Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI000000000290

Record: MDI000000000290

General

Commodities

Primary Commodities: Zinc

Secondary Commodities: Copper, Lead

Location

Township or Area: Karas Lake Area

Latitude: 50° 52' 6.61"    Longitude: -93° 12' 34.61"

UTM Zone: 15    Easting: 485250   Northing: 5635223    UTM Datum: NAD83

Resident Geologist District: Red Lake

NTS Grid: 52K14SE

Point Location Description: DDH collar D3-96-1 on Dixie 3 zone from Tribute Resources website; GeolON DDH database

Location Method: Data Compilation

Access Description: Property is 70 km SE of Red Lake. Access may be gained from a logging road 6 km east from the Snake Falls road at Km 13.0.

Exploration History

1970s: Hudson Bay - ground geophysics (Mag. EM) and geological mapping. A number of targets were generated which were drill tested leading to the discovery of numerous Zn-rich stringer sulphide zones within felsic volcanic rocks immediately west of the Trout Lake River. Mid 1970s-1980s: Selco Mining Corp. conducted extensive ground geophysical surveys (Mag, EM-17, UTEM) and geological mapping. A number of shallow drill holes were completed to test conductive targets resulting in the discovery of the Dixie 3 deposit west of Trout Lake River and numerous narrow Zn-rich mineralized zones with associated favourable alteration on the Ben Lake property. 1986-1988 Noranda acquired ground to the north of the Ben Lake property and completed geological mapping, lithogeochemical sampling, and ground geophysics (Mag. Surface PEM). Impressive VMS-style alteration modelled as a crosscutting hydrothermal pipe was documented. One drill hole with follow-up BHPEM was completed to test pipe with negative results. 1991-1995 Noranda acquired ground and completed linecutting and ground geophysics (Mag. HLEM) and extended the Gerry South grid to the East to cover favourable stratigraphy. Noranda drilled 4 holes totalling 1733.5 m in the Dixie 3 prospect. 1996: Noranda drilled 1 DDH totalling 611.4 m. 1997: Noranda drilled 1 DDH totalling 462 m. 2002: Tribute Minerals Corp. optioned the property from Noranda. 2014: claims staked by Rubicon Minerals Corp.

Assessment Work on File

Geology

Province: Superior

Subprovince: Uchi

Terrane: North Caribou

Domain: Uchi

Belt: Birch-Uchi

Geological Age: Archean  

Geology Comments

May 07, 2007 (D Saunders) - The property is underlain by a mixed metavolcanic-metasedimentary sequence of the Birch Lake-Confederation Lake greenstone belt, within the western extension of the Uchi Lake subprovince. The sequence defines a northeast trending belt of Archean-aged rocks which extends from Confederation Lake in the east to GuHrock Lake in the west. The greenstone belt consists of three mafic to felsic volcanic cycles referred to as Cycle l (lower sequence), Cycle II (middle sequence) and Cycle III (upper sequence), (Thurston. 1985). To date, Cycle III which underlies the property, is the only sequence with proven economic base metal mineralization as represented by the South Bay Mine (1.6 mt grading 2.5% Cu, 14.0% Zn). In addition, the Cycle III sequence also hosts a number of significant but sub-economic Cu-Zn base metal deposits and prospects (Table II). The Cycle III volcanic sequence consists of interbedded mafic volcanic flows and intermediate to felsic pyroclastics with lesser interflow sediments. The mineralization is largely hosted by altered felsic to intermediate pyroclastics exhibiting chlorfte-biotite-gamet-anthophyllite footwall alteration mineral assemblages. Lithogeochemical sampling of altered volcanics indicates widespread Na-deptetion, Mg-enrichment typical of VMS footwall hydrothermal alteration.

Lithology

Mineralization

Mineralization Comments

Mar 09, 2015 (Therese Pettigrew) - Zn-rich mineralization is localized along a favourable volcanic lithologic “time break”. Mineralization is hosted within a mixed felsic pyroclastic to volcanic flow sequence representative of the third cycle of volcanism of the Confederation Lake Volcanic Belt. Mineralization is localized along a felsic-intermediate volcanic contact and consists of massive pyrrhotite with lesser pyrite, sphalerite and chalcopyrite. The deposit has been traced by diamond drilling along strike for 150 m and to a depth of 100 m. The zone averages 3 m in width. Noranda’s 1991-92 drill program had the following results: DDH SJV-91-4: 0.14% Cu, 0.53$ pb, 7.23% Zn over 1.1 m; DDH SJV-91-5: 0.08% Cu, 3.96% Pb, 11.6% Zn over 0.5 m.

Alteration Comments

Mar 09, 2015 (Therese Pettigrew) - Footwall alteration is well developed north of the mineralization and is characterized by intense chtorite-gamet-biotite alteration mineral assemblages. Footwall alteration geometry suggests "tops" to the south.

Mineral Record Details

Mineral Zones - Size and Shape

References

MonoMap - Physical volcanology and stratigraphy of the Confederation Lake area, District of Kenora (Patricia Portion)

Publication Number: R236 Date: 1985

Author: Thurston P.C.

Publisher Name: Ontario Geological Survey

Location:

Map - Geology and Tectonostratigraphic Assemblages, East Uchi Subprovince, Red Lake and Birch-Uchi Belts, Ontario

Publication Number: P3460 Scale: 1:250,000    Date: 2004

Author: Sanborn-Barrie M., Rogers N., Skulski T., Parker J.R., McNicoll V.J., Devaney J.R.

Publisher Name: Geological Survey of Canada, Ontario Geological Survey

Location:

Map - Geological series, Western Uchi subprovince stratigraphy, (Troutlake River area), Pakwash Lake sheet, Kenora District (Patricia Portion)

Publication Number: P2858 Scale: 1:50,000    Date: 1985

Author: Thurston P.C., Paktunc D.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Operation Kenora-Ear Falls, Bruce-Bluffy lakes sheet, District of Kenora

Publication Number: P1199 Scale: 1:63,360    Date: 1976

Author: Breaks F.W., Bond W.D., Desnoyers D.W., Stone D., Harris N.

Publisher Name: Ontario Division of Mines

Location:

Map - Compilation series, Trout Lake-Birch Lake sheet, Kenora District

Publication Number: P2386 Scale: 1:126,720    Date: 1981

Author: Thurston P.C., Bartlett J.R.

Publisher Name: Ontario Geological Survey

Location:

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