Sunstone Metals Ltd. announced strong assays which extend its Brama-Alba porphyry discovery in southern Ecuador to 1.1km long by 400m wide. These assays will be incorporated into an initial Mineral Resource Estimate for the Brama-Alba deposit later this year. The results from holes BMDD014 through 018 clearly show that higher grade mineralisation occurs in sub- domains within the larger 1.1km long Brama-Alba system, and that these higher-grade domains extend to surface.

The potential for Brama to host a substantial gold-copper porphyry system is being reinforced with ongoing drilling. There is also potential for this system to extend significantly to adjacent targets Melonal and Playas. These areas are expected to be drill tested in Third Quarter and Fourth Quarter 2022 respectively.

Sunstone Managing Director Malcolm Norris 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. Reasonable distance of available hydroelectric power, supporting the economics of potential development opportunities.

The project is also supported by nearby commercial airports and significant cities (Loja) and the project has strong community support. 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.

The majority of mineralisation 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 mineralised.

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 mineralised and it is planned to re-enter this hole and deepen it to test the possible extension of the deep mineralised 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 mineralised 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. Drilling at the Bramaderos project will continue throughout 2022 and be spread across several target areas. At Brama it is expected that 1 drill rig will continue drilling at least 5 holes for a total of 2,000m.

At Alba, at least 6 holes are planned for a total of 2,400m. Drilling will also be undertaken at Limon (commencing early June) and complete at least 6 holes for 3,500m. Planning for drilling is also underway at Melonal (located southwest of Alba) where at least one hole for 500m is expected.

The drilling programs at Brama and Alba will form the basis for an initial Mineral Resource Estimate (MRE). The goal of this MRE is to establish an initial resource estimate that can then be expanded as exploration continues at Brama-Alba and the other nearby targets such as Limon, Playas, and Melonal. The Brama-Alba system is currently at least 1,100m x 400m lateral dimension and has a vertical extent of at least 400m.

Mineralisation grade is variable within this envelope, as evidenced by today's announcement where discrete higher-grade sub-vertical cylinders are enclosed within broader mineralised diorite. Drilling at Limon is targeting chargeability and conductivity anomalies defined in the recently completed Spartan MT and Orion DCIP surveys, and geological follow-up to previously drilled high-sulphidation mineralisation which returned 59.6m at 0.16% copper, including 13.3m at 0.43% copper and 0.11g/t gold, and stockwork veining in surface trenches which returned 97.6m at 0.71g/t gold and 0.23% copper.