Bramaderos Au Cu Project, Ecuador – Exploration breakthrough leads to identification of numerous higher grade gold-copper porphyry targets

Nachrichtenquelle: globenewswire
26.03.2020, 13:00  |  143   |   |   

Temporary suspension of activities at Bramaderos due to Coronavirus Precautions

OTTAWA, March 26, 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 project in southern Ecuador, which it is exploring together with ASX listed Sunstone Metals Inc. under joint venture agreement (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 ( or by clicking on the link below:


  • Detailed technical review leads to a breakthrough in understanding the multiple gold-copper porphyry deposits identified within the Bramaderos concession
  • The findings stem from a review of drilling results, more detailed magnetic data, and 3-D modeling
  • The evidence suggests that the porphyry systems exhibit pipe-like geometry similar to many other porphyry deposits, such as Northparkes in Australia, and others globally
  • Exploration to date had been based on the belief that the porphyries at Bramaderos have broad, widely disseminated geometries, which are common elsewhere such as in Chile


An in-depth review of all exploration data from Bramaderos has resulted in a breakthrough, that has led to the identification of numerous, compelling drill targets.

The review found that the higher-grade gold-copper porphyries exhibit pipe-like geometry, not broad, disseminated geometry as previously believed.

Some leading porphyries globally display this geometry, while many other porphyries, such as those in Chile and Asia, exhibit broader disseminated geometries (on which the original exploration model for Bramaderos was based).

These geometries for pipe-like or ‘pencil porphyry’ style porphyry gold-copper systems are not unusual and better-known examples include the Northparkes mine in NSW, the Skouries deposit in Greece, and the Boyongan deposit in the Philippines. These deposits are typically smaller individually but cluster as multiple deposits and deliver higher grades.

Cornerstone VP Exploration, Yvan Crepeau, said:

“Project operator Sunstone’s technical review of results to date from Bramaderos has delivered some compelling new interpretations of the gold-copper porphyry systems within the project. Some have been real ‘eye openers’ such as the detailed ground magnetics and associated 3-D modeling. In isolation this is a standard exploration evolution, but combined with our drilling results to date, and surface sampling we have every reason to be optimistic about discovery. The interpretation of the geometry of these porphyry systems has been improved, and the potential for building significant tonnes, and at higher grades is greatly improved.”

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