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File Created: 29-Aug-1991 by John L. Gravel (JLG)
Last Edit:  17-Nov-2020 by Garry J. Payie (GJP)

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NMI
Name GIN, GINSIDE Mining Division Liard
BCGS Map 104H061
Status Showing NTS Map 104H12W
Latitude 057º 40' 57'' UTM 09 (NAD 83)
Longitude 129º 55' 55'' Northing 6393745
Easting 444428
Commodities Copper, Gold, Silver, Lead, Zinc Deposit Types L03 : Alkalic porphyry Cu-Au
Tectonic Belt Intermontane Terrane Stikine
Capsule Geology

The centre of the Gin claims lies approximately 6.5 kilometres southeast of Eddontenajon Lake, 8.5 kilometres west of Kluea Lake and about 17 kilometres south of the village of Iskut. Deeply incised creeks and high rolling plains characterize the area as part of the Tanzilla Plateau.

The area is underlain by rocks of both the Lower Jurassic Hazelton Group and Upper Triassic Stuhini Group. Property rocks are described as porphyritic andesite flows interbedded with conglomerate (agglomerate?), siltstone and calcareous siltstone (Assessment Report 21204). Unconformably overlying these rocks to the southeast are fine to coarse clastics of the Upper Jurassic to Lower Cretaceous Bowser Lake Group. Bedding generally strikes northeast with 35 to 80 degree south dips. Faulting was not noted on the property. An east trending Early Jurassic pyroxene diorite stock intrudes about 3 kilometres to the south. Widespread but erratic propylitic alteration (chlorite-calcite-hematite) and oxidation (limonite) has been noted on the property.

Widely scattered, narrow pyrite veins occur erratically throughout the property. Trace amounts of chalcopyrite, arsenopyrite with rare galena and sphalerite are associated with the pyrite. Analysis of various grab and rock chip samples have given grades upwards of 1.24 grams per tonne gold, 45.1 grams per tonne silver, 0.8 per cent zinc, 0.3 per cent lead, 0.3 per cent arsenic and elevated amounts of copper (0.04 per cent), antimony (0.015 per cent) and mercury (0.006 per cent) (Assessment Report 21204).

The general area was explored intermittently for porphyry copper mineralization during the 1970s. In 1988, the Geological Survey of Canada carried out a regional stream silt sampling program (National Geochemical Reconnaissance, 1988). This was followed in 1990 when Dryden Resource Corp. staked the Gin 1-9 claims covering anomalous copper silt values obtained from drainages coming from colour anomalies where underlying geology was thought favorable for hosting copper-gold porphyry or peripheral gold mineralization. In 1990, Dryden completed detailed silt sampling (78 silts) of the immediate claim area along with contour soil sampling (92 soils) and minor prospecting (24 rock samples) along the upper portions of the property. In 1991, Dryden conducted soil and rock sampling along with minor prospecting along the north-facing slopes of the Gin property down into the Coyote Creek valley. In 2007, Gravity West optioned the property with the view of exploring for possible low-grade, bulk gold mineralization. The initial work consisted of soil sampling along three, 500 metre-spaced grid lines. Encouraging values in both copper and gold were obtained before a change in corporate management and direction led to dropping the option. In September 2009, Brett Resources Inc. optioned the Gin claims and before year end completed a small exploration program of ground magnetic and induced polarization geophysical surveying along with soil sampling. In 2010, a follow up exploration program including further ground magnetic and induced polarization geophysical surveying, prospecting, rock, silt, and soil sampling was conducted.

In 2013, over the course of two days, 61 widely spaced soil (500 metre-spaced lines with 100 metre-sample intervals), 7 rock, and 4 silt samples were taken, and two initial geological mapping traverses were completed. A zone of gossanous completely oxidized pyrite-chalcopyrite-bearing breccia was observed in the southeast of the property and was associated with slightly elevated copper values. Two fine-grained intrusive bodies striking eastward with shallow southward dips were observed and seem to be spatially associated with three anomalous soil samples and a third northward trending intrusive (monzonite) was associated with a single line of soils all returning greater than 80 parts per million copper. Two stream samples yielded anomalous (above 85 parts per million copper). Soils returned low to background values but anomalous (above 80 parts per million copper) samples occurred on the central to eastern-most lines. Rock samples taken on the property were low, however a sample of gossanous breccia, 200 metres south of the property boundary yielded 0.075 per cent copper (Assessment Report 34517).

In 2016 geological and geochemical work consisted of the collection of 51 soil samples, 3 silt samples and 9 rock samples. Although weakly pyrite mineralized and carbonate altered volcanic rocks were noted in outcrop and quartz-carbonate veining noted in rock float samples from Jackson Creek, assay results were generally quite disappointing and only very modest gold values were returned. Soil samples also failed to return any significant values in either copper or gold, except for one soil sample which returned 124 parts per billion gold near the claim boundary (Assessment Report 36509).

2017 exploration work consisted of the collection of 74 soil samples along Highway 37 and the Red Chris Mine road cuts in the northern portion of the property. Results of scattered weakly anomalous gold with a cluster of anomalous copper values (greater than 66 parts per million) over 250 metres, approximately 1.5 kilometres up the Red Chris Mine Road (Assessment Report 36908).

A 2018 geophysical review consisted of constructing base maps utilizing digital trim data purchased from LandData BC to generate a detailed topographical model, 2D inversion and 3D inversion of historic induced polarization and airborne magnetic data respectively. A 3D workspace was then constructed utilizing this information incorporating geophysics, geology, and geochemistry. The results of the geophysical review show several features of potential interest within both the magnetic and induced polarization dataset. The magnetic inversion shows a series of magnetic features encapsulated within a northeast trending corridor. These magnetic features appear to coalesce beneath the centre of the Gin property at depth (Assessment Report 37555).

2018 field work consisted of prospecting, geological and geochemical surveys. A total of 4 rock samples and 6 silt samples were taken by two geologists and one prospector. Silt sample highlights include weakly elevated zinc, molybdenum, and manganese. Rock sample highlights include 792151 and 792152 both returned weakly anomalous gold at 0.154 gram per tonne and 0.164 gram per tonne respectively, along with weakly anomalous arsenic. Sample 792151 returned 820 parts per million copper (Assessment Report 37875).

In September 2019, a program of airborne magnetic surveying was completed over 126 line-kilometres on behalf of Cazador Resources (Assessment Report 38575). The detailed survey was flown along north-south oriented lines at 100 metres spacings. The survey highlighted prominent east-west structure throughout the central portions of the surveyed area and three probable northwest trending structures. Magnetic highs located near the intersection of the structures were considered high priority target.

In November 2019, Roughrider Exploration Ltd. acquired 100 per cent interest in the Gin, Eldorado and Bonanza properties from Cazador Resources Ltd. (Roughrider Exploration Ltd. Press Release, November 8, 2019).

Bibliography
EMPR EXPL 1999-19-31
EMPR FIELDWORK 1976, pp. 71-73; 1994, pp. 343-358; 1995, pp. 155-174; 1996, pp. 283-290,291-297
EMPR OF 1992-1; 1992-3; 1996-4; *1997-3
EMPR PFD 883436
GSC OF 1005; 2241
PR REL Roughrider Exploration Ltd. Nov.8, 2019

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