Ontario Geological Survey
Permanent Link to this Record:
MDI52O08NE00014
| Record Name(s) | Dona Lake # 5 - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Nov-29 |
| Date Last Modified | 2022-Mar-02 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Dona Lake Area
Latitude: 51° 23' 17.19" Longitude: -90° 10' 1.27"
UTM Zone: 15 Easting: 697108.34 Northing: 5696794.58 UTM Datum: NAD83
Resident Geologist District: Thunder Bay North
NTS Grid: 52O08NE
Point Location Description: Transfer
Location Method: Conversion from MDI
1980-1985: Geophysical and geological surveys and diamond drilling by Dome Exploration.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52O08NE0012 | 52O09NW0010 | 52O09NW0010 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Pickle Lake
Geological Age: Mesoarchean
Feb 08, 2007 (Mark Puumala) - The area geology is described in MDI52O08NE00010.
| Rock Type | Rank | Composition | Texture | Relationship | Vein | 1 | Host |
|---|---|---|---|---|
| Mafic lava flow-unsubdivided | 2 | Adjacent | ||
| Ironstone-unsubdivided | 3 | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Pyrite | Economic | Ore | ||||
| 10 | Pyrrhotite | Economic | Ore |
Feb 08, 2007 (Mark Puumala) - This occurrence is based on two anomalous gold assays reported in Dome Exploration ddh 172-7 (AFRI# 52O09NW0010). The anomalous gold values were reported within 22 m of top of the borehole from basalt containing quartz veins mineralized with pyrrhotite (up to 5%) and pyrite (up to 3%). The upper 25 m of the drill hole section was dominated by basalt. The mafic metavolcanics are underlain to the southwest by an iron formation that was intersected over s length of approximately 62 m. This iron formation is in turn underlain by mafic metavolcanics to the southwest. No notable gold assays were reported from the iron formation. The most notable reported assay was 7.89 g/t Au over 0.5 m.
| Rank | Classification |
|---|---|
| 2 | Lode (Gold) |
| Rank | Characteristic |
|---|---|
| 1 | Vein |
Date: Jul 17, 2007
Geologist: Mark Puumala
Notes: A nearby outcrop located at UTM Zone 15, 697479E, 5696491N was observed on July 17, 2007. This exposure contained a layer of contorted banded iron formation hosted within mafic metavolcanics.
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office