Metallurgical Results For Arizaro Project

VANCOUVER, BC - Goldrock Mines Corp. has received initial metallurgical test work results for the Arizaro project. Arizaro is a gold-copper porphyry discovery located 3 km southeast of Goldrock's 100% owned and fully permitted developmental stage Lindero gold deposit, located in Northwestern Argentina.

With the view to potentially utilizing the Lindero heap leach processing facility, preliminary metallurgical testing was conducted to start profiling leaching behavior of the typical Arizaro medium to high grade mineralization. This metallurgical test work was undertaken by Kappes, Cassiday and Associates in Reno, Nevada.

Four cyanide bottle roll test results were conducted on both fresh and oxide mineralization and show very favorable coarse fraction gold recoveries of between 64% and 73%. These recoveries are in a range typical of the early bottle roll test work for the Lindero deposit, and provide a preliminary indication that the Arizaro mineralization is amenable to heap leach gold extraction.

Diamond drill core samples were crushed to 80% passing 9.5 mm mesh, which is the nominal ore crush size for the designed crushing circuit at Lindero. The composites were prepared to produce representative samples of medium and high gold grades for oxide (weathered) and fresh (non-weathered material) portions of the Arizaro mineralization. Cyanide bottle roll metallurgical tests were then run on the sample composites at 1000 ppm cyanide concentrations for more than 50 days at a pH of 10.5.