Ontario Geological Survey
Permanent Link to this Record:
MDI000000000487
| Record Name(s) | DDH 524-002 - 1996 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2008-Mar-11 |
| Date Last Modified | 2022-Jun-07 |
| Created By | |
| Revised By |
Primary Commodities: Copper
Secondary Commodities: Zinc
Township or Area: Wapamisk Creek Area
Latitude: 52° 12' 32.25" Longitude: -90° 35' 50.89"
UTM Zone: 15 Easting: 664154.001 Northing: 5787000.004 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 53B02NE
Point Location Description: ddh database.
Location Method: Data Compilation
1996: Diamond drilling by Placer Dome Canada Limited.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.16715 | 53B02NE0007 | 53B02NE0007 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Horseshoe Lake
Geological Age: Archean
| Rock Type | Rank | Composition | Texture | Relationship | Siltstone | 1 | Graphitic Argillite | Host |
|---|
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Chalcopyrite | Economic | Ore | ||||
| 2 | Pyrrhotite | Economic | Ore | ||||
| 3 | Arsenopyrite | Economic | Ore | ||||
| Silica | Alteration | Silicification | 1 | ||||
| Chlorite | Alteration | Chloritic | 2 |
Mar 11, 2008 (Mark Puumala) - Talbot (1996b) described the rocks in the vicinity of this occurrence (Wapamisk Creek area) as consisting of a sequence of tholeiitic to calc-alkaline mafic to felsic metavolcanics, chemical metasediments and water lain pyroclastic rocks of a sequence referred to as the Wapamisk Domain (i.e., Wapamisk assemblage of Thurston, Osmani and Stone 1991). The chemical metasedimentary rocks of this area are dominated by oxide facies iron formations, which include two major geophysically-inferred units. The iron formations are typically associated with clastic metasedimentary rocks including mudstone, argillite, siltstone and greywacke. The stratigraphy and foliation of the area generally strike east (Talbot 1996b). Major structures include isoclinal folds with east-striking axial planes and later regional-scale northwest- and northeast-striking faults (Talbot 1996b). This occurrence is based on the reported occurrence of anomalous copper mineralization in metasedimentary rocks intersected by Placer Dome Canada diamond drill hole number 524-002. Talbot (1996b) reports that the highest metal values were found in graphitic argillite, with the most notable assays including 2787 ppm Cu over 0.61 m, 2974 ppm Zn over 1.0 m, and 3.2 ppm Ag over 0.61 m. The occurrence-grade copper assay was obtained from a unit of brecciated argillite mineralized with 2.5% pervasive chlorite, 1% calcite veins, 7.5% patchy quartz flooding, 20% interstitial pyrrhotite, 0.25% blebby chalcopyrite and a trace of arsenopyrite. The mineralization at this location is similar to that reported at Placer Dome Canada diamond drill hole 524-009.
| Rank | Classification |
|---|---|
| 1 | VMS Base Metal |
| Rank | Characteristic |
|---|---|
| 1 | Breccia |
We are continuously updating our assessment file / technical report information. If you notice errors in the data, please contact us.
Please review our Terms of Use agreement for this data product.
For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office