Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI52J07NW00008

Record: MDI52J07NW00008

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Armit Lake Area

Latitude: 50° 24' 47.17"    Longitude: -90° 52' 49.38"

UTM Zone: 15    Easting: 650594.803   Northing: 5586710.1    UTM Datum: NAD83

Resident Geologist District: Kenora

NTS Grid: 52J07NW

Point Location Description: taken from DDH map presented in AFRO 2.40343

Location Method: Data Compilation

Access Description: The BBM vein occurrence is located approximately 25 km NNW of the town of Savant Lake and approximately 90 km from the town of Sioux Lookout and within NTS map sheet 52J/6. Access to the property is by a logging road (Moose Lake road) located along highway 516. Secondary access roads and quad trials provide access to the main portion of the property.

Exploration History

1976: trenching and sampling. 2006-2007: Benton Resources Corp. completed line-cutting, prospecting, grid mapping and soil sampling, trenching (phase I and II) and geophysical surveys (ground magnetic, HLEM, and IP) on the cut grid. 2008: Benton resource completed 2 holes of BBM Vein zone as part of a 13-hole program on the property. Reference: Benton Resources, Kenora Assessment File 52JNW0047 and AFRO # 2.40343

Assessment Work on File

Geology

Province: Superior

Subprovince: Wabigoon

Belt: Savant Lake

Geological Age: Precambrian  

Geology Comments

Mar 04, 2011 (C Ravnaas) - The geology of the Savant Lake area has been described by Trowell (1986, 1988). The Armit Lake property is located on a WNW-trending arm of the Savant Lake greenstone belt. It is underlain by rocks of the Jutten Group which is composed of mafic and ultramafic volcanics as well as sediments. The sediments include a chert-magnetite iron formation, silica-grunerite iron formation and cherty units often containing fuchsite (no magnetite). The rocks of the Jutten Group form a 2-3 km wide belt that trends WNW from the west end of Kashaweogama Lake to the south end of Armit Lake. The belt is bounded by granitic to granodioritic rocks of the ickson Lake Pluton to the north-east and the Fairchild Lake Intrusion to south-west (Reference: Benton Resources, Kenora Assessment File 52JNW0047 and AFRO # 2.40343).

Lithology Comments

Mar 04, 2011 (C Ravnaas) - Ultramafic Volcanic Ultrmafic rocks were typically blue/green in colour, fine to medium grained, and pervasively altered. Alteration minerals most commonly encountered were serpentinite, talc and magnetite. Sulphide mineralization, when present, was most commonly fine grained and disseminated; the most common minerals being pyrrhotite and pyrite. Semi-massive sulphide mineralization was occasionally encountered with pyrrhotite being the primary sulphide mineral. Mafic Volcanic Most commonly this unit was found to be a medium green coloured, fine to coarse grained volcanic, usually exhibiting amphibolite grade metamorphism. Alteration was commonlyweak, with chlorite being the most common alteration mineral observed. Locally, intense foliation was observed forming small scale shear zones. Sulphide mineralization within this unit was primarily fine grained, disseminated pyrite. Chemical Sediments Two forms of this unit were observed during drilling; the first being a magnetite-bearing iron formation, the second a variable cherty unit which does not possess iron but was occasionally observed to contain fuchsite; a chromium mica. The chromium zones were found to be 1-3 m wide and occasionally contained sulphide mineralization in the form of fine grained pyrite. The chromium zones often found to be adjacent to ultramafic units and are most like the result of hydrothermal alteration of the ultramafics. The structural geology of the property was found to include a single phase of variable intensity pervasive mineral foliation exhibited primarily in the mafic volcanic unit. This foliation was found to typically trend at 120º/90º but was found to vary between 110º and 155º Az. (Reference: Benton Resources, Kenora Assessment File 52JNW0047 and AFRO # 2.40343).

Mineralization

Mineralization Comments

Mar 04, 2011 (C Ravnaas) - new: Drill - hole 07 intersected 1.5m grading 10.58 g/t Au (Reference: Benton Resources, Kenora Assessment File 52JNW0047 and AFRO # 2.40343 and Benton Resources, press release, May 28 2008).

Jul 12, 2022 (Q Unknown) - 1976 trench samples (AF-0016-A1): grabs up to 26.3 opt Au, chips up to 2.49 opt Au/27’, 1986 DDH #232 D-7 (AF-0018): intersects IF to W of showing, assays 2.05 gpt Au/1 m at 32 m, 1958 DDH #1 to 16 (AF-0012): extensive and variable mineralization, including silicification - no assays.

Mineral Record Details

References

File - Resident Geologist files AF SL 1958 53J07NW-0012

Publication Number: Date: 1996

Author:

Publisher Name:

Location: Kenora RGP

Map - Houghton Lake-Hough Lake, Thunder Bay District

Publication Number: M2424 Scale: 1:31,680    Date: 1980

Author: Bond W.D., Idziszek C.

Publisher Name: Ontario Geological Survey

Location:

Map - Geological series, Houghton-Hough lakes area, District of Thunder Bay

Publication Number: P0933 Scale: 1:15,840    Date: 1974

Author: Bond W.D.

Publisher Name: Ontario Division of Mines

Location:

MonoMap - Geology of the Houghton-Hough lakes area (Savant Lake area)

Publication Number: R195 Date: 1980

Author: Bond W.D.

Publisher Name: Ontario Geological Survey

Location:

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