Drilling Continues Limon And Bramaderos Main Prospects

OTTAWA - Cornerstone Capital Resources Inc. reported an update on its Bramaderos gold and copper project in southern Ecuador, which it is exploring together with ASX listed Sunstone Metals Inc. under a farm-in agreement. Highlights: The Phase 2 drilling program is designed to follow-up the highly promising results achieved in Phase 1; Drilling at Bramaderos Main underway with BMDD004 drilling below BMDD001 to test a 500m vertical extent of porphyry gold-copper mineralization; Drilling at Limon is about to commence -- drill hole LMDD005 is targeting a porphyry gold-copper system adjacent to, and beneath holes LMDD002 and LMDD004; & Drilling at West Zone just completed with 8 shallow holes - Results will be released once assays are received.

The Bramaderos Project comprises multiple gold-copper porphyry targets and an epithermal gold corridor. Receipt of assay results from drill holes at West Zone and Limon have been delayed due to laboratory delays. These are being managed and incorporated into future planning.

Vice President, Exploration, Yvan Crepeau said, ”It is still early days at the Bramaderos Project. Our Phase 1 drilling delivered a gold-copper porphyry at Bramaderos Main that shows potential for significant scale with mineralization extending from surface to at least 300m deep, and with a strike extent of at least 500m. Drilling now will focus on increasing the scale of this system. At Limon, we have intersected compelling 'near porphyry' alteration and mineralization in a very large system, with evidence in one drill hole of a shallow 'high sulphidation' copper-gold system. Follow-up drilling is aimed at intersecting both the shallow copper-gold system and the deeper main porphyry gold-copper zone. At the West Zone epithermal gold prospect, we have completed eight shallow holes which intersected a variety of host rocks and several zones of alteration. We need to wait for assay results before we can comment on the significance of the West Zone drill program."

Limon Prospect drill hole LMDD005 is currently being collared to test a porphyry gold-copper target. Importantly, the process for targeting hole LMDD005 has included further detailed review of all Limon datasets and has focused on a 3-D review of new ground magnetics data in the context of geological constraints provided by drilling results. It is still early days at Limon, has been established to be within a large alteration envelope to a porphyry system.

LMDD005 will also test for extensions to the shallow high-sulphidation epithermal copper-gold system intersected in LMDD004, and then drill to a final depth of ~1100m to test a magnetic anomaly approximately 800m below surface that is located adjacent to and below the intervals of most intense veining, alteration and gold-copper mineralization intersected in holes LMDD002 and LMDD004. LMDD002 intersected 14m at 0.2% copper, 0.1g/t gold, and 40.8ppm molybdenum at bottom of hole, with clear evidence of a porphyry gold-copper system. In addition to LMDD005, two more drill holes have been planned that will test targets that may be associated with outcropping gold-copper porphyry mineralization defined in trench LM-01 which intersected 97.6m at 0.71g/t gold and 0.23% copper.

The link between outcropping porphyry gold-copper mineralization (trench LM-01), shallow high-sulphidation mineralization at ~60m below surface in LMDD004, and deep porphyry mineralization in LMDD002 at 600m below surface, is being pursued with this exploration program and the next 3 drill holes.

Bramaderos Main Prospect final assays for hole BMDD002 have been received and, as predicted, the bottom of hole has returned low grade gold results. The copper assays are consistent throughout the hole, but the gold grade is lower at depth. This most likely represents multiple 'events' of mineralization and the target zone now becomes the domain on the north-eastern side of the diorite host rock. This is mapped out well at surface from extensive trenching with three higher grade domains defined. A north-west extension of the longitudinal trench is currently being prepared and sampled which is expected to extend the domain of surface mineralization. BMDD004 is currently at ~70m downhole and has intersected mineralization from 5m downhole comparable to that seen in the upper part of hole BMDD001. It is designed to test a 500m vertical section of the higher-grade domain (Figure 6) below hole BMDD001. Additional holes to be drilled include at least two holes on sections to the NW of BMDD001 and 004 testing the higher-grade zones in trenches over a strike length of 400m, a shallow hole to twin and extend historical hole CURI-03, and two holes under the main topographic high of Bramaderos Hill which exhibits extensive epithermal style alteration.

Drilling has just been completed and comprised 8 shallow diamond drill holes for 1200m. The West Zone target is an epithermal gold breccia system and the drilling program has been focused on follow-up to high-grade trench sampling and to determine the geometry of the breccia systems which host the mineralization at surface. From drilling it is clear that the geometry of the breccia bodies is complex, and other epithermal style veins and zones of alteration have been defined.