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File Created: 25-Mar-2020 by Karl A. Flower (KAF)
Last Edit:  16-Jun-2021 by George Owsiacki (GO)

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NMI
Name RON 10-11, KEMESS CENTRE, RAT Mining Division Omineca
BCGS Map 094E007
Status Prospect NTS Map 094E02W
Latitude 057º 01' 12'' UTM 09 (NAD 83)
Longitude 126º 46' 05'' Northing 6321827
Easting 635499
Commodities Copper, Zinc, Gold Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine, Plutonic Rocks
Capsule Geology

The Ron 10-11 (Kemess Centre) occurrence is located at an elevation of approximately 1520 metres on a broad southwest-facing slope, approximately 1.5 kilometres northwest of Kemess Lake and 2.0 kilometres southeast of the southern end of Duncan Lake, about 188 kilometres northwest of the community of Germansen Landing.

The Toodoggone district lies within the eastern margin of the Intermontane Belt and is underlain by a northwest trending belt of Paleozoic to Paleogene sediments, volcanics and intrusions covering an area of 90 by 25 kilometres. The basement rocks are Proterozoic metasedimentary equivalents of the Ingenika Group. These rocks are unconformably overlain by volcanic and sedimentary units of the Devonian to Permian Asitka Group, which are in turn overlain by Upper Triassic basaltic to andesitic flows, volcaniclastics and minor limestone of the Stuhini Group. Volcaniclastic rocks of the Lower Jurassic Hazelton Group and rhyolitic to dacitic flows, intrusions and volcaniclastics of the Lower Jurassic Toodoggone Formation (Hazelton Group) overlie the Stuhini Group. Further to the west, nonmarine sediments of the Cretaceous Sustut Group overlie the volcanic strata and form the western margin of the district.

The Early Jurassic Black Lake Suite, of quartz monzonitic to granodioritic composition, has intruded the older strata in the central and eastern parts of the region and forms the eastern margin of the Toodoggone district. Within the district, syenomonzonitic and quartz feldspar porphyritic dikes may be feeders to the Toodoggone Formation.

The dominant structures in the area are steeply dipping faults that define a prominent regional northwest structural fabric trending 140 to 170 degrees. 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.

At the Ron 10-11 showing, as identified by diamond drilling, propylitized volcanics (pyroxene lapilli crystal tuff, ash tuff and andesite) and quartz monzonite have been intruded by diorite and monzonite dikes and host disseminations and fracturing fillings of pyrite and trace chalcopyrite. Variable amounts of carbonate, sericite, biotite, magnetite and hematite are also reported. Rare sphalerite-chalcopyrite veins have also been identified associated with shear zones.

In 1992, drillhole 92-61 yielded 1.19 grams per tonne gold over 1.9 metres, whereas another drillhole (92-58) located approximately 500 metres to the southwest averaged 0.369 gram per tonne gold and 0.03 per cent copper over 70.0 metres (Assessment Report 22885).

In 2000, diamond drilling yielded intercepts of 0.114 and 0.132 per cent copper over 34.45 and 8.80 metres, respectively, including 0.247 per cent copper with 0.17 gram per tonne gold over 1.8 metres in hole KC-00-04 (Assessment Report 26486). In 2003, a diamond-drill hole (KC-03-02) intersected a granodiorite hosting a sphalerite-chalcopyrite vein in a shear zone, yielding 1.335 per cent copper and 1.98 grams per tonne gold over 0.7 metre (Assessment Report 27365).

The area has been historically explored in conjunction with the nearby Kemess North developed prospect (094E 021) and the Kemess South past-producing mine (094E 094).

During 1966 through 1971, Kennco Explorations Ltd. completed programs of geochemical sampling and geological mapping on the area immediately west as the Kemess 1-100 claims. In 1975 and 1976, Getty Mines Ltd. examined the property and completed programs of soil sampling and geological mapping on the area immediately west.

During 1986 through 1989, El Condor Resources Ltd. completed programs of rock and soil sampling, geological mapping, trenching and a 14.1 line kilometre ground magnetic survey on the area immediately west as the New Kemess 1-2 claims.

In 1990 and 1991, El Condor Resources Ltd. conducted programs of geological mapping, geochemical sampling and a 201.0 line kilometre induced polarization survey on the area as part of the Kemess property. In 1993, four diamond-drill holes were completed on the Ron 10 and 11 claims. In 1999, Royal Oak Mines Inc. completed a series of 16.0 line kilometre ground geophysical surveys on the area.

During 2000 through 2011, Northgate Minerals Corp. completed further programs of prospecting, geological mapping, geochemical sampling, ground geophysical surveys and diamond drilling on the Kemess and Kemess East properties. In 2000, Northgate completed a 6.5 line kilometre grid of ground geophysical surveys, and four diamond-drill holes totalling 1015 metres, on the area as the Kemess Centre zone. In 2003, Northgate completed a drilling program of 25 diamond-drill holes totalling 7264.7 metres on the Kemess property, including two diamond-drill holes on the Kemess Centre zone. Further diamond drilling was conducted in 2004.

During 2013 through 2017, AuRico Gold Inc. examined the area as part of the Kemess and Kemess East properties.

Bibliography
EMPR ASS RPT 1705, 5748, 6069, 16333, 19962, 21539, 22280, *22885, 26101, *26486, *27365
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; 1983, 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
EMPR GEM 1970-187, 1971-63-71; 1973-456-463; 1974-310
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR OF 2001-01
GSC BULL 270
GSC OF 306; 483
GSC P 80-1A, pp. 27-32
ECON GEOL Vol.86, pp. 529-554, 1991

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