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File Created: 07-Jan-92 by Keith J. Mountjoy(KJM)
Last Edit:  18-Apr-08 by Mandy N. Desautels(MND)

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NMI
Name RON 11, LAKE, LAKE 1-4, RON, RON 1-2, THUTADE, THUTADE 1-44, SHOWING 8, PRIORITY Mining Division Omineca
BCGS Map 094E006
Status Prospect NTS Map 094E02W
Latitude 57º 02' 26" N UTM 09 (NAD 83)
Longitude 126º 52' 11" W Northing 6323917
Easting 629257
Commodities Copper, Silver, Zinc, Lead Deposit Types K01 : Cu skarn
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Ron 11 showing is located approximately 8.2 kilometres west-northwest of the Kemess South occurrence (094E 094), some 260 kilometres north of Smithers. The showing lies within the Omineca-Cassiar mountains at the southern end of the Toodoggone gold camp. The showing is situated within a Mesozoic volcanic arc assemblage which lies along the eastern margin of the Intermontane Belt, a northwest-trending belt of Paleozoic to Tertiary 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 the granodiorite to quartz monzonite Black Lake Suite of Early Jurassic age and are in turn unconformably overlain by or faulted against Lower Jurassic calcalkaline 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.

The Thutade Lake area is largely underlain by andesite volcanics and related sediments of the Takla Group and small pockets of Asitka Group sediments. The major structures in the area are north- northwest striking faults, such as the Moose Valley fault and the Ingenika fault. Extensive exploration, including diamond drilling, was conducted on the ground around the Ron 11 showing between 1970 to 1984. Some nine mineral showings were found. The area hosts fault and/or skarn controlled copper, lead, zinc and silver occurrences throughout.

The Ron 11 showing is underlain by fine grained to coarse plagioclase and augite porphyritic, grey to greenish grey to maroon andesite, argillite, chert, quartzite, breccia and conglomerate of the Takla Group and the Early Jurassic Kemess pluton, a large intrusive body of porphyritic monzonite, quartz monzonite and granodiorite. Several bodies of marble have been mapped along the northeast corner of Thutade Lake belonging to the Asitka Group.

The Ron 11 showing consists of a silicified shear zone about 1.0 metre wide containing chalcopyrite (mainly altered to malachite), pyrite, sphalerite and galena. A halo of equal width consists of phyllic and chloritic alteration and limonitic staining.

A 1.5-metre chip sample from the Priority trench assayed 1.92 per cent copper, 0.038 per cent zinc, 0.008 per cent lead and 11.4 grams per tonne silver (Assessment Report 13022). Grab samples from the Priority trench analysed up to 3.9 per cent copper, 0.90 per cent lead, 1.12 per cent zinc and 169.37 grams per tonne silver (Assessment Reports 12401, 13022).

Bibliography
EM OF 2001-01
EMPR ASS RPT 2902, 2903, 10161, *12401, *13022, 16882, *18241
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
EMPR GEM 1971-63-71; 1973-456-463
EMPR GEOLOGY 1977-1981, pp. 156-161
EMPR PF (Photogeologic Interpretation Map of the Northern Omineca
area, (Oct. 1964), Canadian Superior Exploration Limited-in 94E
General File; Prospectus, (March 16, 1988), Hermes Ventures Ltd.;
Statement of Material Facts, (August 17, 1989), ECOS Resources
Ltd.)
GSC BULL 270
GSC OF 306; 483
GSC P 80-1A, pp. 27-32
ECON GEOL Vol. 86, pp. 529-554, 1991
GCNL #23(Feb.1), 1985; #165(Aug.27), 1986
IPDM Nov/Dec 1983
MIN REV September/October, 1982; July/August, 1986
N MINER MAG March 1988, p. 1
W MINER April, 1982; October 13, 1986
WIN Vol. 1, #7, June 1987

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