OMAI PROPERTY - WENOT PIT -
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The Wenot past-producing mine is a long and narrow pit, with the long axis almost 1.8 km in length by about 500 meters maximum width. Wenot produced 1.4 million ounces at an average grade of 1.5 gpt.
Although separated from the Fennell pit by only 400 metres, the geology of Wenot is quite different. Whereas Fennell is an intrusive “plug” or stock, Wenot gold mineralization is hosted within a 150- 300 meter wide deformation zone or shear corridor. This long corridor, straddles a major lithologic contact between volcanic rocks on the north and sedimentary rocks on the south.
This shear corridor was the focus of several phases of crustal deformation that resulted in multiple sub-vertical shears that were subsequently intruded by dikes, deformed again with more dikes intruded, possibly multiple times. The dikes proved more susceptible to brittle fracturing and shearing along the margins during some of the successive deformation events.
During some of these deformation events gold-rich fluids preferentially flowed into the brittle fractured dikes and sheared margins leaving gold mineralization within quartz-ankerite veins and veinlets as well as in the sericite altered, sulphidized halos around the veins. These are a series of these gold mineralized near-vertical shears within the broader Wenot Shear Corridor and our 2021 drilling has successfully confirmed that they continue to at least 200 meters below the previous pit bottom.
Our drilling in 2021 has focused on drill testing the Wenot shear corridor at depth below the past producing pit. All holes drilled to date have confirmed that the shear corridor continues to depths of at least 100 to 225 meters below the pit bottom and that the multiple shears still host gold mineralization.
Gold was discovered at Wenot in February 1989, while drill testing a coincidental gold geochemical anomaly and a high magnetic geophysical signature. Gold was previously known to exist in the overlying saprolite at Wenot, as a German syndicate had a placer mining operation there during the 19th century.
Drilling Below Pit Confirms Shear’s Continuity
- Wenot Shear Corridor 200-350m wide extends 1.7 km+
- Straddles major lithologic contact between volcanics and sediments
- Contact typically hosts a wide well-mineralized feldspar porphyry dike up to 35 m wide
- Multiple near vertical shears intruded by felsic dikes and variably mineralize
Wenot Extensions: Near-Surface Potential
- Shear Corridor migrates or splays further into the metasediments at the west end of the pit
- West end potential in sediments not pursued due to constraints of mine infrastructure at the time
- Significant near-surface potential for open pit resource
Path Forward: Delivering a Wenot Resource
- Engaged Independent QP for initial Wenot that is underway
- Currently drilling with two rigs
- Completed 12 holes to date testing the Wenot Shear Corridor to depths of approx. 100 to 250m below pit bottom
- All 2021 holes under Wenot intersected multiple gold-mineralized zones
- Wealth of pre-production and production data assists in modelling geological, structural and grade trends
- Many historical drill holes extended below pit bottom providing assays and lithologs
- In 2020, recovered and resampled core from 2012 drill holes that tested under the pit
- Airborne geophysics, lidar, and drone coverage completed in 2020