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Ontario Geological Survey
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MDI000000001783
| Record Name(s) | Rio Tinto Minerals DDH PC10-002 - 2010 |
|---|---|
| Related Record Type | |
| Record Status | Occurrence |
| Date Created | 2014-Oct-22 |
| Date Last Modified | 2021-Dec-13 |
| Created By | P Bousquet |
| Revised By | P Bousquet |
Primary Commodities: Gold
Township or Area: Reeves
Latitude: 48° 11' 44.82" Longitude: -82° 5' 42.77"
UTM Zone: 17 Easting: 418612 Northing: 5338641 UTM Datum: NAD83
Resident Geologist District: Timmins
NTS Grid: 42B01NE
Point Location Description: Drill hole collar
Location Method: Based on Assessment
1947: The first reported work in the immediate area of the ultramafics was carried out by Pen-Star and Pen-More Syndicates and consisted of geophysical and geological work carried out as a guide to prospecting for sulphide deposits. 1950: Asbestos was discovered by J.C Bromley while prospecting. 1951: The property was acquired by Johns Manville who started an exploration program in the following year. This exploration program which continued for over twenty years consisted of geological mapping, magnetic, electromagnetic surveys and diamond drilling was centred on the Reeves Mine but did cover a number of other asbestos showings in the area. Diamond drilling on the main prospect totalled 8,031m in 1952 and 4,370m in 1953. 1964: Underground exploration started and bulk samples were collected from surface and underground. These samples totalling 8,380 tonnes in 1964 and 1,878 tonnes in 1965 (8,248 tons and 1,848 tons) were processed at the Munro Mine. 1966: Overburden stripping and site preparation began. 1968: The Reeves Mine started production. 1975: mine closes because of uncontrollable dust conditions in the mill. 2010: Rio Tinto Minerals / Luzenac Inc. – EM, Mag, DD – 7 – 1256m, Assays.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| T-506 / 63.440 | 42B01NE0060 | 42B01NE0060 |
| T-506 / donation | donation | donation |
| T-506 / 63.774 | 42B01NE0063 | 42B01NE0063 |
| T-506 / 63.833 | 42B01NE0062 | 42B01NE0062 |
| T-506 / | 42B01NE0068 | 42B01NE0068 |
| T-2799 / 2.6342 | 42A04NW0028 | 42A04NW0028 |
| T-6173 / 2.46282 | 20000005601 | 20000005601 |
| T-6391 / 2.50807 | 20000006720 | 20000006720 |
Province: Superior
Subprovince: Abitibi
Terrane: Wawa-Abitibi
Belt: Swayze
Tectonic Assemblage: Muskego-Reeves
Geological Age: Neoarchean
Metamorphism Type: Regional
Metamorphism Grade: Greenschist
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Quartz | Host |
|---|---|---|---|---|
| Peridotite | 2 | Talcose | Adjacent | |
| Mafic lava flow-unsubdivided | 3 | Carbonatized, Chloritic | Adjacent | |
| Quartz Porphyry | 4 | Quartz | Porphyroblastic | Host |
| Wacke | 5 | Siliceous | Host | |
| Claystone | 6 | Graphitic | Near |
Oct 22, 2014 (P Bousquet) - Drill hole PC10-002 encountered a quartz vein located at the contact between a talc-carbonate rock (ultramafic) and a chlorite-carbonate rock (mafic). Further down the hole after a sequence of graphitic argilites, a quartz porphyry in contact with a silicified greywacke or tuff is a second locus for mineralization (T-6361).
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Magnetite | Economic | Gangue | ||||
| Serpentine | Alteration | Serpentinization | 1 | Medium | Replacement | ||
| Tremolite | Alteration | Steatization | 2 | Medium | Replacement | ||
| Dolomite | Alteration | Carbonatization | 3 | Weak | Replacement | ||
| Magnesite | Alteration | Steatization | 4 | Medium | Replacement | ||
| Chlorite | Alteration | Chloritic | 5 | Medium | Replacement |
Oct 22, 2014 (P Bousquet) - Hole PC10-002 returned two thin zones with average grade gold. The first zone is located in a quartz vein at the contact between a talc-carbonate altered ultramafic rock and a carbonate-chlorite altered mafic rock at 94.25 to 94.35 metres in the hole. The quartz vein is white to blue in appearance, and visible gold was seen in the box. The vein returned an assay of 10.7 g/t Au over 0.1 metres (T-6391). The second zone is at the contact between a quartz porphyry and a wacke (tuff?) at 248.00 to 248.60 metres in the hole. The second zone is silicified and shows pyrrhotite and some trace arsenopyrite. The zone returned two assays: 12.91 g/t Au over 0.31 metres and 4.68 g/t Au over 0.29 metres (T-6391).
Map - Reeves and Sewell townships, Sudbury District
Publication Number: M2230 Scale: 1:31,680 Date: 1972
Author: Milne V.G.
Publisher Name: Ontario Dept. of Mines and Northern Affairs
MonoMap - Geology of the Kukatush-Sewell Lake area, District of Sudbury
Publication Number: R097 Scale: Date: 1972
Author: Milne V.G.
Publisher Name: Ontario Division of Mines
MonoMap - Geology of the Chapleau area, districts of Algoma, Sudbury, and Cochrane
Publication Number: R157 Scale: Date: 1977
Author: Thurston P.C., Siragusa G.M., Sage R.P.
Publisher Name: Ontario Division of Mines
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
MonoMap - Precambrian Geology, Northern Swayze Greenstone Belt
Publication Number: R297 Scale: Date: 1995
Author: Ayer J.A.
Publisher Name: Ontario Geological Survey
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For detailed information regarding this mineral record please contact the Timmins Resident Geologist District Office