Sunstone Metals Ltd. announced more strong assays which continue to expand the size of its Brama-Alba porphyry discovery in southern Ecuador. These assays will be incorporated into an initial Mineral Resource Estimate for the Brama-Alba deposit later this year. The results from all holes drilled at Brama-Alba show that higher grade mineralisation occurs in sub-domains within the larger 1.2km-long Brama-Alba system and that these higher-grade domains cluster in the upper 400m.

The results provide more firm evidence that Brama hosts a substantial gold-copper porphyry system. There is also potential for this system to extend significantly to adjacent targets Melonal (west) and Playas (east). These areas are expected to be drill tested in 2022.

Gold equivalent results from all Sunstone drill holes at Brama-Alba are shown in Table 2 and clearly show the broad significant grades identified in this deposit. Early-stage metallurgical testwork completed on a range of mineralisation styles from the Brama-Alba gold- copper porphyry deposit was undertaken by Base Metallurgical Laboratories in Kamloops, British Columbia. Sighter metallurgical test work completed on the breccia and diorite lithologies, of the Alba and Brama deposits, yielded very encouraging results.

The results indicate that recoveries in excess of 86% for copper and 88% for gold can be achieved with a combined flotation and leach circuit when targeting a saleable concentrate grade of above 20% copper. Further test work, including alternative reagent and grind size regimes, will focus on improving recovery responses in a flotation-only circuit configuration to determine whether that configuration is feasible. Additional optimisation testing of the current flotation-leach selection, to further improve recoveries, will also be conducted.