Espiritu trench at Bramaderos Au-Cu Project (Ecuador) exposes gold-silver polymetallic veins intersecting 4m at 415g/t silver, 0.9g/t gold, 6.9% zinc and 6.0% lead

OTTAWA, July 13, 2020 (GLOBE NEWSWIRE) -- Cornerstone Capital Resources Inc. (“Cornerstone” or “the Company”) (TSXV-CGP) (F-GWN) (B-GWN) (OTC-CTNXF) is pleased to provide an update on its Bramaderos gold and copper joint venture in southern Ecuador in which it has a 12.5% interest carried by JV partner and project operator Sunstone Metals Inc. (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:

http://www.cornerstoneresources.com/i/pdf/NR20-16Figures.pdf.

HIGHLIGHTS:

• Exploration at the Bramaderos gold-copper project in Ecuador has resumed with a staged re-entry consistent with covid-19 protocols
   
• The initial focus is on the Espiritu gold-silver target where the first trench has been completed and intersected gold-silver polymetallic veins intersecting 4m at 415g/t silver, 0.9g/t gold, 6.9% zinc and 6.0% lead
   
• This follows previously reported rock chip and float sampling that returned results of 4.2g/t gold and 101g/t silver, 11.9g/t gold and 175 g/t silver, and 11.6g/t gold and 2,962g/t silver
   
• The Espiritu target, defined on the basis of gold and silver soil anomalies with supporting rock chip samples extends over an area of 800m x 600m with what appears to be multiple parallel mineralized structures
   
• The trenching program is ongoing at Espiritu in preparation for a resumption of drilling in September
   
• 12 other gold-silver targets are also being followed up including target E1, with more detailed soil sampling, including target E1 which has historical rock chip sampling returned results of up to 32.5g/t gold, 271g/t silver and 0.16% lead ¹
   
• Drill targeting and follow-up surface exploration over 5 porphyry targets is progressing well, and drilling at the Brama and Porotillo porphyry gold-copper targets is expected to begin in September

FURTHER INFORMATION:

The initial work program is focused on the Espiritu gold-silver target (Figures 1 & 2). The results from the first trench sampling program have been received and are shown in the table below. The system is interpreted to be a gold-silver polymetallic vein system (see below for technical explanation). Multiple targets within the broader Espiritu anomaly have been identified for further soil sampling, trenching and drilling.