OSIRIS PROJECT
OSIRIS PROJECT
Highlights
- Inferred Mineral Resource of 1,685,000 ounces of goldat 4.23 g/t (in 12.4 Mt)
- including a pit-constrainedresource of1,055,000 ounces of goldat 4.08 g/t(in 8.0 Mt)
- Globally competitive discovery cost of CDN $32/oz of gold*
- Discovery rate of21 ounces gold per metre drilled
- The Carlin-type Osiris Project Mineral Resource is made up of 4 zones: Conrad, Osiris, Sunrise and Ibis
- Completed 91,625 m in 273 diamond drill holes on the Osiris Project
- ~8,000 m of step out drilling completed in 2018 subsequent to maiden resource
- All zones outcrop at surface and remain open in multiple directions
| Gold Cut-Off | Tonnes | Grade (Au g/t) | Gold (oz) | |
|---|---|---|---|---|
| Pit-Constrained | 1.30 g/t | 8,045,000 | 4.08 | 1,055,000 |
| Underground | 2.60 g/t | 4,335,000 | 4.52 | 630,000 |
| Total Inferred Mineral Resource | 12,380,000 | 4.23 | 1,685,000 |
NI 43-101 Technical Report for the Osiris 2018 Resource Estimate
Osiris Maps & Figures
[
Osiris Plan Map](https://atacresources.com/assets/img/Osiris%20Plan%20Map.pdf "Osiris Plan Map")
[
Osiris Gold-in-Soil](https://atacresources.com/assets/img/Osiris%20Gold-in-soil-20210312163920.pdf "Osiris Gold-in-Soil")
[
Osiris Arsenic-in-Soil](https://atacresources.com/assets/img/Osiris%20Arsenic-in-soil.pdf "Osiris Arsenic-in-Soil")
[
Osiris Total Magnetic Intensity](https://atacresources.com/assets/img/Osiris%20Total%20Magnetic%20Intensity-20210312163933.pdf "Osiris Total Magnetic Intensity")
[
Osiris Magnetic Tilt Angle](https://atacresources.com/assets/img/Osiris%20Magnetic%20Tilt%20Angle-20210312163941.pdf "Osiris Magnetic Tilt Angle")
[
Osiris Geology](https://atacresources.com/assets/img/Osiris%20Geology-20210322133752.pdf "Osiris Geology")
[
Conrada Cross Section A-A'](https://atacresources.com/assets/img/Conrad%20Cross%20Section%20A-A'-20210322133807.pdf "Conrada Cross Section A-A'")
[
Sunrise Cross Section B-B'](https://atacresources.com/assets/img/Sunrise%20Cross%20Section%20B-B'-20210322133827.pdf "Sunrise Cross Section B-B'")
[
Osiris Cross Section C-C'](https://atacresources.com/assets/img/Osiris%20Cross%20Section%20C-C'-20210322133842.pdf "Osiris Cross Section C-C'")
[
Ibis Cross Section D-D'](https://atacresources.com/assets/img/Ibis%20Cross%20Section%20D-D'-20210322135600.pdf "Ibis Cross Section D-D'")
Osiris Diamond Drill Results
[
Osiris Diamond Drill Results](https://atacresources.com/assets/img/Osiris%20Highlight%20Diamond%20Drill%20Results-20210319150508.pdf "Osiris Diamond Drill Results")
Conrad Zone
Highlights
- Conrad Zone contains 1,290,000 ounces of goldat 4.15 g/t Au (in 9.7 Mt)
- Completed 54,609 m in 134 diamond drill holes
- Highlight diamond drill hole intersected 42.93 m of 18.44 g/t gold from 66.19 m in OS-12-114
- Mineralization at Conrad is hosted within silty limestones and is concentrated along an anticlinal fold hinge, faults and lithologic contacts
- Deposit footprint is approximately 850 x 350 m and is open along strike at depth
| Conrad Mineral Resource | Gold Cut-Off | Tonnes | Grade (Au g/t) | Gold (oz) |
|---|---|---|---|---|
| Pit-Constrained | 1.30 g/t | 6,487,000 | 4.00 | 835,000 |
| Underground | 2.60 g/t | 3,174,000 | 4.46 | 455,000 |
| Total Inferred Mineral Resource | 9,661,000 | 4.15 | 1,290,000 |
Osiris Zone
Highlights
- Osiris Zone contains 122,000 ounces of goldat 4.21 g/t Au (in 901,000 t)
- Completed 17,960 m in 67 diamond drill holes
- Highlight diamond drill hole intersected 65.20 m of 4.65 g/t gold from 56.08 m in OS-10-001
- Mineralization is stratabound and is concentrated along the contacts between limestone, dolostone and mudstone
- Deposit footprint is approximately 800 x 50 m and is open along strike and at depth
| Osiris Mineral Resource | Gold Cut-Off | Tonnes | Grade (Au g/t) | Gold (oz) |
|---|---|---|---|---|
| Pit-Constrained | 1.30 g/t | 474,000 | 4.61 | 70,000 |
| Underground | 2.60 g/t | 427,000 | 3.79 | 52,000 |
| Total Inferred Mineral Resource | 901,000 | 4.21 | 122,000 |
Sunrise Zone
Highlights
- Sunrise Zone contains 137,000 ounces of goldat 5.07 g/t Au (in 840,000 t)
- Completed 8,408 m in 34 diamond drill holes
- Highlight diamond drill hole intersected 26.70 m of 12.95 g/t Au from 272.00 m in OS-18-273
- Mineralization is hosted in a silty limestone and is dominantly structurally controlled
- Deposit footprint is approximately 350 x 85 m and is open at depth
| Sunrise Mineral Resource | Gold Cut-Off | Tonnes | Grade (Au g/t) | Gold (oz) |
|---|---|---|---|---|
| Pit-Constrained | 1.30 g/t | 309,000 | 4.23 | 42,000 |
| Underground | 2.60 g/t | 531,000 | 5.53 | 95,000 |
| Total Inferred Mineral Resource | 840,000 | 5.07 | 137,000 |
Ibis Zone
Highlights
- Ibis Zone contains 136,000 ounces of goldat 4.33 g/t Au (in 978,000 t)
- Completed 6,575 m in 26 diamond drill holes
- Highlight diamond drill hole intersected 38.10 m of 3.33 g/t gold from 95.40 m in OS-11-040
- Mineralization is stratabound and is concentrated along geologic contacts between limestone, dolostone and mudstone
- Deposit footprint is 250 x 75 m and is open along strike and at depth
| Ibis Mineral Resource | Gold Cut-Off | Tonnes | Grade (Au g/t) | Gold (oz) |
|---|---|---|---|---|
| Pit-Constrained | 1.30 g/t | 775,000 | 4.35 | 108,000 |
| Underground | 2.60 g/t | 203,000 | 4.27 | 28,000 |
| Total Inferred Mineral Resource | 978,000 | 4.33 | 136,000 |