mar-2022 by Nicole Barlow (NB)

Summary Help Help

NMI
Name SWAN CUBX, COPPER-BRECCIA, GOLDEN NEIGHBOUR 1-4 Mining Division Omineca
BCGS Map 094E035
Status Showing NTS Map 094E06E
Latitude 057º 19' 02'' UTM 09 (NAD 83)
Longitude 127º 00' 27'' Northing 6354450
Easting 620000
Commodities Copper, Gold, Silver, Lead, Zinc Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
H05 : Epithermal Au-Ag: low sulphidation
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Swan Cubx occurrence is located at an elevation of approximately 1760 metres in the southwest headwaters of the east arm of Saunders Creek, approximately 10 kilometres south-southwest of the west end of Toodoggone Lake.

The area lies within the Omineca-Cassiar Mountains at the southern end of the Toodoggone gold camp. It occurs within a Mesozoic volcanic arc assemblage that lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Neogene sediments, volcanics and intrusions bounded to the east by the Omineca Belt and to the west and southwest by the Sustut and Bowser basins.

Permian Asitka Group crystalline limestones are the oldest rocks exposed in the region. They are commonly in thrust contact with Upper Triassic Takla Group andesite flows and pyroclastic rocks. Takla volcanics have been intruded by Lower Jurassic granodiorite to quartz monzonite of the Black Lake Suite and are in turn unconformably overlain by or faulted against Lower Jurassic calc-alkaline volcanics of the Toodoggone Formation (Hazelton Group).

The dominant structures in the area are steeply dipping faults which define a prominent regional northwest structural fabric trending 140 to 170 degrees. In turn, high-angle northeast-striking faults (approximately 060 degrees) appear to truncate and displace northwest-striking faults. Collectively these faults form a boundary for variably rotated and tilted blocks underlain by monoclinal strata.

Prospectors with Stealth Minerals Ltd. were attracted to a train of malachite and azurite-stained boulders near the headwaters of the east tributary of Saunders creek. Hand-trenching through gossaned talus uncovered mineralized angular boulders of fractured and brecciated andesite flows well mineralized with chalcopyrite, pyrite, bornite and quartz as disseminations and breccia fillings. Epidote, chlorite and clay are the main alteration minerals. Hand trenches encountered broken sub-crop material.

In 2003, float samples (132901 through 132904 and 133641) from the area yielded values of up to 5.267 per cent copper, 1.21 per cent zinc, 0.480 per cent lead and 12.9 grams per tonne silver (Assessment Report 27442).

In 2004, sampling of trenches on the Cu-Bx zone yielded from 0.08 to 3.78 per cent copper, trace to 0.08 gram per tonne gold and trace to greater than 100.0 grams per tonne silver (Assessment Report 27760).

In 2006, a grab sample (6185) of propylitic-altered crystal tuff with chalcopyrite, taken to the northwest of the Main Cu-Bx zone, assayed 0.342 per cent copper (Assessment Report 28645).

Work History

During 1967 through 1969, Quebec Cartier Mining Co. completed programs of prospecting, geological mapping and geochemical sampling on the area and identified chalcopyrite float in the area of the Cu-Bx occurrence.

A summary of work by Stealth Minerals includes the following. The Swan Cubx (Copper Breccia) showing was discovered in 2003 by Stealth Minerals. In 2004, prospecting and sampling was conducted on all the mineral claims with most of the efforts given to three showings: the Copper Breccia, the Saunders Main and the Som occurrences. On the Swan Cubx (Copper Breccia) alone, 198 soils, 17 talus fines and 81 rock chip samples were collected. Work on the Copper Breccia showing also included soil and lithogeochemical surveys in addition to prospecting and included some shallow surface trenching in attempts to expose the underlying bedrock in the areas of high copper assay results. In 2005 by way of option agreement the Swan claims to Golden Dawn Minerals., prospecting, soil and talus sampling, and geophysics were conducted with concentrated efforts on the Copper Breccia, Som and Saunders showings. During the 2006 season, follow-up assessment work was conducted on the Copper Breccia, Golden Neighbour 2 and Saunders showings which included collecting 26 grab or chip samples and detailed geological sampling. Stealth conducted geological examination and sampling of parts of the Copper Breccia showing in 2007.

Refer to Golden Neighbor 2 (094E 152) for details of a common work History of the Golden Neighbour and Swan properties.

Bibliography
EMPR BULL 86
EMPR EXPL 1975-E163-E167; 1976-E175-E177; 1977-E216-E217; 1978-E244-E246; 1979-265-267; 1980-421-436; 1982-330-345; 1983-475-488; 1984-348-357; 1985-C349-C362; 1986-C388-C414; 1987-C328-C346; 1988-C185-C194
EMPR FIELDWORK 1980, pp. 124-129; 1981, pp. 122-129, 135-141; 1982, pp. 125-127; 1983, pp. 137-138, 142-148; 1984, pp. 139-145, 291-293; 1985, pp. 167-169, 299; 1987, pp. 111, 114-115; 1989, pp. 409-415; 1991, pp. 207-216
EMPR GEM 1971-63-71; 1973-456-463
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR MAP 61 (1985)
EMPR OF 2004-4
EMPR PF (Photogeologic Interpretation Map of the Northern Omineca area, (Oct. 1964), Canadian Superior Exploration Limited-in 94E General File)
GSC BULL 270
GSC OF 306; 483
GSC P 76-1A, pp. 87-90; 80-1A, pp. 27-32
W MINER April, 1982
N MINER October 13, 1986
N MINER MAG March 1988, p. 1
GCNL #23(Feb.1),#66(April 3), 1985; #165(Aug.27), 1986
IPDM Nov/Dec 1983
ECON GEOL Vol. 86, pp. 529-554, 1991
MIN REV September/October, 1982; July/August, 1986
WIN Vol. 1, #7, June 1987
Kimura, E.T., 43-101 Technical Report on the Swan Property for Golden Dawn Minerals Inc., January 15, 2007, filed on SEDAR website
Golden Dawn Minerals Inc. (2008-01-27): Geophysical and Diamond Drilling Report on the SWAN 1-18 Mineral Claims, Toodoggone River Area, British Columbia

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