Ontario Geological Survey
Permanent Link to this Record:
MDI52O08NE00035
| Record Name(s) | Dona Lake # 25 - 1990 |
|---|---|
| Related Record Type | Simple |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 1990-Nov-29 |
| Date Last Modified | 2022-Jun-09 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Dona Lake Area
Latitude: 51° 23' 59.2" Longitude: -90° 5' 52.26"
UTM Zone: 15 Easting: 701868.69 Northing: 5698280.33 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. 1985-1987: Advanced exploration including sinking of a 176 m exploration shaft by Dome Mines and Campbell Red Lake Mines at Dona Lake Mine.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 52O08NE0046 | 52O08NE0054 | 52O08NE0054 |
Province: Superior
Subprovince: Uchi
Terrane: North Caribou
Domain: Uchi
Belt: Pickle Lake
Geological Age: Mesoarchean
Feb 07, 2007 (Mark Puumala) - The area geology is described in MDI52O08NE00010.
| Rock Type | Rank | Composition | Texture | Relationship | Ironstone-unsubdivided | 1 | Host |
|---|---|---|---|---|
| Intermediate lava flow-unsubdivided | 2 | Near | ||
| Porphyry-unsubdivided | 3 | Albite Porphyry | Near |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 5 | Limonite | Economic | Ore | ||||
| 10 | Pyrite | Economic | Ore | ||||
| Graphite | Alteration | Graphitic | 1 |
Feb 07, 2007 (Mark Puumala) - This occurrence is based on an anomalous gold assay reported in Dome Exploration ddh 172-142 (AFRO# 52O08NE0054). The anomalous gold value occurs near the top of an approximately 40 m wide section of iron formation. This iron formation unit is cross-cut in two locations by albite porphyry and is underlain to the northwest by material logged as intermediate tuff. The gold mineralization is reported in material logged as chert amphibole iron formation with 3% pyrite, and minor garnet and graphite. The most notable reported assay was 1.37 g/t Au over 1.0 m.
| Rank | Classification |
|---|---|
| 1 | Lode (Gold) |
| 2 | Replacement |
| Rank | Characteristic |
|---|---|
| 1 | Stratabound |
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For detailed information regarding this mineral record please contact the Thunder Bay North Resident Geologist District Office