Ottawa, ON, Canada: Cornerstone Capital Resources Inc. (“Cornerstone” or “the Company”) (TSXV:CGP; OTC:CTNXF; FWB:GWN1) is pleased to provide an update on its Bramaderos gold and copper joint venture in southern Ecuador (see Figures 1 and 2) in which it has a 12.5% interest carried by JV partner and project operator Sunstone Metals Ltd. (ASX: STM) through to the start of commercial production (see “About Bramaderos”, below).
Figures related to this news release can be seen in PDF format by accessing the version of this release on the Company’s website (www.cornerstoneresources.com) or by clicking on the link below:
https://cornerstoneresources.com/site/assets/files/5855/nr22-13figures.pdf.
HIGHLIGHTS:
- Strong assay results received from Brama for holes BMDD0014, 015, 016, 017, and 018:
- 221.6m at 0.43g/t gold, 0.11% copper, from surface in BMDD014
- 93.3m at 0.55g/t gold and 0.08% copper from surface in BMDD015, including
- 24m at 0.86g/t gold, 0.10% copper, from surface
- 84m at 0.5g/t gold, 0.16% copper from surface in BMDD017
- 57m at 0.74g/t gold, 0.23% copper from 30m in BMDD018
- These results extend the Brama-Alba system to at least 1.1km long and it remains open to the east and west
- The latest assays also identify significant near-surface higher-grade zones
- Ongoing drilling is aimed at continuing to extend the deposit to the east beyond BMDD017
- Strong potential for the Brama-Alba deposit to extend significantly to adjacent targets Melonal and Playas
- Metallurgical test work is underway on samples from Brama-Alba
- Three drill rigs active at Bramaderos
- Initial Mineral Resource Estimate set for later this year
Cornerstone VP Exploration, Yvan Crepeau, said:
“We are pleased with the latest round of results from Brama-Alba. These strengthen the potential and increase the scale of the Brama porphyry system. As we have seen in previous assay results from Brama we continue to see very good gold-copper grades from surface.
“These results will be incorporated into an initial Mineral Resource Estimate for the Brama-Alba deposits expected in late 2022.
“Further holes will now be drilled on the eastern end of Brama to potentially enlarge the gold-copper system in this direction.
“Ongoing drilling at Alba is progressing well and the market will be updated as more assay results are returned”.
* The reader is cautioned that there has been insufficient exploration to define a mineral resource at Bramaderos and it is uncertain if further exploration will result in the target being delineated as a mineral resource.
FURTHER INFORMATION:
The results from holes BMDD014 through 018 clearly show that higher grade mineralization occurs in sub-domains within the larger 1.1km long Brama-Alba system (Figures 1 & 2), and that these higher-grade domains extend to surface (Figure 4). The potential for Brama to host a substantial gold-copper porphyry system (Figures 3 & 4) is being reinforced with ongoing drilling. There is also potential for this system to extend significantly to adjacent targets Melonal and Playas (Figure 5). These areas are expected to be drill tested in Q3 and Q4 2022 respectively.
Assay results for drill holes BMDD014 through 018, and 26 are provided in Table 1 and shown in Figures 3 and 4.
Drill holes BMDD014, 15 and 16 were drilled from the collar of hole BMDD008, towards the east, southeast, and south-southwest respectively. BMDD014 and 15 were drilled to test higher grade intrusive breccias previously drilled in hole BMDD008 and 008W1, which intersected 505.1m at 0.43g/t gold, 0.1% copper from surface, including 84.3m at 0.80g/t gold, 0.11% copper from 179.7m. Most of the mineralization in drill hole BMDD016 is also hosted in syn-mineral intrusion breccias.
Drill hole BMDD017 was drilled at the eastern end of the Brama porphyry system and drilled towards the southeast. It intersected a sequence of alternating syn-mineral diorite, late hornblende-quartz diorite, and minor intrusive breccia, with the upper 84m being well mineralized. The bottom 200m drilled mainly syn-mineral diorite with disseminated and vein hosted chalcopyrite, bornite and trace covellite and chalcocite. The bottom 5.6m of hole 17 is well mineralized and it is planned to re-enter this hole and deepen it to test the possible extension of the deep mineralized zone. Four drill holes have been planned to test eastern extensions of the deposit and to test an undrilled magnetic target at depth just east of Brama.
Drill hole BMDD018 was drilled between holes BMDD004 and BMDD017, at a shallow angle, and tested an interpreted domain of higher-grade mineralized porphyry near surface. This zone was intersected in the upper 84m of the drill hole and was then disrupted by post-mineral dykes, and then passed into early host quartz diorite towards the southwest, consistent with other drill holes. The vertical extent of the higher-grade zone remains poorly tested and will be followed-up.
Drill hole BMDD026 was drilled from the collar of hole BMDD008, towards the west to test an area of magnetic targets that are located between Brama and Alba.
Drill Hole | From (m) | To (m) | Interval (m) | Au (g/t) | Cu (%) | Mo (ppm) | Ag (g/t) |
| | | | | | | |
BMDD014 | 0.40 | 430 | 429.60 | 0.36 | 0.10 | 6.41 | 1.52 |
including | 0.40 | 222.00 | 221.60 | 0.43 | 0.11 | 6.7 | 1.8 |
including | 0.40 | 7.60 | 7.20 | 1.09 | 0.15 | 8.3 | 2.8 |
including | 91.65 | 137.45 | 45.80 | 0.61 | 0.14 | 10.3 | 2.1 |
including | 142.10 | 203.15 | 61.05 | 0.49 | 0.15 | 2.8 | 2.1 |
| | | | | | | |
BMDD015 | 5.00 | 98.30 | 93.30 | 0.55 | 0.08 | 10.7 | 1.4 |
including | 5.00 | 29.00 | 24.00 | 0.86 | 0.10 | 12.1 | 2.0 |
| 106.00 | 217.70 | 111.70 | 0.29 | 0.09 | 5.2 | 1.2 |
including | 153.60 | 158.00 | 4.40 | 0.76 | 0.11 | 8.6 | 1.6 |
| 271.50 | 309.65 | 38.15 | 0.42 | 0.17 | 2.5 | 1.7 |
including | 283.95 | 309.65 | 25.70 | 0.51 | 0.20 | 2.4 | 2.0 |
| 317.85 | 405.75 | 87.90 | 0.23 | 0.11 | 1.8 | 1.3 |
| | | | | | | |
BMDD016 | 0.00 | 552.30 | 552.30 | 0.31 | 0.10 | 10.2 | 1.2 |
including | 0.00 | 97.70 | 97.70 | 0.42 | 0.07 | 7.9 | 1.4 |
and | 114.95 | 208.00 | 93.05 | 0.34 | 0.08 | 28.8 | 1.2 |
and | 256.00 | 343.25 | 87.25 | 0.47 | 0.12 | 7.1 | 1.4 |
and | 308.00 | 336.00 | 28.00 | 0.55 | 0.14 | 6.3 | 1.5 |
and | 354.00 | 396.00 | 42.00 | 0.42 | 0.17 | 8.0 | 1.5 |
| | | | | | | |
BMDD017 | 0.00 | 308.00 | 308.00 | 0.27 | 0.12 | 3.8 | 1.5 |
including | 0.00 | 84.00 | 84.00 | 0.50 | 0.16 | 4.3 | 2.2 |
including | 10.50 | 48.00 | 37.50 | 0.65 | 0.18 | 4.5 | 2.2 |
including | 100.50 | 144.00 | 43.50 | 0.30 | 0.14 | 4.7 | 1.7 |
| 378.00 | 383.60 | 5.60 | 0.28 | 0.12 | 8.2 | 1.7 |
| | | | | | | |
BMDD018 | 30.00 | 87.00 | 57.00 | 0.74 | 0.23 | 3.1 | 3.5 |
including | 30.00 | 76.50 | 46.50 | 0.84 | 0.24 | 3.1 | 3.8 |
including |