Survey Highlights:
- New grab samples from Ashigami blast pit containing 1.00 to 6.45 g/t gold, 3.11 to 5.55 % copper and 133 to 211 ppm cobalt. *The reader is cautioned that grab samples are selective by nature and do not necessarily represent the true metal content of the mineralized zones.
- Mineralization consists primarily of chalcopyrite with pyrite within dense multidirectional networks of quartz-carbonate veins, hosted in
Gowganda formation sediments- Very comparable to veining and mineralization observed in the Alwyn Cu-Au trend.
- Located 4.5 km southeast of the historic
Alwyn Mine and adjacent to the prospective MLFZ, Ashigami Cu-Au occurrence may represent a broader extension of the mineralized system observed along the Alwyn Cu-Au trend drilled in 2022.
Figure 1. Location of Ashigami Cu-Au-Co occurrence relative to the historic
Table 1. Anomalous grab samples collected by MacDonald Mines at the Ashigami Cu-Au occurrence.
Year | Sample No. | Easting | Northing | Au g/t | Cu ppm | Co ppm | Ag ppm |
Veined Gowganda Fm Sediments | |||||||
2023 | 610444 | 530637 | 5168231 | 1.00 | 55500 | 140.0 | 7.42 |
610445 | 530637 | 5168231 | 3.90 | 31100 | 211.0 | 7.39 | |
610446 | 530637 | 5168231 | 6.45 | 31900 | 133.0 | 3.34 | |
2019 | 3482959 | 530643 | 5168221 | 0.60 | 15790 | 18.6 | 0.30 |
3482960 | 530642 | 5168225 | 0.49 | 14850 | 31.3 | 0.80 | |
3482961 | 530649 | 5168224 | 0.46 | 33270 | 44.5 | 3.20 | |
Espanola Fm Limestone – Gowganda Fm Conglomerate Contact | |||||||
2019 | 3482956 | 530874 | 5168257 | 0.10 | 9.5 | 64.1 | <0.10 |
3482957 | 530872 | 5168251 | 4.89 | 25.7 | 1356.1 | 0.10 | |
3482958 | 530883 | 5168273 | 6.24 | 2.6 | 19.3 | <0.10 |
*The reader is cautioned that grab samples are selective by nature and do not necessarily represent the true metal content of the mineralized zones.
Ashigami Cu-Au and Au-Co showings
Mineralization occurs in two areas at the Ashigami occurrence, located approximately 225 m east-west of each other. In 1981, a 100 ft x 20 ft blast pit was created to bulk sample the first occurrence, which yielded approximately 0.22% copper and negligible gold values (OGS assessment report 41I10NE0167). This occurrence is hosted within Gowganda Fm sediments and has a brecciated appearance due to intense, multi-direction quartz-carbonate veining, which contains primarily chalcopyrite with pyrite mineralization. The blast pit is still well exposed and was resampled this year (new samples 610444 – 610446) in order to test the similarities of the occurrence’s geology and mineralization to that of the Alwyn Cu-Au trend.
The second showing, located 225 m east of the blast pit, was sampled in 2019 and occurs at a strongly deformed contact between Espanola Fm limestone and a clast-poor Gowganda Fm conglomerate. The contact is sheared in a N-S orientation and Au-Co mineralization associated with pyrite within the limestone unit. The continuity of Au-Co mineralization at the contact is not yet known.
Based on historic surface sampling, sodic and iron alteration (earthy/specular hematite & chlorite) occur throughout the Ashigami area at variable intensities, with some of the strongest sodic alteration observed directly around the Ashigami showings (OGS report 41I10NE0073). The combination of these new assay results, in addition to the presence of strong sodic and seeping hematite-bearing alteration, further highlight the similarities between Cu-Au-Co mineralization in Ashigami and Alwyn areas and define the Ashigami area as a primary focus for Cu-Au-Co exploration along the MLFZ during the spring and summer of 2023. The Company’s primary objective moving forward is to determine the relationship of Cu-Au-Co mineralized showings along the MLFZ, such as Alwyn and Ashigami, and prove the area’s potential to host an IOCG and affiliated deposits.
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About
MacDonald Mines is a Canadian gold and base metal exploration company focused on exploring its 100%-owned, 19,720 ha (197 km2)
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Figure 1
Location of Ashigami Cu-Au-Co occurrence relative to the historic Alwyn Mine and 2022 drilling.
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