Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01SW00016

Record: MDI42B01SW00016

General

Commodities

Primary Commodities: Gold

Secondary Commodities: Copper, Nickel

Location

Township or Area: Keith

Latitude: 48° 8' 20.04"    Longitude: -82° 15' 37.04"

UTM Zone: 17    Easting: 406241.45   Northing: 5332506.51    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01SW

Point Location Description: North end of a large blasted trench next to a muck pile which corresponds to L255E and 0+30N.

Location Method: Field Visit with GPS

Access Description: Easy access is possible right up to the stripped area via a secondary road off the Joburke Mine and Horwood Lake access roads.

Exploration History

1946 Messrs Nick Elief and Tom Morrison discovered the mineralization in veins perpendicular to general foliation. During the course of the following winter Hoodoo Lake Gold Mines drilled 19 holes (2,280m) in several fence across the property. Some values up to 48 g/t in quartz veins were obtained but most assays were below 2.4 g/t. 1972 Dome Exploration started a base metal program with an airborne magnetic and electromagnetic survey which covered the area. This was followed by ground magnetic and EM surveys followed in turn by diamond drilling. However, none of the holes tested any targets near the Hoodoo occurrence. 1980 Dome Exploration resurveyed the area with a ground magnetic survey in the search for gold, but once again follow up diamond drilling was not on the Hoodoo occurrence. 1984 G.K. Sanford carried out a large stripping, trenching, and bulk sampling program. The best surface samples returned values of 4.1 g/t Au and a grade of 0.5 g/t was obtained in the 90 tonne bulk sample taken from the old East Showing. 1985 Gail Resources optioned the property and completed a stripping, trenching, sampling and mapping program. This work concluded that though the area was prospective, there was only a small chance that the original East Zone had any tonnage potential. 1987 Gail Resources together with a joint venture partner Marshall Minerals resumed work with an airborne magnetic survey, electromagnetic survey, and a VLF-EM survey. This was followed up by additional stripping, trenching, and diamond drilling. It was during this period, another showing was located to the northwest end of the stripped area and subsequently called the Patricia showing. Eight holes were drilled over the winter. In the following year (1988) an additional 13 holes were drilled on the Patricia showing (1,656m). In 1989 the showings were mapped in detail and chip samples were collected.

Assessment Work on File

Geology

Province: Superior

Subprovince: Abitibi

Terrane: Wawa-Abitibi

Belt: Swayze

Tectonic Assemblage: Muskego-Reeves

Geological Age: Neoarchean  

Metamorphism Type: Regional

Metamorphism Grade: Greenschist

Geology Comments

Dec 07, 2005 (S Fumerton) - The outcrop is dominated by a strong foliation / schistosity trending southeast. It is possible that this foliation may represent a splay off the major east west shearing which is associated with the mineralization at the Joburke Mine. Within the foliation / schistosity there are a number of crenulation folds which plunge steeply to the north. These folds are most common near the original East Showing and affect the pillowed flows as well as the foliation / schistosity.

Dec 07, 2005 (A Wilson) - The Hoodoo east showing is a quartz-carbonate-pyrite vein hosted in a north-northeasterly trending cross fracture in the eastern part of a stripped area.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - Structural deformation is pronounced and primary features are only recognizable along the northeast limit of the stripped area. Here elongate pillowed flows occur. Along the southwest limit of the stripped area the rocks are relatively massive and may be derived from large basaltic flows but never the less are now altered with calcite and chlorite. Between these two limits there is a very zone of alteration combined with the development of a schistosity. The intensity of this foliation / schistosity is variable and zones of lower alteration and deformation have been marked as basalt on map OFM-145. Within the central altered zone there are a number of narrow altered shear zones (10-20cm) marked by sericite and iron carbonate alteration. Locally associated with these altered shear zones are chloritic black line faults some of which contain a microbreccia. Cutting the outcrop are a number of subparallel dykes of various ages. These dykes are subparallel to the regional foliation and range in composition from mafic lamprophyres to intermediate dykes. Some of these dykes are strongly carbonatized. In addition there are some intense veins/dykes of iron carbonate and quartz stockworks which may represent altered ultramafic dykes. These have been included with other quartz carbonate zones or veins. Two types of veins commonly occur in the outcrop, calcite veins and iron carbonate veins. The calcite veins are typically narrow (<1cm) though laterally extensive and locally occupy fractures which form a diamond pattern. These calcite veins are ptygmatically folded. In contrast iron carbonate veins tend to be short (<20cm) and fat (<5cm).

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - At the East Showing parallel to the regional foliation there are numerous irregular and zoned quartz iron carbonate veins. In these veins quartz occurs in the centre and a thinner carbonate mantle surrounds the quartz. These veins are numerous, subparallel and form a stockwork in several zones up to 3m thick. Individual veins are up to 50cm thick but commonly less than 10cm and occur in a line of knots perpendicular to the foliation. Within these stockwork zones disseminated pyrite occurs in trails parallel to the foliation/veins within a zone of carbonatized material adjacent to the veins. These pyritic trails typically form less than 1% of the rock but locally are semi massive. The line of quartz carbonate knots perpendicular to the foliation is also marked by short quartz veins which are also perpendicular to the foliation. These veins are discontinuous, thick (<30cm), and short. However there true dimensions are hard to determine as most have been disrupted by trenching. Some pervasive though localized silicification is associated with these veins. These veins contain disseminated pyrite together with lesser chalcopyrite and some pyrrhotite. Galena occurs sporadically and is confined to trails of coarse grained muscovite. Sphalerite has also been reported from these veins. These quartz veins together with other similar veins are associated with all significant gold assays.

Dec 07, 2005 (A Wilson) - Channel samples returned assay values of 0.25 g/t Au over 2 m. A grab sample from a high grade vein returned an assay of 50.70 g/t Au. Other reported assays include: 0.072 oz/t Au over 0.7 m, 0.152 oz/t au over 0.6 m and up to 4.03 oz/ t Au in a grab sample. Drilling in the area only intersected low-grade material.

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 10       Structure Type: Fold

Rank: 5       Structure Type: Shear

Site Visit Information

Date: Nov 01, 1946

Geologist: S Fumerton

Notes: Original Comments are more than 2000 characters. The data cannot be converted, however the data will still be available in Digitial Prospector Database

Date: Jul 15, 2014

Geologist: P Bousquet

Notes: The area is wide open and rock outcrops over a vast area. The basalts are grey on surface and seem more affected in the east than in the west. The quartz-feldspar intrusive dikes are more beige in appearance. The pit area shows the most quartz veining and ankeritization. The area of mineralization is very localized, as these quartz veins are quickly scarce east of the pit.

References

Map - Precambrian Geology, Northern Swayze Greenstone Belt

Publication Number: M2627 Scale: 1:50,000    Date: 1995

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

Publication - Sudbury Timmins Algoma Mineral Program, Project 1: mineral inventory of the Sudbury-Timmins-Sault Ste. Marie region, Ontario

Publication Number: GSC OF 1087 Date: 1985

Author: Rose, D.G.

Publisher Name: Geological Survey of Canada

Location: https://doi.org/10.4095/129999

Map - Patricia Showing-Hoodoo Prospect, Minor Element Data

Publication Number: OFM0215 Scale: 1:250    Date: 1993

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane

Publication Number: R157 Page: 168-169  Date: 1977

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Division of Mines

Location:

Map - Geological series, Operation Chapleau, Horwood Lake sheet, districts of Algoma, Cochrane, and Sudbury

Publication Number: P0673 Scale: 1:126,720    Date: 1997

Author: Thurston P.C., Siragusa G.M., Sage R.P.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

Mono - Gold deposits of Ontario, part 2, part of District of Cochrane, districts of Muskoka, Nipissing, Parry Sound, Sudbury, Timiskaming, and counties of southern Ontario

Publication Number: MDC018 Page: 69  Date: 1979

Author: Gordon J.B., Lovell H.L., de Grijs J.W., Davie R.F.

Publisher Name: Ontario Geological Survey

Location:

Map - Geology of the Patricia showing (1987)-Hoodoo prospect, Keith Township

Publication Number: OFM0145 Scale: 1:250    Date: 1990

Author: Siragusa G.M.

Publisher Name: Ontario Geological Survey

Location:

Part - Geology of the Keith-Muskego townships area

Publication Number: ARV59-07 Date: 1997

Author: Prest V.K.

Publisher Name: Ontario Dept. of Mines

Location:

MonoMap - Geology of Keith and Muskego Townships, Northern Swayze Greenstone Belt

Publication Number: OFR5901 Date: 1994

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Mineral Prospects of the Swayze Greenstone Belt (Volume 1, Parts of NTS 41 O and Volume 2, Parts of NTS 41 P, 42 A and 42 B)

Publication Number: OFR5912 Page: 619-622  Date: 1995

Author: Fumerton S.L., Houle K.A.

Publisher Name: Ontario Geological Survey

Location:

Book - Keith Township - unpublished GDIF

Publication Number: GDIF Date: 1993

Author: Resident Geologist Staff

Publisher Name:

Location: Timmins RGP

Map - Geophysical/geochemical series, north Swayze-Montcalm area, airborne electromagnetic survey, total intensity magnetic survey

Publication Number: M81376 Scale: 1:20,000    Date: 1990

Author: Geoterrex Ltd.

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt

Publication Number: R297 Page: 47  Date: 1995

Author: Ayer J.A.

Publisher Name: Ontario Geological Survey

Location:

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