- SMDI #
- 2294
- Current Showing Name
- Vidgy Lake Au Showing
- Historical Showing Names
- Vidgy Lake Au Showing
- Company Name
- Cogema Resources Inc.
- Project Name
- UTM Easting (NAD83 Z13)
- 504376.8400
- UTM Northing (NAD83 Z13)
- 6160574.5300
- NTS Sheet
- 073P10
- TRM (Township-Range-Meridian)
- 76-19-2
- Primary Commodities
- Gold
- Associated Commodities
- Copper
- Discovery Type
- Drillhole
- Status
- Prospect: Primary Exploration
- Geological Details
- The showing occurs 500 ft (152.4 m) north of a small lake, which was locally named Great Plains Lake and later re-named Vidgy Lake, that is located 1.4 miles (2.25 km) east southeast of the northeast shore of Bassett Lake. The showing is approximately 2.5 miles (4.02 km) southwest of the Milner Lake Cu Showing (SMDI 0817) or 2.15 miles (3.46 km) northeast of the Triangle Lake Cu-Ni Showing (SMDI 0819).
The showing area is underlain by a series of silicified basic to intermediate meta-volcanics that have been intruded by gabbroic facies rocks of the Bassett Lake Pluton and dioritic to granodioritic facies rocks of the Beranek Lake Pluton. This suite of rocks are locally cut by small, discontinous shear zones that locally host small mineralized quartz veining.
The showing consists of an auriferous quartz vein hosted within a N50°W to N70°W striking, 100 m (328.1 ft) wide by over 2 km (1.2 mile) long zone of shearing that follows the contact between a dioritic to granodioritic intrusive and mafic meta-volcanics. Initial stripping exposed the 80°NE dipping, white to grey but locally yellow to light red quartz veining over a strike length of 21 m (68.9 ft), across a width of 1 to 2.5 m (3.3 to 8.2 ft) and to a depth of 1 to 3 m (3.3 to 9.8 ft). The quartz veining hosts up to 3% pyrite, minor chalcopyrite, arsenopyrite and visible gold as localized fracture fillings.
The two discovery grab samples were taken at the base of a east-west trending cliff of sheared andesite. Sample 288, which returned 900 ppb Au and 670 ppm Cu, was taken from a centimeter wide, shear-hosted quartz veinlet within meta-andesite and sample 352, which returned 290 ppb Au, was taken from a trachyte flow hosted quartz vein.
In 1988, Cogema grab and chip sampled the showing. The following values were returned:
SAMPLE SAMPLE PPB PPM PPM PPM PPM PPM SAMPLE
NUMBER TYPE AU AG AS CU ZN NI GEOLOGY
_____________________________________________________________________________
492RR-1403 grab 5,800 0.2 0.5 17 7 4 quartz in meta-volcan.
492RR-1404 grab 72,000 0.4 1.0 29 4 6 quartz in meta-volcan.
492RR-1405 grab 4,000 0.2 0.8 40 15 5 yellow quartz
492RR-1406 grab 100,000 0.5 1.0 28 2 4 grey quartz
492RR-1450 chip 1,210 0.0 0.0 0 0 0 meta-volcanic
492RR-1451 chip 4,500 0.0 0.0 0 0 0 quartz vein
492RR-1452 chip 21,200 0.0 0.0 0 0 0 quartz veining
492RR-1456 grab 29,200 0.0 0.0 0 0 0 quartz: V.G.
492RR-1457 grab 11,200 0.0 0.0 0 0 0 quartz:py,V.G.
492RR-1459 grab 18,800 0.0 0.0 0 0 0 quartz: V.G.
492RR-2009 chip 4,708 0.0 0.0 0 0 0 rose quartz
492RR-2010 chip 16,300 0.0 0.0 0 0 0 yellow quartz
492RR-2011 chip 1,530 0.0 0.0 0 0 0 ribbon quartz
492RR-2012 chip 8,202 0.0 0.0 0 0 0 quartz: Au
492RR-2013 grab 38,700 0.0 0.0 0 0 0 V.G. in quartz
492RR-2014 chip 6,710 0.0 0.0 0 0 0 ribbon quartz
492RR-2019 chip 8,540 0.0 0.0 0 0 0 yellow quartz
492RR-2020 grab 2,590 0.0 0.0 0 0 0 quartz: V.G.
Five lines of continous chip samples, taken at 4.0 m intervals, were completed across the vein. Fine-grained visible gold was visible in almost all sections sampled. The average result for each line is as follows:
WIDTH OZ./TON WIDTH OZ./TON
(M) AU (M) AU
__________________________________
2.0 0.26 2.0 0.05
2.7 0.14 2.0 0.03
2.5 0.18
In 1989, Cogema completed 8 drill holes on the showing. The following intersections were encountered:
DRILL HOLE INTERSECTION WIDTH PPB INTERSECTION
NUMBER (M) (M) AU GEOLOGY
__________________________________________________________________________
ONI-1 5.5 - 7.0 1.5 790 metavolcanic: 5-10% py-po
13.0 - 14.5 1.5 820 chloritic metavolcanic: 1-3% py
26.5 - 28.0 1.5 970 silicified metavolcanic: 1% py
68.5 - 69.5 1.0 580 metavolcanic: 8-10% po
135.0 - 136.5 1.5 760 metavolcanic: 3% po
138.0 - 138.7 0.7 2030 qtz veining in diorite: <1% po
ONI-3 83.0 - 84.5 1.5 420 metavolcanic: 1% po
ONI-5 22.5 - 23.5 1.0 990 intermediate volcanic: 7-10% po
ONI-6 25.5 - 27.0 1.5 550 fine grained diorite: <1% py
117.0 - 118.5 1.5 400 qtz veins in metavolcanic: py, cpy
ONI-7 8.2 - 10.0 1.8 470 metavolcanic: po, cpy
ONI-8 50.5 - 52.0 1.5 400 diorite: 1-2% po
55.0 - 56.5 1.5 730 metavolcanic: 1% py-po
75.5 - 77.0 1.5 1160 metavolcanic: 5% py-po. 2010 drill program of 8 drill holes. Hole VG10-01 (83/13, 6160709 N, 504252 E; 45 az./-45 incl.; 167.6 m length) with an intersection of 5080 ppm Cu/0.07 m from 68.68-68.75 m. Hole VG10-03 (6160685 N, 504268 E; 50/-45; 141.7 m) with intersections of 6177 ppm Cu, 5333 ppm Zn, >1000 ppm Pb, >100 ppm Ag, 300 ppb Au/1.49 m from 66.68-68.17 m in mafic volcanic with 10-20% po (appears to be a volcanic-associated massive sulphide horizon); 395 ppb Au/0.3 m from 76.66-76.96 m; 330 ppb Au/1.37 m from 126.19-127.56 m; and 300 ppb Au, 1453 ppm Cu/1.07 m from 127.56-128.63 m. Hole VG10-04 (6160685 N, 504268 E; 50/-60; 125 m) with intersections of 637 ppb Au/1.22 m from 10.67-11.89 m; 310 ppb Au/0.76 m from 18.52-19.28 m; and 586 ppb Au/0.99 m from 43.59-44.58 m. Hole VG10-05 (6160749 N, 504209 E; 40/-50; 214.9 m) with an intersection of 1000 ppb Au/0.56 m from 106.53-107.09 m. Hole VG10-06 (6160662 N, 504236 E; 90/-50; 169.2 m) with an intersection of 488 ppb Au, 2750 ppm Cu/0.74 m from 127.28-128.02 m. The gold intersections are generally associated with metavolcanic rocks with a few percent disseminated po-py.
- Geological Domain
- La Ronge
- Host Rocks
- Host Minerals
- Indicators
- Exploration History
- 8/23/1991 In 1965, the Great Plains Development Co. of Canada Ltd. conducted airborne EM and magnetic surveys over the area (AF 73P10-0018). This was followed by ground EM and S.P. surveys by the Don Fisher Syndicate later the same year.
In 1967, Great Plains staked CBS 622 over the area. Samples from the trenches returned the values listed above (AF 73P10-0016). In 1968 ground EM, magnetic and detailed geologic mapping and prospecting surveys were conducted in the area. Seven diamond drill holes, totalling 2137 ft (651 m), were put down but only minor (up to 25%) magnetite was intersected (AF 73P10-0021).
In 1970, Rajah Mines and Minerals Ltd. conducted airborne magnetometer and surface geological surveys over CBS 622 (AF 73P10-0072). Only minor pyrite, pyrrhotite and up to 45% magnetite were noted. In 1971, CBS 622 was allowed to lapse.
By 1982, the showing area had been staked as MPP 1127 by Colray Resources. In this year, Westar Resources Ltd. optioned the property and completed reconnaissance prospecting and soil sampling (AF 73P10-0077). No significant values were returned in the showing area. In 1985, Colray Resources completed an airborne VLF and magnetic survey over the showing (AF 73P-0003).
In 1986, D. Thomas re-mapped the NTS block at 1:20,000 for the Saskatchewan Geological Survey.
On 2 March 1987, Colray staked S-99385 over the showing within MPP 1127 and the claim was optioned to Cogema Canada. in April of 1987. Cogema completed a reconnaissance program of geological mapping, prospecting and rock and lake sediment sampling (AF 73P10-0106). Grab sampless 288 and 352 are the discovery samples for the mineralization described as SMDI 2294. In 1988, Cogema geologically mapped S-99385 at a scale of 1:63,360 and the Milner grid was soil sampled. Additional detailed prospecting, stripping, trenching and chip sampling were completed on the showing - which had been named the Vidgy Lake Gold Showing (AF 73P10-0136). The results of this sample program are reported above.
In 1989, Cogema completed ground UTEM, magnetic, and VLF-EM surveys over the Vidgy grid and drill holes ONI-1 to 8 on the Vidgy Showing (AF 73P10-0140). In 1990, Cogema completed a bulk till survey over the Vidgy grid (AF 73P10-0147). This work indicated an anomaly up-ice from the Vidgy Showing which could indicate further gold mineralization in the thick forest and overburden-covered area north of the showing.
On 1 May 1994, Uranerz Exploratioon and Mining Limited staked the showing as S-102832. In the same year, they completed geological mapping (scale of 1:1000), prospecting, and soil and rock sampling over the showing grid (AF 73P10-0159). The best grab sample result from the showing area was 30 ppb Au.
- Production History
- Reserves and/or Resources