- SMDI #
- 2494
- Current Showing Name
- Bar Au Showing
- Historical Showing Names
- Bar Au Showing
- Company Name
- Project Name
- UTM Easting (NAD83 Z13)
- 563871.6600
- UTM Northing (NAD83 Z13)
- 6227579.6600
- NTS Sheet
- 064D04
- TRM (Township-Range-Meridian)
- 83-13-2
- Primary Commodities
- Gold
- Associated Commodities
- Iron
- Discovery Type
- Outcrop Grab
- Status
- Occurrence: Primary Exploration
- Geological Details
- The Bar Gold Showing is located 150 m (492.1 ft) west of the west shore of East Dog Creek and approximately 300 m (0.19 mile) east northeast of a small lake which is locally named Hey Joe Lake.
The showing area, as mapped by C.T. Harper in 1985, is underlain by Unit G1e or the biotite±hornblende granite phase of the asymetrically zoned felsic Boundary Lake Pluton. The zonation in this pluton ranges from granite and leucogranite (subunits G1e and G1f), in the core, through monzonite to quartz monzonite (subunits G1c and G1d), in the intermediate zone, to gabbro, diorite, quartz diorite, and monzodiorite (subunits G1a and G1b) in the marginal zone. The zone to zone transition within the pluton varies from sharp to gradational. All of the zones in the Boundary Lake Pluton, except the gabbro-diorite zone, contain 5 to 30% by volume blue quartz phenocrysts which are 1 to 5 mm in diameter. The granitic and granodioritic zones in the pluton are crosscut by a series of up to 50 m (164.0 ft) wide aplite dykes and veins.
The rocks in the showing area have experienced polyphase deformation. The earliest folds encountered vary in geometry from isoclinal to arcuate. The geometry of these variably plunging folds is related to the size, shape, and proximity of adjacent plutonic bodies. A later northwest-southeast deformation produced a series of small-scale kink and crenulation folds and boudin necks. The third period of deformation resulted in north-south- and east-west-trending faulting and shearing. This widespread episode of deformation probably resulted in reactivation and movement along earlier formed faults.
The Bar Gold Showing is located west of the west bank of East Dog Creek at Kenwood grid coordinates 31+00S and 8+55W. The showing consists of a 075°-trending, 70° to 85°NW dipping, 2 to 3 m (6.6 to 9.8 ft) wide by 5 m (16.4 ft) long, mineralized brittle-ductile shear zone which cuts silicified and sericitized sheared quartz-eye granodiorite. The patchy silicification, sericitization, and K-feldspathization of the host granodiorite occurs only immediately adjacent to sulphide-bearing fractures.
The medium- to coarse-grained, fracture-fill style mineralization within the shear zone consists of blebs of up to 15% pyrite. The adjacent wallrock hosts up to 2% disseminated pyrite and trace amounts of chalcopyrite. Initial grab and chip samples taken at the showing returned the following values:
SAMPLE SAMPLE SAMPLE PPB OZ./TON SAMPLE
NUMBER TYPE WIDTH AU AU DESCRIPTION
_____________________________________________________________________________
KW90-309 grab ----- >1000 0.121 gossaned granodiorite
KW90-310 grab ----- >1000 0.099 sheared granodiorite: 5-10% py
KW90-311 grab ----- >1000 0.066 sheared granodiorite
KW90-312 grab ----- >1000 0.167 bleached, silicified granodior: py
KW90-313 grab ----- >1000 0.084 grey, silicif. granodior: 6% py
KW90-314 grab ----- >1000 0.057 grey, silicif. granodior: 2% py
KW90-315 chip 0.5 m 970 ----- grey, silicif. granodior: 2% py
KW90-316 chip 0.5 m >1000 0.029 silicified granodiorite: 2% py
KW90-317 chip 0.5 m >1000 0.061 grey, silicif. granodior: 5% py
KW90-319 chip 0.5 m >1000 0.049 altered, massive granodior: 3% py
KW90-320 chip 0.5 m >1000 0.067 altered, massive granodior: 10% py
KW90-321 chip 0.5 m 480 ----- grey, silicif. granodior: 2% py
A small, 045°/85°SW trending, mineralized shear zone in sheared and weakly sericitized quartz-eye granodiorite was located 180 m (590.6 ft) west of the Bar Showing at grid coordinates 31+40S and 10+75W. A grab sample of the 2 to 3% pyrite present (KW90-012) returned 480 ppb Au.
A second sheared quartz vein with chlorite-tourmaline alteration was discovered 1.0 km (0.62 mile) west of the Bar Showing on the south shore of West Dog Creek at grid coordinates 32+00S and 21+44W. The trace pyrite in the 178°/69°SW trending vein was grab sampled (KW90-156) and returned 400 ppb Au.
- Geological Domain
- La Ronge
- Host Rocks
- Host Minerals
- Pyrite
- Indicators
- Exploration History
- 12/15/1992 The NTS block was geologically mapped by A.R. Byers for the Department of Mineral Resources in 1948.
The area of the showing was covered as the Mincor Concession by the Mining Corporation of Canada Ltd. in 1951.
On 29 March 1980, the showing area was staked as CBS 4824 by Golden Rule Resources Ltd (70%) and Goldsil Resources Ltd (30%). In 1982, a SMDC-Goldsil-Golden Rule Resources joint venture partnership completed a grassroots gold exploration program of lake sediment sampling (AF 73P16-0039), mapping, prospecting and sampling (AF 73P16-0038), and a photo lineament study (AF 64D04-0089) that covered the general showing area.
In 1983, the partnership completed further mapping, prospecting, and soil sampling on the property (AF 73P16-0063). In 1984, they continued the program of mapping, prospecting, and sampling in the general showing area (AF 73P16-0065). This work led to the discovery of the mineralization described as the Kenwood Gold Showing or SMDI 2317.
Between 1984 and 1985, C.T. Harper geologically mapped the showing area at a scale of 1:20,000 for the Saskatchewan Geological Survey.
In 1987, SMDC completed ground EM and magnetic surveys over the Kenwood Showing (AF 64D05-0089). In the same year, detailed geological mapping, prospecting, and sampling were completed on the Kenwood Showing (AF 64D05-0126). This work failed to confirm the initial gold values encountered. At this time, Cameco recommended that no further work be completed on CBS 4824.
In 1988, Cameco completed reconnaissance geological mapping, prospecting, and rock sampling over that portion of the Kenwood grid which covers the Kenwood Showing (AF 64D04-0141). No significant values were returned.
In 1989, the partnership completed geological mapping, prospecting, and rock and bulk till sampling to the south of the Kenwood Showing along East and West Dog Creeks (AF 64D04-0153). This work resulted in the discovery of the mineralization which constitutes the MelMac and Bar gold showings.
On 7 February 1990, Goldsil Resources Ltd. (30%) and Golden Rule Resources Ltd. (70%) staked the showing area as S-101112. On 1 September 1991 the remainder of CBS 4824 was allowed to lapse.
In 1991, B.P. Scott completed a metallogenic map of NTS 64-D for the Saskatchewan Geological Survey. The MelMac and Bar showings are not recorded on this map.
- Production History
- Reserves and/or Resources