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Operations  |
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» Sarah Lake Property
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Apr 15, 2010
Nirek Resources Inc. Ships Gold Bullion Bars to Warrants Holders...
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Mar 26, 2010
Nirek Resources Inc. and Guardians of Gold Inc. Exchange Offer for 20%...
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Mar 19, 2010
Nirek Resources Inc. and Guardians of Gold Inc. commences Exchange Offer...
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Sep 22, 2009
Nirek Announces Completion of a NI 43-101 (Sarah Lake property) and...
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Mar 3, 2009
Sails Capital and Nirek Resources Announce a Letter of Intent for a Joint Venture...
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4 King ST.W., Suite 1320 Toronto, Ontario M5H 1B6 Canada
Phone: (416) 603-1555 |
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| Home > Operations > Sarah Lake Property |
Sarah Lake Property
Property Overview
The claim area is moderately hilly with two prominent northeast trending hills located between the north ends of Sarah and Edgar lakes. These hills are the topographic expression of the underlying ultramafic unit. Elevations in the area range from 550 to 730 metres above sea level. Vegetation is predominantly black spruce, reflecting the subarctic climate of the region. Bedrock exposure is less than 10%.
Geology and Mineralization
Granite gneiss rocks underlie most of the Sarah Lake Project. A large northwest trending sill consisting of both gabbro and ultramafic rocks intrudes the gneissic unit. Centrally located in the Project is a prominent hill, 2 kilometres wide and 4 kilometres long, consisting of an ultramafic sill.
All of the mineralization identified to date occurs within this ultramafic unit. Examination of outcrops and old drill core shows the sill to be of highly variable composition. Layers and or phases of gabbro, olivine gabbro, peridotite to pyroxenite have been identified. All units are partially altered to amphibolite. Sulphide mineralization, consisting primarily of chalcopyrite and pyrrhotite, has been identified in all the mafic and ultramafic rock.
The north 1.5 kilometres of the Sarah Lake sill has returned widespread copper, nickel and PGM mineralization (Virginia Mines 1983). This mineralization has been divided into two zones, the East and West Zones The dominant ultramafic rock is clinopyroxenite containing minor amounts of orthopyroxene and olivine. Along the eastern border of the sill, a dark coloured gabbro cut by quartz and carbonate veins has been identified.
Location and Access
The Sarah Lake Project is located 200 kilometres north of the city of Sept Iles in eastern Quebec, and is situated 90 kilometres southwest of the Quebec-Labrador border. The property is located in Desportes Township, Quebec. Access to the Project is by means of floatplane to Sarah and Edgar Lakes from the town of Wabush, located 85 kilometres to the north. The nearest road access is to Highway 389, 55 kilometres to the northwest at the community of Fire Lake. Rail access is available 60 kilometres to the east. Power can be provided by a Hydro Quebec transmission line located 15 kilometres northeast of Sarah Lake. The access road for the transmission line provides the best land access to the area; however, some sections of the road currently require reconstruction. No infrastructure exists at the Sarah Lake Project or in the vicinity.
Area
The property mining rights were acquired under a 5,200 hectares (13,000 acres) exploration permit.
Previous Work
No mineralization had been identified on the Sarah Lake Project until exploration work conducted by the Quebec Department of Natural Resources geologists in the early 1970s identified copper and nickel mineralization in the area. These occurrences were next evaluated it 1990 when the Quebec Department of Mines conducted an extensive examination of the Project including sampling and petrographic studies. All samples returned gold, copper, nickel, platinum, palladium and rhodium values. Assay results included up to 2.15% copper, 376 ppm nickel, 113 ppb palladium, 125 ppb platinum and 18 ppb rhodium.
The mining rights were subsequently acquired by Explorograhics, Inc. and optioned to Virginia Gold Mines ("Virginia"). Between 1990 and 1992, Virginia conducted an extensive exploration program on the Project that included geological mapping, line cutting, geophysical surveying, geo-chemical sampling and stripping and sampling 14 trenches and limited diamond drilling. The principal findings from Virginia's program were as follows:
 The ultramafic intrusion is multiphase comprised of amphibolized peridotite, pyroxenite and gabbro, the unit intrud biotite-amphibole gneisses. The geophysical surveys and outcrops suggest that these intrusions are much large in size than indicated by the geological mapping. Copper mineralization occurs throughout the outcropping area of the intrusives. Sulphide mineralization is generally disseminated and ranges in content from trace amounts to several percent. This mineralization is composed primarily of chalcopyrite, pyrrhotite and pyrite. The magnetic survey indicated areas of distinct igneous stratification on the Project. The trenching confirmed the presence of magnetite enriched horizons, several metres thick. A VLF¬EM survey also showed several conductive zones on the Project, with the conductor axes often situated on the shoulders of or in the troughs of magnetic anomalies.
Sampling from outcrops and erratic blocks returned assay values of 0.61 % copper, 25 ppb gold, 93 ppb platinum and 71 ppb palladium. Soquem joined Virginia in 1992 and the joint venture drilled six short diamond drill holes, ranging in depth from 30 to 60 metres, in the western area of the copper mineralization. The results of this drill program were not published but some of the core remains on site at the Sarah Lake Camp.
Most recent Work Program – September 2001
A soil geo-chemical survey completed on the Exploration Permit, PEM 0001498, between the dates of September 19 to September 29, 2001. The objective of the 2001 field program was to further evaluate a Au-Cu-Ni-PGE occurrence within ultramafic rocks located northeast of Sarah Lake. The mineral occurrence was first discovered by Quebec government geologists in the early 1970's. Subsequent to this, the mineral occurrence has been explored by various operators, most recently by the Beaver Prospecting Syndicate and Diadem Resources in 1996. The 2001 exploration program consisted of a soil geochemical survey, rock sampling of exposed mineralization and sampling of drill core from previous work. A total of 18 rock samples 12 Samples of drill core, 163 Mobil Metal Ion (MMI) samples and 155 B horizon soil samples were taken during the project. All samples were sent to XRAL Laboratories of Toronto, Ontario.
Discussion of Results
Both the B horizon and MMI soil survey's clearly show areas of known mineralization on the property. Results from the MMI survey south of the known mineralized zone. Anomalous response ratios on Line 0, stations 0+00 to 2+50E and 9+00E to 1O+00E, and Line RL-Ol, stations 3+50E to 4+50E indicate the mineralization may extend south for an additional 1000 meters. These anomalous zones are also coincident with an airborne magnetic anomaly.
Summary
• the magnesium-rich intrusive rock stands as a 200-metre hill covering an area of 1.1 kilometres by 1.5 kilometres lending itself to lower cost open pit mining
• historic assayed results from the initial drilling of nine shallow holes averaged .35% copper and .15% nickel: subsequent samples had higher values resulting in Diadem
Resources reporting .62% copper and .35% nickel
• IP (induced polarization) survey and MMI (Mobil Metal Ion) measurements also detected significant levels of metal concentrations both shallow and deep
• samples show persistent and recoverable values of gold as well as platinum, chromium, palladium, rhodium and cobalt up to 1.5 grams/ton
• historic estimates of the tonnage for the West Zone (only) started with 13.2 tons (Fonteneau Resources), then were pegged at 20.5 million tonnes (Diadem Resources) and later projected in a consulting report (F. Scott Management) to be up to 64 million tonnes.
Recommendations
The MMI response clearly indicates that the mineralized zone extends south beyond line 0+00. It is recommended that 3 lines at 2 meter spacing be added to the MMI survey to extend the survey area an additional 600 meters south from line RL-O 1. It is also recommended to add two in fill lines between LO and Line RL-O 1 to better defines the anomalous response. Anomalous responses that show good continuity should be tested by diamond drilling. Vertical holes should be put down on a 100 meter grid to sample and establish tonnage, reserves or resources in the western copper-bearing area. Positive results from this drilling should be followed by a similar grid to intersect the gneiss/peridotite contact to the east. Some of the average grade trenches should be sampled for metallurgical test work supplemented with feasible drill cores. |
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