- SMDI #
- 2365
- Current Showing Name
- Rio Tinto R-1, R-1A, R-1B, R-2, and R-2A, R-6 to R-11 Trenches
- Historical Showing Names
- Rio Tinto R-1, R-1A, R-1B, R-2, and R-2A, R-6 to R-11 Trenches
- Company Name
- Project Name
- UTM Easting (NAD83 Z13)
- 507543.7300
- UTM Northing (NAD83 Z13)
- 6130964.8900
- NTS Sheet
- 073P07
- TRM (Township-Range-Meridian)
- 73-19-2
- Primary Commodities
- Gold
- Associated Commodities
- Arsenic, Iron
- Discovery Type
- Outcrop Grab
- Status
- Occurrence: Primary Exploration
- Geological Details
- The showing, which is located approximately 400 m (0.25 mile) west of the southwest end of Nancy Lake and 800 m (0.50 mile) north of the southwest tip of Bulbick Lake.
The showing, which is located 4.8 km (2.98 miles) northeast of the Anglo Rouyn minesite (SMDI 0732), consists of five old surface trenches which expose sulphide and associated gold mineralization hosted within the northeastern extension of the Anglo Rouyn Mine horizon and within the contact between this horizon and adjacent granodiorites and basalts to andesites.
The host Anglo Rouyn Mine horizon consists of a northeasterly trending, north dipping belt of Archean metasediments and metavolcanics that range in composition from meta-arkoses to meta-greywackes and from massive to porphyritic basalts and andesites. The contact between the sheared Jepsen Lake granodiorite plug and the above-described sequence of rocks forms the hanging wall of this mineralized sequence.
The mineralization present consists of disseminations and narrow bands of pyrite, pyrrhotite, chalcopyrite, minor malachite and arsenopyrite, and associated non-visible gold.
Trenches R-1, R-1A and R-1B expose the contact between the Jepsen Lake granodiorite and greywacke. The greywacke hosts a series of narrow sulphide bands composed of pyrite, pyrrhotite, and minor arsenopyrite. The best value returned by a grab sample was 380 ppb Au.
Trenches R-2 and R-2A expose the greywacke-basalt contact. The basalts host disseminations and local massive coarse-grained aggregates of up to 3% chalcopyrite, pyrite, and pyrrhotite.
Grab samples taken from these trenches returned the following values:
SAMPLE TRENCH SAMPLE PPB OZ./TON PPM PCT GEOLOGICAL
NUMBER NUMBER TYPE AU AU AG CU NOTES
____________________________________________________________________________
LY8G-6031A R-1 soil 300 ----- --- --- overburden
LY80-3016 R-1B grab 380 ----- --- --- greywacke: py
LY80-1068 R-2A chip >1000 0.035 --- --- greywacke: tr-1% cp, mal
LY80-1074 R-2A chip 440 ----- --- --- basalt: rare dissem. cpy
LY80-3015 R-2A grab >1000 0.057 --- --- amphibole pod in basalt: py
LY80-6030 R-2A grab >1000 0.024 --- --- shear greywacke:1% py,1% cp
AAR-7.4 R-6 grab >1000 0.113 17.6 1.80 py-cpy: qtz-filled shear
AR-95R-04 R-7 grab >1000 0.080 8.3 1.34 py-po-cpy: qtz rich shear
AR-95R-08 R-10 grab >1000 0.036 4.9 1.48 1-2% cpy, 1% py: greywacke
AR-95R-09 R-11 grab 700 ----- 2.9 1.01 1% cpy
AR-95R-10 R-8 grab 620 ----- 1.5 0.37 2% sulph:rusty metasediment
AR-95R-11 R-9 grab >1000 0.066 6.3 1.11 2-5% bleb cpy-py-azurite
AR-95R-21 R-4 grab >1000 0.052 3.6 0.44 1-2% cpy, py: greywacke
- Geological Domain
- Glennie
- Host Rocks
- Host Minerals
- Arsenopyrite, Pyrite
- Indicators
- Exploration History
- 2/18/1992 Between 1952 and 1953, Anglo Rouyn Mines completed geological mapping and a 50 hole reconnaissance drill program along the mineralized Anglo Rouyn horizon.
The KROY group of claims were staked to the west of the showing by E. Partridge in 1955 and later transferred to Jahala Lake Uranium Mines Limited. A ground electromagnetic survey and 6 drill holes (3 totalling 2026 ft (617.5 m)) were reported in 1956. Between 1957 and 1958, Rio Tinto Canadian Exploration Limited flew an airborne EM and magnetic survey that covered the showing area. In 1962 the KROY claims were restaked as part of the LEE group by Anglo-Rouyn. Four holes were drilled near Little and Crescent Lakes (west of the showing) and trenching was completed in 1964. Between 1964 and 1965, Rio Tinto completed geological mapping and soil sampling in the general area. Rio Tinto blasted trenches R-1, R-1A, R-1B, R-2 and R-2A which would later become this showing. Between 1968 and 1970, La Ronge Mining Limited completed a ground magnetic survey and drilled 8 holes west of the showing.
On 28 October 1982, Durama Exterprises Limited staked the showing area as CBS 1662. In 1985, Durama optioned the claim block to SMDC. SMDC completed a program of geological mapping, prospecting, rock and geochemical sampling and EM and magnetic surveys over areas with INPUT anomalies between Lee and Dam Lakes (AF 73P07-0190). In 1984, Minserv Limited completed a ground magnetic survey over the B grid on CBS 1662 that covered the immediate showing area (AF 73P07-0226). Between 1982 and 1985, Bradner Resources Limited completed ground VLF-EM, magnetic, and IP surveys and soil sampling slightly west of the showing.
In 1987, Noranda Exploration completed geological mapping, prospecting, rock and humus sampling, and drilled 2 holes (183 m) in the area covered by Bradner Resources. Noranda dropped the option.
In 1988, Cameco optioned the property from Durama. Cameco completed geological mapping, prospecting, rock, bulk till, and trench sampling over grid 88-3 (AF 73P07-0259). Resampling of existing trenches resulted in the gold values that comprise this showing.
In 1989, Durama Enterprises Limited completed a program of stripping and limited geological mapping and sampling. In the same year, Cameco completed minor prospecting and rock and soil sampling in the immediate showing area (AF 73P07-0285). The three samples taken close to the showing returned low gold values.
On 20 August 1995, RTS Holdings Ltd. Staked the showing area as S-105287. In 1997, RTS completed a ground magnetic survey which covered the showing (AF 73P07-0338). In the following year, ground magnetic and HLEM surveys, prospecting, and rock, bulk till, and soil sampling was completed on the grid which covered the showing to further test the extension of the Anglo Rouyn Mine horizon (AF 73P07-0347). The work confirmed that, in the Crescent Lake area, the mine horizon bifurcates into two parallel magnetic horizons. Rio Tinto trenches R-4 and R-6 to R-11 were re-sampled. On 1 February 2000, the claim was allowed to lapse.
On 9 February 2006, S. McKenzie staked the showing area as S-106390 for Consolidated Pine Channel Gold Corporation. Between 2000 and 2001, Pine Channel completed beep mat, HLEM, and magnetic surveys and limited rock grab sampling (AF 73P07-SW-0352).
- Production History
- Reserves and/or Resources