The highest grade of 7.0% copper came from a narrow vein located 1,550 m northwest of the historic Cristinas mines.
Quetzal Copper Corp., a copper-focused exploration company, announced surface rock sampling and geophysical study results at the Cristinas project in Chihuahua.
The company sampled 3.8 M of 2.4% copper associated with an emerging markets geophysical target extending to 350 meters depth at the project.
“It has the key characteristics of high copper grades and size potential demonstrated by the electromagnetic geophysical study. Like our Princeton project in British Columbia, the Cristinas project highlights Quetzal’s ability to acquire projects that far exceed the quality we see from many junior copper exploration companies,” said Matthew Badiali, CEO of Quetzal Copper.
As part of the project’s due diligence, the company collected 18 rock chip samples in potential target areas around the historic Cristinas Mine. The mine operated on a small scale up to 50 m below the surface in the 1950s.
Drilling
Due diligence surface rock sampling results of 18 samples returned values ranging from <0.1 to 7.0% copper, primarily in copper oxides. Only four of the eighteen samples returned less than 1.0% copper. The highest grade of 7.0% copper came from a narrow vein located 1,550 m northwest of the historic Cristinas mines.
The team only found one vein with enough exposure to collect multiple samples across it. It was in the historic area of the mine. Sampling resulted in a true width of 3.8 m (TW, based on mapped vein geometry) grading 2.42% Cu and 162 g/t Ag.
Another notable aspect of the sampling program is the areas with significant cobalt grades. Cobalt appears to correlate with high copper grades in some areas. Cobalt has the potential, along with silver, to contribute to the economic value of the mineralization at Cristinas.