Ontario Geological Survey
Permanent Link to this Record:
MDI000000003310
| Record Name(s) | Dyke 5 - 1986, Duckworth Gold - 1997 |
|---|---|
| Related Record Type | |
| Related Record(s) | |
| Record Status | Occurrence |
| Date Created | 2023-Feb-03 |
| Date Last Modified | 2023-Feb-03 |
| Created By | |
| Revised By |
Primary Commodities: Gold
Township or Area: Duckworth
Latitude: 48° 33' 49" Longitude: -90° 6' 5.32"
UTM Zone: 15 Easting: 713840 Northing: 5383003 UTM Datum: NAD83
Resident Geologist District: Thunder Bay South
NTS Grid: 52B09SE
Point Location Description: DDH DW-97-03 on map in Assessment report 52B09SE2001
Location Method: Based on Assessment
1986: Inco carried out prospecting and sampling. 1997: Yanks Peak Resources Ltd. carried out geological mapping, prospecting, sampling, and drilled 7 DDH totalling 873.5 m.
| Office File Number | Online Assessment File Identifier | Online Assessment File Directory |
|---|---|---|
| 2.18103 | 52B09SE2001 | 52B09SE2001 |
| 2.17986 | 52B09SE0097 | 52B09SE0097 |
| Rock Type | Rank | Composition | Texture | Relationship | Mafic lava flow-unsubdivided | 1 |
|---|---|---|---|---|
| Intermediate Tuff | 2 | |||
| Siltstone | 3 | metasedimentary rocks | ||
| Granodiorite | 4 | dyke | Host | |
| Vein | 5 | quartz-carbonate |
| Rank | Mineral Name | Class | Economic Mineral Type | Alteration Mineral Type | Alteration Ranking | Alteration Intensity | Alteration Style |
|---|---|---|---|---|---|---|---|
| 1 | Pyrite | Economic | Ore | ||||
| 2 | Gold | Economic | Ore |
Feb 03, 2023 (Therese Pettigrew) - The eastern portion of the Duckworth Property is underlain primarily by a westerly-trending sequence of variably altered, intercalated mafic to intermediate metavolcanic rocks, associated tuffaceous units and chemical and clastic metasedimentary rocks interpreted to be of Timiskaming age. The metasedimentary rocks are most abundant within the central portion of the property and are flanked to the north and south by volcanic units. Gold-bearing felsic dykes are reported to occur south and east of the Duckworth Property and one of these has been discovered cutting across the southeast corner of claim 1202313 (Assessment report 52B09SE0097). Grab samples collected from this dyke have returned assay values of up to 2579 ppb Au. Pyrite mineralization is ubiquitous within the metasedimentary rocks and locally constitutes up to 1 to 2% of these rocks. Weak carbonate alteration (calcite +/- Fe-carbonate) is also widespread, both within the metasedimentary rocks and within the metavolcanic rocks. Areas of moderate to strong K-spar/hematite alteration and associated weak silicification, carbonatization and pyrite mineralization occur locally within intercalated oxide-facies iron formation and arenaceous rocks. Rare pyrite-bearing quartz-phyric felsic rocks occur locally. Gold mineralization, including coarse-grained free gold, is associated with quartz-carbonate veins within an altered felsic dyke of granodioritic to syenitic composition. Where intersected, this dyke varies in width from 0.36 m to 2.56 m (true widths). The best intersection, obtained from hole DW97-03, is 6179 ppb Au over 0.91 m. DDH DW97-02 returned 4662 ppb Au over 0.5 m from a sample of weakly silicified, carbonatized, hematitized and pyritized mafic to intermediate ash tuff in contact with the granodioritic dyke. The assay results suggest that the gold is heterogeneously distributed within the dyke. The gold-bearing felsic dyke has been tested by drilling for approximately 110 m along strike and to a depth of 128 m (Assessment report 52B09SE2001). Inco collected a grab sample that returned 37.8 g/t Au (Mineral Deposit files, Thunder Bay RGP office).
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