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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  12-Apr-2012 by George Owsiacki (GO)

Summary Help Help

NMI 103P6 Pb6
Name VERONA, SILVER BOW, MCC Mining Division Skeena
BCGS Map 103P033
Status Prospect NTS Map 103P06W
Latitude 055º 23' 47'' UTM 09 (NAD 83)
Longitude 129º 28' 27'' Northing 6139005
Easting 469968
Commodities Gold, Silver, Zinc, Lead, Cadmium, Copper Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine, Bowser Lake
Capsule Geology

The Verona occurrence is located about 9.5 kilometres due south of Alice Arm. The area was prospected for base and precious metals in the early 1920s and mid 1960s.

The region is underlain by Middle Jurassic to Upper Cretaceous Bowser Lake Group argillite, shale, siltstone, greywacke and conglomerate. The sediments are intruded by Lower Tertiary granodiorite and diorite of the Coast Plutonic Complex and have been folded and contact metamorphosed up to biotite hornfels.

The showing comprises a system of quartz-carbonate-barite-sulphide veins which follow shear zones that are developed parallel to bedding in north-northeast striking, west dipping argillite. The veins are cut by porphyritic mafic sills that also follow the shear zones and all are displaced by northwest-trending faults. The vein system strikes 020 degrees for 50 metres and dips 53 degrees west. Primarily, the veins occur as inclusions of variable width and length in a 1.8 to 4.6 metre wide augite-plagioclase-olivine porphyritic andesitic sill. On the north end of the sill, a 0.23 to 0.71 metre wide quartz vein, containing near massive pyrite, pyrrhotite, sphalerite and galena, is exposed for 6.1 metres. A 0.61 metre chip sample taken across the north end of the vein system, likely across the vein with near massive sulphides, assayed 5.8 grams per tonne gold, 283 grams per tonne silver, 10.3 per cent zinc, 8.1 per cent lead and 0.3 per cent cadmium (Property File - Marshall Creek Copper Co. Ltd. Annual Report 1965, page 6).

West of this location, variably sulphidic quartz veins are reported to occur in the hangingwall and footwall of a 0.3 metre wide lamprophyre sill. Mineralization is also reported adjacent to a west striking shear zone, over a width of 0.76 metre, near the south end of this sill.

Bibliography
EMPR AR 1921-48; 1922-54; 1923-54; 1964-24-30; *1966-50; 1968-65
EMPR ASS RPT 29106, *30177
EMPR BULL 63
EMPR FIELDWORK 1985, pp. 219-224; 1988, pp. 233-240; 1990, pp. 235-243; 2005, pp. 1-4
EMPR MAP 8
EMPR OF 1986-2; 1994-14
EMPR PF (*Marshall Creek Copper Annual Report 1965; Geological Maps by Marshall Creek, 1967)
EMR MP CORPFILE (Marshall Creek Copper Co. Ltd.)
GSC MAP 307A; 315A; 1385A
GSC MEM 175, p. 85
GSC OF 864; 3272

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