The first description of a VMS deposit in Cuba

What is it about?

We studied an outcrop of massive iron-copper-zinc sulphides in Cretaceous volcanogenic intermediate to felsic rocks, locatedto the south of the village of Los Tramojos,in the province of Sancti Spiritus, in Central Cuba. It is an artificial cut of dacitic tuffs and volcanic breccias with a strong mineralized area, dark, containing pyrite, magnetite, barite, sphalerite, bornite and others copper sulphides, and apatite, galena and chalcopyrite. This area includes another tectonic zone with limonitic, hematitic, zeolitic and chloritic alterations, in contact with tuffs and non-mineralized and fresh volcanic breccias. It is a manifestation of a submarine volcanic-exhalative type. The mineralized area described above are very like the so call "Black Ores"of the Kuroko type of deposits. We investigated an area of 3,000 m2using a soil grid of 25 x 10 meters, with some litho geochemical samples. This study allowed to determine the correlation coefficients characteristic of the ore zone. We recommend the use of these correlation coefficients, combined with geophysical and perforation work, to check ore potential of the Sector "Los Tramojos"

Featured Image

Photo by Ben Klea on Unsplash

Photo by Ben Klea on Unsplash

Why is it important?

This confirmed the existence of such type of deposits in Cuba and sets a program for studying them.

Perspectives