Details


SMDI #
0889a
Current Showing Name
Fork Lake Gold Deposit (portion of); Kahn #18 Gold Vein; Kahn #28 Gold Vein
Historical Showing Names
Fork Lake Gold Deposit (portion of); Kahn #18 Gold Vein; Kahn #28 Gold Vein
Company Name
Cameco Corporation, Shore Gold Inc.
Project Name
UTM Easting (NAD83 Z13)
544974.3600
UTM Northing (NAD83 Z13)
6204582.9700
NTS Sheet
073P16
TRM (Township-Range-Meridian)
81-15-2
Primary Commodities
Gold
Associated Commodities
Silver
Discovery Type
Outcrop Grab
Status
Deposit: Post-Production
Geological Details
The showing consists of two gold-bearing veins exposed on the KAHN 9 and 21 claims. Vein No. 18, which was discovered on the KAHN no. 21 claim, is located approximately 550 ft (167.6 ft) southeast of the northeasternmost end of Contact Lake. Vein No. 28 is located 1600 ft (324.8 m) northeast of Vein No. 18, on the boundary between KAHN claims 9 and 21 or 800 m (2624.7 ft) south southeast of the Blindman Showing. The area of the showing is underlain by 050°-trending granodioritic and dioritic intrusive gneisses of the Archean La Ronge-Reindeer Belt. Quartz veins occur as narrow seams and fracture fillings, some with irregular or scattered gold values. Vein Kahn No. 18 occurs within a northeast-trending shear zone that cuts the syenodioritic to granodioritic Fork Lake pluton. Late phase mafic dykes and pyrite-bearing quartz lenses have been injected into the shear zone. Vein No. 18 is exposed over a width of 2 to 5 ft (1.5 to 1.8 m) and a length of 35 ft in within a 'warp' or drag fold. Drilling has traced the vein over a 820 ft (250 m) strike length. The vein, which contains inclusions of basic material was initially felt to be a replacement of a basic dyke. Minor pyrite mineralization is associated with the gold values in this showing. A composite trench sample taken across vein No. 18 returned 0.40 oz./ton Au over 0.6 m. A second sample taken returned 0.01 oz./ton Au over 0.9 m. Drill hole KH-1 returned 0.01 oz./ton Au over 5.5 ft. The 1982 drill hole no. 9, which intersected the vein, returned 1.22 oz./ton Au over a width of 0.5 m. The Kahn No. 28 vein, which roughly parallels a 050° gneissosity and which is exposed in a series of four trenches over a 100 ft (30.5 m) strike length, is located approximately 490 m northeast of the Kahn No. 18 vein. Like the No. 18 vein, this vein is hosted within a northeast trending shear zone that cuts the Fork Lake Pluton. Four trenches expose Vein No. 28 over a 55 m (180.5 ft) strike length. Samples from the most southwesterly trench returned 0.18 oz./ton Au over 0.6 m and 0.56 oz./ton Au over 0.9 m. A sample from a trench located 15 m to the northeast returned 0.12 oz./ton Au over 0.9 m. In 1981 a SMDC-Starrex joint venture completed drill holes nos. 31 and 48 on this vein. Both holes returned poor results. In 1983. SMDC grab sampled the showing. The better results obtained are as follows: SAMPLE PPB OZ./TON PPM PPM PPM PPM PPM NUMBER AU AU CU NI AG PB ZN ________________________________________________________ NR30-5378 >1000 1.75 --- --- --- --- --- NR30-6740 >1000 1.35 --- --- <0.2 --- --- NR30-6742 >1000 1.59 --- --- 0.3 --- --- The better drill intersections encountered are as follows: DRILLHOLE ZONE INTERESECTION WIDTH OZ/TON INTERSECTION NUMBER DRILLED (M) (M) AU GEOLOGY _____________________________________________________________________________ STAR90-1 ------- 12.2 - 12.5 0.3 1.060 mafic dyke: qtz, peg veins STAR90-3 ------- 52.6 - 52.8 0.2 0.204 25% py in qtz veining ------- 58.7 - 59.4 0.7 0.061 2% py, cpy in qtz veining ------- 61.6 - 62.4 0.8 0.106 py in metadiorite KAHN 18 62.4 - 62.9 0.5 0.054 py in ribbony qtz veining STAR90-4 ------- 47.2 - 48.0 0.8 0.033 quartz-carbonate veining STAR90-5 ------- 13.8 - 14.3 0.5 0.071 chloritized mafic dyek ------- 14.3 - 15.0 0.7 0.065 chloritized mafic dyke ------- 42.9 - 43.4 0.5 0.054 py in qtz-carb veinlets
Geological Domain
La Ronge
Host Rocks
Host Minerals
Indicators
Exploration History
8/15/1989 The claims were staked by E.F. Partridge in 1961 to cover the gold-bearing veins. The veins were subsequently trenched and diamond drilled. The results of this work are given above. The showing was investigated by W. Coombe for the Saskatchewan Geological Survey in 1974 and returned the results listed above. In 1977, SMDC completed an airborne INPUT and magnetic survey over the showing (AF 73P16-0022). In 1981, a SMDC-Phoenix Canada Oil Company Limited (later renamed Starrex Mining Corporation Ltd.) acquried the property (ML 5118). SMDC completed a regional lake sediment survey over the showing area (AF 73P16-0037). Between 1981 and 1983, the SMDC operated joint venture completed drill holes 9 to 24 to test the Kahn 18 vein at depth. Drill hole 9 intersected the vein and yielded 1.22 oz./ton Au over 0.5 m and drill hole 17 returned 0.53 oz./ton Au over 7.0 m from the Starrex 21 Zone (SMDI 0889b). In 1982, SMDC completed lake sediment sampling (AF 73P16-0039) and mapping, prospecting and grab sampled the 28 vein (AF 73P16-0038,0063). Samples of sheared felsic material (NR20-5378,6741) returned 1.75 and 0.135 oz./ton Au and a sample taken from a 3 cm wide quartz vein returned 1.59 oz./ton Au. In 1984, drill holes 25 to 30, 32 to 47, 49 to 56 were completed to test the Kahn 28 Zone. In this year, the partnership announced overall reserves for the Starrex-Kahn veins and a mining feasibility study was completed. In the same year, SMDC tested the extension of the Kahn 18 structure with drill hole NR84-005. One 0.5 m interval returned 0.063 oz./ton Au. The Kahn 28 extension was also tested with drill hole NR84-001 (AF 73P16-0064). In 1986, ML 5118 was legally surveyed (AF 73P16-0128). In 1988, a partnership, involving Cameco (50%), Starrex Mining Corporation (25%) and Uranerz Exploration and Mining Limited (25%), completed drill holes SL88-80A, 198 to 201, and 231 to test for a possible extension of the Kahn 29 Zone (AF 73P16-0132). Drill hole SL88-80A, drilled 180 m east of the Starrex 21 Vein, encountered the Kahn Structure (0.198 oz./st Au over 1.0 m) as well as a series of thin auriferous-pyritic quartz veins (400.4-401.7 returned 0.380 oz./st Au). Follow-up drill hole SL88-231 intersected only a single 2 cm wide pyritic quartz vein. On 23 November 1989, Cameco (80%) and Shore Gold Fund Inc (20%) became joint owners of the property by buying out the other partners (Golden Rule Resources Ltd., International Mahogany Corporation and Goldsil Resources Ltd). Between 1990 and 1991, a partnership involving Cameco (50%), Starrex and Uranerz Exploration and Mining (50%) completed drill holes STAR90-1 to -5 on the Kahn 18 Vein in an effort to locate further mill feed for the Jolu Mill prior to closure (AF 73P16-0155).
Production History
Reserves and/or Resources
1984-01-01 Saskatchewan Mining Development Corporation – Phoenix Starrex-Kahn veins combined reserves: 230,000 tons grading 0.50 oz/ton Au based Canada on a cut-off of 0.1 oz/ton Au. Summary: Historic reserve (unspecified) of 230,000.00 ton - Gold: 230,000.00 ton @ 0.5 oz/ton (Cutoff: 0.1)
Go back