Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52F03NE00015

Record: MDI52F03NE00015

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Napanee Lake Area

Latitude: 49° 7' 32.34"    Longitude: -93° 7' 22.75"

UTM Zone: 15    Easting: 491027.188   Northing: 5441431.041    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52F03NE

Point Location Description: Transfer

Location Method: Conversion from MDI

Access Description: The Manitou - Hailstone Bay property is located approximately 100 km northwest of the town of Fort Frances, Ontario, in N.T.S. map sheet 52F/03. The property straddles a body of water known as the Manitou Stretch, making it accessible via boat or float plane. Boat access is possible from either the Cedar Narrows boat landing or the South Bay landing, both on the Cedar Narrows logging road. The Cedar Narrows logging road is accessed from highway 502 between the towns of Dryden and Fort Frances. (Assessment File 52F/03 NE R-6, Results of Geological Mapping on the Manitou Property, Napanee Lake and Vista Lake Areas by Homestake Mineral Development Company; 1990, Kenora Resident Geologists Office)

Exploration History

1901: Discovery and prospecting of Gates Lake and Peep Bay gold occurrences by Pan American Exposition. 1940-41: Geological mapping and sampling of the Gates Lake and Peep Bay occurrences by Sylvanite Gold Mines, Limited, and Noranda Mines Ltd. Best assay results include 0.16 oz/ton over 10 ft. 1942: Goldale Mines and Birch Bay Gold Mines in a joint venture drilled the Gates Lake occurrences. Ten holes were drilled. 1981-82: The Gates Lake property was held by R. Portelance of Thunder Bay, Ontario. Some trenching was done for assessment purposes, but no results have been reported. 1983: The claims of R. Portelance lapsed and were subsequently staked by the principals of Norontex Exploration Ltd. of Dryden, Ontario. 1983-86: Prospector J. Scouten staked the Peep Bay occurrences and ground to the southeast (Sorry Mac claims. He optioned the property to Sparton Resources Inc. who carried out an extensive program of geological mapping, trenching, soil sampling and geophysical surveys. Several gold and arsenic soil anomalies were obtained with bedrock values up to 0.21 oz./ton across 3 m. Follow-up drilling (1072m in 12 holes) intersected 3.50 gpt Au/0.75 m and 2.29 gpt Au/2.6 m. Results are unavailable for 3 of the holes. The two holes drilled on the Peep Bay occurrence missed the target, drilling beneath and down dip of the projected horizon. 1987: Prospector Robert Fairservice staked 7 claims over the Gates Lake occurrences. Sparton Resources Inc. returned the Peep Bay and Sorry Mac properties to J. Scouten. Noranda Exploration Company, Limited conducted an airborne magnetic, VLF and radiometric survey over their Pipestone Lake-Straw Lake-Manitou Stretch property which adjoined the Fairservice claims to the west. The airborne coverage included the Gates Lake and Peep Bay occurrences. 1988: R. Fairservice staked an additional 5 claims adjoining the Gates Lake claim block.

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Terrane: Western Wabigoon

Belt: Eagle-Wabigoon-Manitou

Geological Age: Precambrian  

Lithology Comments

Feb 18, 2010 (C Ravnaas) - The Manitou property is situated in the Wabigoon Subprovince of the Canadian Shield. The Manitou Stretch area is a narrow, 15 km wide belt of greenstones bounded to the north and south by granitic batholiths. The Manitou property lies near the intersection of the Manitou fault and the Pipestone-Cameron fault. The Manitou and Pipestone-Cameron faults are major zones of deformation and displacement with many similarities to the Larder Lake-Kirkland Lake, Destor-Porcupine and Cadillac-Malarctic breaks of other Canadian Archean gold camps (Melling, Blackburn, Watkinson, Parker, 1988). The property is underlain by mafic and intermediate to mafic volcanic flows with lesser intermediate pyroclastic material and sediments. These supracrustal rocks are locally intruded by gabbroic stocks and sills. Rare, thin quartz porphyritic felsic sills intrude the metavolcanic rocks. Fault splays off the 75 km long Manitou fault zone are present on the property. Gold mineralization occurs in association with Fe carbonate-silica-sericite-arsenopyrite-pyrite replacement zones and quartz veins. Mineralization is controlled by fault splays off the main deformation zone. The most prominent geological feature of the Manitou property is its' location on the Manitou Fault Zone, a regional scale deformation zone some 75 km long. The Manitou Fault Zone divides the region into two different lithological and structural domains. (Assessment File 52F/03 NE R-6, Results of Geological Mapping on the Manitou Property, Napanee Lake and Vista Lake Areas by Homestake Mineral Development Company; 1990, Kenora Resident Geologists Office).

Mineralization

Mineralization Comments

Jan 04, 2010 (D Scholtz) - Gold Mineralization: The best gold values were obtained from trench C, which assayed 4.32 gpt Au/4.4 m , including 12.50 gpt Au/0.4 m and 6.53 gpt Au/1.0 m (TABLE 2). Sparton diamond drill hole SM-85-7, beneath the trench, intersected 2.29 gpt Au/2.6 m. Holes SM-86-8 and SM-86-10 also drilled beneath trench C, successfully intersected the target mineralized horizon, however analytical results are unavailable. Gold mineralization is associated with Fe carbonate-sericite-pyrite-arsenopyrite schist with 5-10% pyrite and 1-2% arsenopyrite. The highest Au value was associated with 20% arsenopyrite. Minor 5-15 cm wide quartz-arsenopyrite veins within the schist are gold bearing. Massive Fe carbonate-sericite replacement with stockwork quartz veining is barren of gold. Significant gold mineralization exposed in trench B, is hosted by Fe carbonate-sericite-arsenopyrite-pyrite schist with up to 10% arsenopyrite and 5% pyrite. On surface the schist averaged 1.95 gpt Au/3.15 m (including 2.63 gpt Au/2.0 m), with individual assays up to 4.58 gpt Au/0.60 m (TABLE 2). Sparton hole SM-85-5 drilled beneath trench B intersected 20 cm of arsenopyrite-pyrite mineralization which assayed 0.4 gpt. Gold mineralization occurs within the 'West Zone', south of Hailstone Bay, where grab samples returned gold assays of 8.51 gpt and 1.42 gpt at trench E and 1.70 gpt, 1.52 gpt, and 1.38 gpt west of Hidden Bay River (TABLE 2). Gold is associated with pyrite and arsenopyrite within Fe carbonate-sericite schist and massive Fe carbonate replacement. Up to 5% pyrite, and 2% arsenopyrite is present. Although quartz stockwork veining and flat quartz veinlets occur, they are not in themselves auriferous. Sparton hole SM-85-4, drilled beneath trench E intersected 3.50 gpt Au/0.75 m. A 3 m wide, 150 m long Fe carbonate rich shear in basalts is exposed on the east shore of Hidden Bay River (18+65W, 18+00S). It assayed 17.95 gpt Au in a grab sample, however resampling in a chip sample assayed only 1.09 gpt Au/1.0 m from the same site. Deformation and Fe carbonate alteration associated with intrusive margins is largely non-auriferous. The highest grade sample from this type of deformation was a 2.55 gpt grab sample of quartz-Fe carbonate vein float (TABLE 2). (Assessment File 52F/03 NE R-6, Results of Geological Mapping on the Manitou Property, Napanee Lake and Vista Lake Areas by Homestake Mineral Development Company; 1990, Kenora Resident Geologists Office)

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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office