Ontario Geological Survey
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MDI52C12NW00011
| Record Name(s) | Nicobat Project - 2018, Dobie Prospect - 1952, Young-Corrigan Prospect - 1952, El1 - 2015, Allen Property - 2015, Nico1 - 2018, Emo Prospect - 1952 |
|---|---|
| Related Record Type | Partial |
| Related Record(s) | |
| Record Status | Developed Prospect With Reported Reserves or Resources |
| Date Created | 1984-Aug-09 |
| Date Last Modified | 2022-Oct-20 |
| Created By | |
| Revised By |
Primary Commodities: Nickel, Copper
Secondary Commodities: Cobalt
Township or Area: Dobie
Latitude: 48° 39' 18.01" Longitude: -93° 56' 57.6"
UTM Zone: 15 Easting: 430085.58 Northing: 5389540.21 UTM Datum: NAD83
Resident Geologist District: Kenora
NTS Grid: 52C12NW
Point Location Description: Location of drill holes and pit on map M1954-02
Location Method: Data Compilation
1952: Falconbridge Nickel Mines Ltd. carried out trenching and assaying. 1953: airborne Mag and EM surveys, ground geophysical surveys, geochemical survey. 3,118 m of DD in 47 holes. 1955-57: Stratmat Ltd. carried out mag, EM, and gravity surveys, prospecting, mapping, and 15,240 m of DD in an unknown number of holes. 1966: Chibtown Copper Corp. carried out mapping and sampling. 1968: Long Lac Mineral Exploration carried out sampling, soil sampling, and bulk sampling by large diameter percussion drilling. 2015: Crystal Lake Mining acquired the property, carried out mag and VLF surveys, and drilled 10 DDH totalling 1860 m. 2017: Crystal Lake Mining optioned the property from Emerald Lake. 2018: Crystal Lake drilled 1 DDH totalling 700 m. 2019: Crystal Lake Mining spun the property out into a company called Sassy Resources Corporation. 2020: Usha Resources optioned the property and drilled 7 DDH totalling 1439 m. 2022: Usha Resources released an NI 43-101 report and spun the property into its wholly-owned subsidiary, Formation Metals Corp.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.56505 | 20000014090 | 20000014090 |
Province: Superior
Subprovince: Wabigoon
Belt: Rainy River
Geological Age: Archean
Oct 20, 2022 (Therese Pettigrew) - The Nicobat property patents and enclosed sulphide deposit is located within the 2.7 billion year-old Rainy River Greenstone Belt that forms the southern part of the Wabigoon Subprovince. The Wabigoon Subprovince is a 900 km long east-west trending area of komatitic to calc-alkaline metavolcanics, that are, in turn, succeeded by clastics and chemical sediments. Into the greenstone rocks granitoid batholiths have intruded forming synformal structures in the supracrustals that often have shear zones along their axial planes. The Wabigoon basement rocks and remnant Mesozoic cover sediments are overlain by Labradorian till of northeastern provenance. In the Dobie Township area, a 6.5km long (north-south) by 4.2 km wide (east-west) mafic intrusive unit (the “Dobie Intrusion”) of gabbro to norite to diorite has intruded this metavolcanic assemblage. In the NE this mafic intrusive unit has been intruded by a felsic intrusive of granodiorite composition. Several areas of sulphide mineralization have been located in the south and southwest portions of the Dobie Intrusion (Tims, 2022).
| Rock Type | Rank | Composition | Texture | Relationship | Gabbronorite | 1 | Norite-Gabbro | Host |
|---|---|---|---|---|
| Ultramafic-Unsubdivided | 2 | Adjacent | ||
| Mafic lava flow-unsubdivided | 3 | massive to pillowed flows and tuffs | ||
| Intermediate lava flow-unsubdivided | 4 | dacite and dacite-andesite | flows and tuffs | |
| Sandstone | 5 | sandstone, siltstone, argillite | ||
| Schist-Unsubdivided | 6 |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pentlandite | Economic | Ore | ||||
| 4 | Chalcopyrite | Economic | Ore | ||||
| 5 | Sphalerite | Economic | Ore | ||||
| 6 | Magnetite | Economic | Ore | ||||
| 7 | Violarite | Economic | Ore |
Dec 19, 2019 (C Ravnaas) - The prospect is by the Dobie norite-gabbro intrusion. Mineralization includes pyrrhotite, pyrite, pentlandite, chalcopyrite, sphalerite, magnetite and violarite. Sulphides are present as disseminations and massive pockets. The mineralized zone reaches a maximum width of 91 m. Samples collected in 1952 returned 2.52% Ni and a trace of Cu. Drill indicated reserves quoted at 3M tons, no grades given. Bulk samples returned grades of 1.23% Cu, 0.55% Ni and 0.078% Co. A concentrate produced yielded a 92% recovery for Cu and 83% for Ni. The concentrate graded 1.62% Cu and 2.64% Ni.
Dec 19, 2019 (Therese Pettigrew) - Copper-nickel sulphides are associated with border phases of an ultramafic intrusion (Assessment report 52F04NE9650). Nickeliferous sulphides were found only in the Dobie mafic intrusive and mainly within the norite phase. They occur in local disseminations and minor pockets without evident structural control. They are believed to have been concentrated, probably by magmatic segregation, during the differentiation of the magma. In some places, the sulphides appear massive in hand specimens, but microscopic examination shows only thin skins of pyrrhotite and pentlandite around the grains of the silicate minerals. These sulphides may have been produced by reaction of magmatic hydrogen sulphide gas with iron- and nickel-bearing pyroxenes. The principal ore minerals are pyrrhotite, pyrite, pentlandite, and chalcopyrite, with small amounts of violarite, sphalerite, and magnetite. Pyrrhotite predominates. The nickel-bearing sulphide minerals are pentlandite and violarite. Pentlandite occurs as exsolution blades and grains in the pyrrhotite, and violarite as a supergene alteration product of the pentlandite. Chalcopyrite is interstitial between pyrrhotite and pyrite. The most significant deposit of nickel-copper sulphides was the original discovery located in lot 9, concession I, Dobie township. It occurs in a body of norite that forms a bulge extending outward from the southwestern part of the gabbro-norite intrusive. A grab sample of massive sulphides from the test pit on this deposit yielded on analysis 2.52% nickel and a trace of copper. Two grab samples of disseminated sulphides were submitted for analysis. One yielded 0.30% copper and 0.31% nickel, and the other 0.40% copper and 0.41% nickel (Fletcher and Irvine, 1955). The disseminated mineralization contains higher-grade parallel north-trending lenses with historic drilling indicating widths of 4.3 m to 12.2 m. A total of seven such shoots were identified. DDH A-04-15 intersected from surface to 63.75 meters (drilled purposely in a down-plunge direction to confirm continuity), a weighted average of 1.05% nickel and 2.18% copper. The bottom 9.8 m section averaged 1.92% nickel, 0.17% copper and 0.132% cobalt (Crystal Lake Mining March 30, 2017 press release). On surface, the mineralized area measures 335 m N-S by 270 m E-W by 305 m deep. Maps from Chibtown Copper Corp. show the mineralization to be approximately 134 m east of the western footwall contact of the Complex. The mineralization is described as being comprised of at least seven high-grade shoots, each being 3.65 to 12 m wide. Drilling results from the 2020 program returned assays of 0.3-0.55% Cu and 0.12-0.26% Ni. The of 1,439 m of diamond drilling in 7 holes intersected a potential magma conduit composed of cumulate textured olivine gabbro with disseminated and net-textured sulphide Cu-Ni mineralization. Wide mineralized intervals from 25 metres to 46 metres were intersected and consisted of disseminated blebs to semi-massive sulphides hosting pyrrhotite and pyrite plus chalcopyrite and trace pentlandite (Tims, 2022).
| Rank | Classification |
|---|---|
| 1 | Magmatic |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| Dobie | 1960 | Unclassified | 5000000 | Kenora assessment file number 52C/12NW B-3 | Inferred Resource: 5.0 Mt grading 0.28% Cu and 0.24% Ni | Copper 0.25 %, Nickel 0.24 % |
File - Resident Geologist files KAF 52C12NW B-3, 52C12NW B-4, 52C12NW E-1, 52C12NW H-1
Publication Number: Date:
Author:
Publisher Name:
Location: Kenora RGP
Map - Emo area, District of Rainy River, Ontario
Publication Number: M1954-02 Scale: 1:63,360 Date: 1997
Author: Fletcher G.L., Irvine T.N.
Publisher Name: Ontario Dept. of Mines
Location:
Mono - Copper, nickel, lead and zinc deposits of Ontario
Publication Number: MDC012 Page: 217 Date: 1969
Author: Shklanka R.
Publisher Name: Ontario Dept. of Mines
Location:
Part - Geology of the Emo area
Publication Number: ARV63-05 Page: 27-34 Date: 1997
Author: Fletcher G.L., Irvine T.N.
Publisher Name: Ontario Dept. of Mines
Location:
Publication - NI 43-101 Technical Report on the Nicobat Project, Dobie Township, Northwest Ontario
Publication Number: 2022 NI 43-101 Date: 2022
Author: Tim, A.
Publisher Name: Usha Resources Ltd.
Location: SEDAR
File - Mineral Deposit Files Kenora
Publication Number: Date:
Author:
Publisher Name:
Location: Kenora RGP
Map - Kenora-Fort Frances, geological compilation series, Kenora and Rainy River districts
Publication Number: M2443 Scale: 1:253,440 Date: 1981
Author: Blackburn C.E., Beard R.C., Rivett A.S.
Publisher Name: Ontario Geological Survey
Location:
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