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File Created: 07-Jul-1989 by Laura L. Duffett (LLD)
Last Edit:  17-Feb-2015 by Garry J. Payie (GJP)

Summary Help Help

NMI
Name CHRISTINA, CHANCE Mining Division Omineca
BCGS Map 093L057
Status Showing NTS Map 093L10E
Latitude 054º 34' 58'' UTM 09 (NAD 83)
Longitude 126º 44' 22'' Northing 6050714
Easting 646089
Commodities Silver, Gold, Zinc, Copper, Lead Deposit Types I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The Christina occurrence is part of the Grouse Mountain (Cornucopia - 093L 251) property. The area is underlain by Lower Jurassic Hazelton Group rocks (Telkwa Formation), comprised mainly of a uniform, fine-grained maroon tuff overlain by a sequence of tuff, lapilli tuff and tuffaceous greywacke. The tuffs range from dark grey to green to maroon and are fine-grained, thinly bedded, laminated or massive. These are underlain by massive green andesitic to dacitic flows.

Locally the volcanics are altered hosting abundant mica, chlorite and clay with less common epidote.

The Christina showing occurs in the northeastern part of the claims around the edge of a small swamp. It is comprised of a silicified stringer zone within altered tuff. Mineralization exposed in the trenches consists of sphalerite, tetrahedrite with minor pyrite and galena. Three grab samples from the mineralized exposure averaged 0.17 grams per tonne gold, 165.6 grams per tonne silver, 0.14 per cent copper, 1.9 per cent zinc and 0.04 per cent lead. A fourth sample assayed 1.58 grams per tonne gold, 1165.0 grams per tonne silver, 0.87 per cent copper, 1.91 per cent zinc and 0.09 per cent lead (Assessment Report 13364, page 16).

In 2010, rock chip sample GM10AR-53 at the Christina showing showed 0.1 to 5 centimetres wide sheeted quartz veins cutting quartz-carbonate-ankerite-limonite altered volcanic-sedimentary rocks. The showing is poorly exposed because of overburden, but there is a considerable amount of sheeted quartz present as float in overburden.

WORK HISTORY

In 1984, Adriatic Resources carried out 26 diamond drill holes, (total depth of 1170 metres), geological mapping, geochemical soil surveys, and geophysical VLF-EM surveys.. The results indicate relatively higher grades of silver bearing mineralization are associated with relatively higher copper-lead-zinc values. Relatively higher gold values have a positive correlation with increased copper percentage. Due to a lack of 3D data and understanding of the distribution of mineralization, it is not known whether these intervals represent true width. Work done by Adriatic Resources in 1984 indicates the presence of variable and relatively narrow drill intercept intervals (0.07 to 0.76 metre) of elevated silver values and lesser gold associated with copper-zinc bearing minerals over a vertical distance of less than 30 metres and strike length of less than 200 metres on the Julia (aka Last Chance) quartz-sulphide fissure vein occurrence. Drilling occurred mainly on the Julia but also on the Christian and Paola showings (Assessment Report 13364).

In 1991, AIC International Resources Corporation drilled a total of 264 metre was in two holes. The IP survey on the Chance Property (Julia) outlined a 1350 metre long chargeability anomaly up to 650 metres wide open to both the north and south. Geophysics appears to have been done on the Julia and the Paola areas and immediately south of the Christina (093L 295).

In 2009, Torch River Res surveyed a total of 7.5 km grid, lines (166 soil samples, 600 magnetometer readings, and 4 rock chip samples), covering a 1 by 2 km area (Assessment Report 31107). A 2000 meter long by 1000 metre wide area was surveyed by east-west oriented grid lines spaced at 200 meters apart. A number of soil anomalies resulted from the work, one being near the Christina trench area (093L 295). The 2009 geophysical survey carried out by Torch River Res consisted of 7.5 kilometres of total field magnetic survey. A total of 1 out of the 7 anomalous soil samples coincides with total field magnetic anomaly.

In 2010, rock chip/soil sampling, mapping, and surveying were carried out (Assessment Report 31644). A 2000 metre long by 1000 metre wide area was surveyed by east-west oriented grid lines in 8 follow-up soil anomaly zones. The 2010 soil grids focused on areas adjacent to intrusive contacts that returned anomalous copper-zinc-silver-gold values in the 2009 soil survey. A total of 34 soil samples and 9 rock chip samples were taken. Rock chip sample from the Christina showings (093L 295) (GM10AR-53) contains elevated gold-arsenic, and two rock chip samples from the Paola showings (093L 296) contain elevated copper-silver (GM10AR-55) and elevated lead-zinc (GM10AR-56). Results from geochemical analysis of 54 soils taken in 2010 indicate there a few weak strength anomalies in zinc-silver-gold-arsenic present.

Refer to Grouse Mountain (Julia) (093L 251) for further details of the property work history which includes Christina.

Bibliography
EMPR EXPL 1981-227; 1983-444; *1984-328; 1985-C314
EMPR FIELDWORK 1988, pp.195-208
EMPR GEM *1972-397-417,Fig. 49
EMPR MAP 69-1
GSC BULL 270
GSC MAP 671A
GSC OF 351

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