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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Mar-2012 by Garry J. Payie (GJP)

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NMI 104B12 Cu1
Name JOHNSON, JOHNSON RIVER, GLORIA Mining Division Liard
BCGS Map 104B073
Status Showing NTS Map 104B12E
Latitude 056º 44' 10'' UTM 09 (NAD 83)
Longitude 131º 35' 06'' Northing 6290995
Easting 341878
Commodities Silver, Lead, Copper, Zinc Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

Along the Iskut River and to the south, are Permian to Carboniferous greenstone to clastic sedimentary rocks of the Paleozoic Stikine Assemblage. These rocks are regionally metamorphosed to greenschist facies nearing the Coast Plutonic contact. Unconformably overlying these rocks are undifferentiated Upper Triassic andesitic volcanic to clastic sedimentary rocks that may be correlative with upper members of the Stuhini Group.

A small Eocene stock of the Coast Plutonic Suite occurs to the immediate east of the showing and the Middle Jurassic Warm Springs Mountain Pluton, consisting of monzodiorite to gabbro intrudes the strata several kilometres to the north.

The Johnson River showing is a well defined fracture vein zone, approximately 0.3 metre wide, varying locally in width up to 3.0 metres. The fracture vein system strikes 220 degrees dipping 60 degrees northwest, and consists predominantly of quartz, with lesser galena, chalcopyrite, tetrahedrite, sphalerite and pyrite. A representative sample of the better part of the main vein assayed trace gold, 370.9 grams per tonne silver, 3.43 per cent copper, 5.04 per cent lead and 1.47 per cent zinc (Geological Survey of Canada, Memoir 246, page 78).

Northwind Ventures Ltd. performed exploration on the Gloria 1-4 mineral claims which had been staked to cover the Johnson mineral occurrence. Work comprised geological mapping and rock, soil and stream sampling. The work was concentrated close to the newly- discovered granodiorite intrusive and on the southfacing slopes of the property. Favourable assay results for base metals and geochemically anomalous gold concentrations were found on the Gloria 1 and 3 mineral claims.

In 1989, Northwind Ventures Ltd. agreed to assign the Gloria 1 and 3 mineral claims to Daiwan Engineering Ltd in return for the settlement of a claim dispute in the Unuk River area.

In 1991 an airborne geophysical program was conducted on behalf of Collins Resources Ltd. The program consisted of 340 km of EM and magnetic surveying and showed a large number of intensely conductive zones within the stratigraphy.

In 1992, Universal Trident Industries Ltd followed with prospecting traverses across the most significant EM conductors and collected samples and mapped the geology. No significant economic mineralization was discovered, however anomalous pyrite mineralization was discovered in a number of areas in association with felsic intrusive rock. At the time, Daiwan Engineering Ltd was still the registered owner of the claims.

During the summer of 1992 a two man party flew to southside of Mt Choquette and prospected for 6 days. A one day traverse across the anomalous zones indicated on Mount Turner, and on the north side of Mt Choquette. Twenty three rocks and two silt samples were collected during the course of the mapping and prospecting program.

Bibliography
EMPR ASS RPT 18843, 21557, 21528, 22739
GSC MAP 9-1957; 311A; 1418A
GSC MEM *246, p. 77-78
GSC P 89-1E, pp. 145-154
Equity Preservation Corp. Compilation: Stewart-Sulphurets-Iskut, Dec. 1988, (Showing No. B8)

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