Ontario Geological Survey
Permanent Link to this Record:
MDI41I11NW00060
| Record Name(s) | McCreedy East - 1990 |
|---|---|
| Related Record Type | Compound |
| Related Record(s) | |
| Record Status | Past Producing Mine Without Reserves or Resources |
| Date Created | 1990-Dec-20 |
| Date Last Modified | 2024-Feb-07 |
| Created By | |
| Revised By |
Primary Commodities: Nickel, Copper
Township or Area: Levack
Latitude: 46° 40' 4.29" Longitude: -81° 20' 58.39"
UTM Zone: 17 Easting: 473260.74 Northing: 5168314.66 UTM Datum: NAD83
Resident Geologist District: Sudbury
NTS Grid: 41I11NW
Point Location Description: Point
Location Method: Conversion from MDI
Inco identified the McCreedy East Deposit through drilling in the late 1960’s.
Province: Southern
Subprovince: Sudbury Structure
Supergroup: Sudbury Igneous Complex, Main Mass
Geological Age: Paleoproterozoic Geochronological Age: 1.85Ga
Aug 14, 2015 (L Hall) - The McCreedy East Mine is a SIC Contact deposit hosted by Sublayer Breccia and Footwall Breccia in contact with Archean Levack Gneiss in the North Range of the Sudbury Structure.
| Rock Type | Rank | Composition | Texture | Relationship | Norite | 1 | Sublayer | Breccia | Host |
|---|---|---|---|---|
| Breccia-unsubdivided | 2 | Footwall Breccia | Host | |
| Gneiss-Unsubdivided | 3 | Levack Gneiss | Footwall |
Aug 14, 2015 (L Hall) - Sublayer Breccia is a fragmental rock with an igneous textured noritic groundmass bearing inclusions of mafic and ultramafic character of contentious origin. The Footwall Breccia has an igneous groundmass; however it is more felsic tending towards granitic composition. The inclusions in Footwall Breccia are derived from the footwall rocks, in this case primarily Levack Gneiss.
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrite | Economic | Ore | ||||
| 3 | Pyrrhotite | Economic | Ore | ||||
| 4 | Pentlandite | Economic | Ore |
| Rank | Characteristic |
|---|---|
| 1 | Breccia |
| Zone | Year | Category | Tonnes | Reference | Comments | Commodities |
|---|---|---|---|---|---|---|
| McCreedy East | 1990 | Indicated Mineral Resource | 455000000 | Northern Miner article |
| Year | Tonnes | Commodities | Reference | Comment |
|---|---|---|---|---|
| 2014 | 1385000 | Vale Quarterly Report | Production numbers are a combined production of the Coleman Mine, Lower Coleman Mine and the McCreedy East Mine. | |
| 2013 | 1515000 | Vale Quarterly Report | Production numbers are a combined production of the Coleman Mine, Lower Coleman Mine and the McCreedy East Mine. | |
| 2012 | 1062000 | Vale Quarterly Report | Production numbers are a combined production of the Coleman Mine, Lower Coleman Mine and the McCreedy East Mine. |
Mono - Geology of Cascaden, Dowling, Levack and Trill townships, District of Sudbury
Publication Number: OFR5533 Page: 66, 123 Date: 1985
Author: Lafleur J., Dressler B.O.
Publisher Name: Ontario Geological Survey
Location:
Folio - Levack Township
Publication Number: GDIF472 Date: 1997
Author: Sudbury RGO
Publisher Name: Ontario Geological Survey
Location:
Journal - North Rim Nickel; INCO's Lower Coleman and East McCreedy orebodies
Publication Number: Vol. 76, No. 4 Date: 1990
Author: Pat Whiteway
Publisher Name: Northern Miner
Location: online
Publication - Magmatic ore deposits of the Sudbury Igneous Complex; Institute on Lake Superior Geology 43rd Annual Meeting; Field Trip Guidebook
Publication Number: ILSG V43, Pt 5 Date: 1997
Author: S.A. Prevec
Publisher Name: Institute on Lake Superior Geology
Location: Sudbury District Geologist Office
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