Ontario Geological Survey
Permanent Link to this Record: MDI52F10NW00116
|Record Name(s)||Nabish Lake - 1956, Johnston-Jeness - 1987|
|Related Record Type||Simple|
|Date Last Modified||2022-Nov-04|
Primary Commodities: Nickel, Copper
Secondary Commodities: Platinum, Palladium
Township or Area: Contact Bay Area
Latitude: 49° 39' 11.73" Longitude: -92° 55' 46.59"
UTM Zone: 15 Easting: 505081 Northing: 5500082 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52F10NW
Point Location Description: Location of DDH 1 from AFRI 52F10NW0093
Location Method: Conversion from MDI
Access Description: The property is located about 10 miles southwest of Dryden and about 1.5 miles east of the south tip of Nabish Lake. (O.D.M. 1969, MRC 12, p.165)
1956: Discovered by W.A. Johnston and optioned to Preston East Dome Mines, Limited. Four d.d. holes totalling 959 feet (292.3 m) (dd #1 - claim 26922) drilled by Preston East Dome Mines. 1960: EM survey by Preston East Dome Mines Ltd. 1967: Agena Mining Company Ltd. conducted a ground EM geophysical survey. 2001: Atikwa Minerals Ltd. optioned the property and conducted geological mapping and sampling. 2009: SEDEX Mining Corp. conducted prospecting, soil sampling, and a VTEM survey.
|Office File Number||Online Assessment File Identifier||Online Assessment File Directory|
Geological Age: Archean
Nov 23, 2017 (Therese Pettigrew) - The showing is in a portion of the Nabish Lake Mafic Intrusive, one of several layered mafic intrusions (ca. 2732 Ma) lying along the periphery- of the Atikwa Batholith (ca. 2730 Ma). The Nabish Lake Intrusive is oriented north-south in long dimension, with a mushroom-shaped "cap" on the north, indicating the possibility of folding. The showing is located in this northern portion of the intrusive (AFRI 52F10NW2002).
Mar 25, 2010 (J Bongfelt) - Sulphides are related to sharing in altered Early Precambrian gabbro, close to a gabbro-granite contact. (O.D.M. 1969, MRC 12, p.165)
Nov 23, 2017 (Therese Pettigrew) - The mafic intrusive rocks consist of a sequence of massive to crudely layered mafic to ultramafic rocks underlie the claim, consisting of >1-2 m thick layers of quartz gabbro, gabbronorite, hornblende gabbro, anorthositic gabbro, and pyroxenite. Layering is generally not distinct: only locally can faint, discontinuous compositional layering on the order of centimeters be discerned. Where visible, strike of the layering is approximately 330° and dips are steep. There appears to be an east-to-west fractionation trend, from pyroxenite-gabbro-dominated couplets on the east to gabbro-anorthositic gabbro couplets on the west. Deformation is indicated by intrafolial folds of the layering; however, the details of this folding is unknown at this time. Dioritic to granodioritic rocks (of the Atikwa Batholith) form the eastern boundary of the mafic intrusive (AFRI 52F10NW2002).
|Rank||Mineral Name||Class||Economic Mineral Type||Alteration Mineral Type||Alteration Ranking||Alteration Intensity||Alteration Style|
Mar 25, 2010 (J Bongfelt) - Two pits, 30 feet apart have exposed widths of 9 and 12 feet. A grab sample assayed 1.5% Cu and 0.3% Ni. (MNR - MDI Record re Kenora Historical File 52F10NW00116, Nabish Lake)
Nov 23, 2017 (Therese Pettigrew) - Mineralization encountered is primarily disseminated sulfides, dominated by pyrite, but including lesser chalcopyrite and pyrrhotite. Sulfide concentrations are typically less than 1%, but locally attain 2-3%. Local zones of higher sulfide concentrations have been exposed in old pits, and consist of well-mineralized gabbros. Sulfides comprise up to 5-10% of the rock at these sites, and these mineralized zones range from <1 m to 3-5 m. Samples from the 2001 program showed weakly anomalous PGE concentrations at samples 627915, 627934, and 627936, with 116 ppb Pt+Pd, 121 Pt+Pd. and 74 ppb Pt+Pd, respectively. The highest nickel assays returned were 1100-1250 ppm Ni. The highest Cu assays returned were up to 3740 ppm Cu (0.374% Cu) (AFRI 52F10NW2002).
File - Resident Geologist files 5210NW, V-2 Nabish Lake Property
Publication Number: Date:
Location: Kenora RGP office
Mono - Copper, nickel, lead and zinc deposits in Ontario (revised to February, 1957)
Publication Number: MDC002 Page: 20 Date: 1957
Author: Thomson J.E., Ferguson S.A., Johnston W.G.Q., Pye E.G., Savage W.S., Thomson R.
Publisher Name: Ontario Dept. of Mines
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 165 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
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For detailed information regarding this mineral record please contact the Kenora Resident Geologist District Office