Ontario Geological Survey
Permanent Link to this Record:
MDI000000000416
| Record Name(s) | Echo Bay BRE-90-07 - 1990 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2007-Nov-01 |
| Date Last Modified | 2022-Jun-08 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Setting Net Lake Area
Latitude: 52° 50' 20.36" Longitude: -93° 36' 11.99"
UTM Zone: 15 Easting: 459360 Northing: 5854530 UTM Datum: NAD83
Resident Geologist District: Red Lake
NTS Grid: 53C13SE
Point Location Description: ddh database
Location Method: Data Compilation
1987-88: Geophysics and geological mapping by Greystar Resources. 1990: Diamond drilling by Echo Bay Mines.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.13664 | 53C13SE0053 | 53C13SE0053 |
| 53C13SE0054 | 20000004851 | 20000004851 |
| 2.12095 | 53C13SE0010 | 53C13SE0010 |
Province: Superior
Subprovince: Sachigo
Terrane: North Caribou
Belt: Favourable Lake
Geological Age: Neoarchean
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Iron Formation, Chert And Tuff | Contains |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrrhotite | Economic | Ore | ||||
| 2 | Arsenopyrite | Economic | Ore |
Nov 01, 2007 (Mark Puumala) - This occurrence is based on anomalous gold assays reported from Echo Bay Mines diamond drill hole BRE-90-07 (AFRI# 53C13SE0053). The diamond drill hole log indicates that a sequence consisting of mafic metavolcanics interbedded with chemical metasedimentary rocks (iron formation and chert horizons) was encountered. The gold mineralization occurs within an approximately 40 m wide unit logged as interbedded chert and mafic tuff. This unit contains approximately 2% pyrrhotite, which is reported to occur as fracture fillings in chert, stringers and patches in tuff, and as disseminations throughout. Up to 1% disseminated arsenoppyrite is also reported to occur in the chert horizons as medium to coarse euhedral grains. An assay of 1620 ppb Au was reported from a 1 m section located approximately 5 m below the top of this unit.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Stratabound |
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For detailed information regarding this mineral record please contact the Red Lake Resident Geologist District Office