Ontario Mineral Inventory

Ontario Geological Survey
Permanent Link to this Record: MDI42B01NE00006

Record: MDI42B01NE00006

General

Commodities

Primary Commodities: Gold

Location

Township or Area: Penhorwood

Latitude: 48° 10' 32.89"    Longitude: -82° 6' 44.82"

UTM Zone: 17    Easting: 417299.11   Northing: 5336438.78    UTM Datum: NAD83

Resident Geologist District: Timmins

NTS Grid: 42B01NE

Point Location Description: The point located is adjacent to the old pit in the centre of a stripped area.

Location Method: Field Visit with GPS

Access Description: The occurrence is located some 65km west southwest from Timmins. Circuitous access is possible from Highway 101 via the Kenogaming and Penhorwood Main Haul roads. Then from a point 3km west of the Penhorwood / Kenogaming boundary a series of secondary forestry roads extend 5km towards the Nat River. From this point an other series of old drill trails through swampy ground lead to the stripped area.

Exploration History

1946 Allegedly two prospectors, J.C. Bromley and J.P Lafortune discovered gold at the confluence of east and west Nat Rivers. Values up to 0.8 ounces gold and 11 ounces silver were reportedly obtained from a test pit dug on the showing and stripped areas. 1947 Nib Yellowknife Mines Limited optioned the property and carried out detailed geological mapping. Additional sampling during this program failed to duplicate the values reported earlier but did note that all mineral occurrences occurred in carbonatized mafic rocks (diorite) east of a talc - carbonate shear zone. 1947 The surrounding McIntyre and Castle Tretheway claims were mapped in detail also magnetic and self potential surveys were carried out at the same time. This work was followed up by a drill program. 1950's The ground was included in a large exploration effort by Johns Manville which brought numerous claims to patent and lease including the ground underlain by the Nib Yellowknife showing. However, none of this exploration was directed towards gold. 1985 Manville Canada Inc resumed their exploration efforts southwest of the Nib Yellowknife showing with a radiometric, magnetic, electromagnetic and geological mapping program. 1987 Steetley Industries started a gold exploration program on the Nib Yellowknife occurrence with geological mapping followed by a VLF and IP survey and a limited diamond drill program. 1988 The overburden was stripped from the showing and various veins were sampled by Steetley Industries.Steetley Industries Limited – DD – 3 – 378m, Assays. 2005: Golden Chalice Resources Inc. – AEM, AMag. 2007: Golden Chalice Resources Inc. – AEM AMag. 2013: Rapier Gold Inc. – Assays, GL, Pr, LIDAR, Samp.

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 host rocks are very strongly foliated in a northeasterly direction parallel to an inferred shear zone west of the occurrence. The main vein set also parallels this foliation direction.

Lithology

Lithology Comments

Dec 07, 2005 (S Fumerton) - The occurrence is located in ultramafic rocks which may be part of an intrusive plug or a thickened sequence of komatiitic flows in the nose of a fold. Else where in the area these flows or lenses are conformable with Mg tholeiitic flows. To the west of the showing a northeasterly trending shear zone has been interpreted from geophysical data and coincides with several major occurrences of intense carbonate - talc alteration. The stripping has exposed a rock which is a relatively massive, megacrystic metavolcanic flow which is medium green - grey in colour. This unit is transected by chlorite rich zones which commonly close as crude irregular ellipses somewhat like pillows. Macroscopically the rock has a strong foliation with a flaser texture with pale blue to off white carbonate megacrysts in the centres of the resulting ellipses. Typically the rock is extensively carbonatized with calcite plus other carbonates and strongly chloritized with sparse biotite. The outcrop contains a number of irregular northeast trending zones with a rusty stain due to iron carbonate alteration and these are associated with most of the quartz veining. There are also zones with a deep golden brown colour with biotite alteration.

Mineralization

Mineralization Comments

Dec 07, 2005 (S Fumerton) - There are basically two vein sets:- 1) the dominant en-echelon extension veins with related veins on the associated shear direction both of which trend northeasterly, 2) curved veins trending east west. The en-echelon extension veins are commonly rotated, typically into Z shapes with ends maintaining a parallel alignment and the centres being much thicker. Most of these veins are <10cm thick and <2m long but may be up 10m in length locally. The veins appear to have been developed in a shear zone and where rotation in the centre of the extension veins is pronounced a secondary larger vein in the plane of the shear has developed. These secondary veins are up to a metre thick and 30m long. These veins are largely composed of quartz but in thicker sections calcite and siderite filled vugs occur. In the thinner sections massive chlorite is more common and small subhedral tourmaline crystals occur surrounded by chlorite. Coarse subhedral arsenopyrite occurs locally together with more ubiquitous though erratic pyrite in disseminated rains or aggregates. Pyrrhotite also occurs as disseminated grains. Sulphides extend into the wall rocks in an irregular manner. The second set of veins trend roughly east - west, are typically curved, up 20cm thick and 20m long and are composed of quartz with no appreciable sulphides.

Dec 07, 2005 (A Wilson) - Assay values up to 0.20 gt au were obtained from a mineralized fracture zone in massive amphibolite. A pit about 10 ft. square and 12 feet deep was blasted. The mineralization consists of fracture-filling quartz veins up to 1 inch wide carrying arsenopyrite and with arsenopyrite disseminated in the adjacent amphibolite. Grab samples taken by the OGS in 1992 returned values of 0.72 g/t Au from a quartz vein.

Feb 29, 2016 (P Bousquet) - Rapier Gold Inc. assayed samples from the Nib Yellowknife showing. The highest assay returned was 49.9 g/t gold. It came from a sample of diorite (T-6713).

Assay Samples

Mineral Record Details

Mineral Zones - Size and Shape

Rank: 5       Structure Type: Shear

Site Visit Information

Date: Jun 23, 1992

Geologist: S Fumerton

Notes: The property was visited in company with Marc Leroux of the MNDM. The overburden on the old showing has recently been stripped off and the old pit has been filled in. This stripping, an irregular area 30 x 50m, has shown that the hole drilled from the north of the pit was subparallel to the trend of the main quartz veins. From inspection there were two types of samples collected from the showing in the past. The first consisted of chip samples collected along the length of the veins with a plugger. The second set of samples consisted of short channel samples across the veins and in various locations in the host rock.

References

File - Resident Geologist files T-1985

Publication Number: Date:

Author:

Publisher Name:

Location: Timmins RGP office

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:

Map - Penhorwood Township, District of Sudbury

Publication Number: P0419 Scale: 1:15,840    Date: 1997

Author: Milne V.G.

Publisher Name: Ontario Dept. of Mines

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 - Penhorwood and Kenogaming townships, Sudbury District

Publication Number: M2231 Scale: 1:31,680    Date: 1972

Author: Milne V.G.

Publisher Name: Ontario Dept. of Mines and Northern Affairs

Location:

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:

MonoMap - Geology of the Kukatush-Sewell Lake area, District of Sudbury

Publication Number: R097 Page: 106  Date: 1972

Author: Milne V.G.

Publisher Name: Ontario Division of Mines

Location:

Map - Foleyet sheet, districts of Sudbury, Cochrane and Algoma, geological compilation series

Publication Number: P0283 Scale: 1:126,720    Date: 1997

Author: Carlson H.D.

Publisher Name: Ontario Dept. of Mines

Location:

File - Resident Geologist files 1980, air photos

Publication Number: Date: 1996

Author:

Publisher Name:

Location: Timmins RGP office

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

Publication Number: R157 Page: 179  Date: 1977

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

Publisher Name: Ontario Division of Mines

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: 114-115  Date: 1979

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

Publisher Name: Ontario Geological Survey

Location:

MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt

Publication Number: R297 Page: 49  Date: 1995

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: 554-556  Date: 1995

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

Publisher Name: Ontario Geological Survey

Location:

Book - Penhorwood Township - unpublished GDIF

Publication Number: GDIF Date: 1993

Author: Resident Geologist Staff

Publisher Name:

Location: Timmins RGP

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