Bornite from Capillitas vein, Capillitas mining district, Catamarca Province, Argentina

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Eight chips of metalliferous vein material from La Rosario mine, Capillitas mining district, Argentina are mounted in a polished block where they are visible on a cut and polished surface. These chips contain a wealth of extremely rare species, including two primary germanium-bearing species: Briartite and Catamarcaite; along with a thallium-bearing mineral - Thalcusite. The other main mineral present is Bornite but this pales into insignificance compared to the other rarities. There are very few germanium-bearing mineral species known to science and La Rosario mine is one of the few places where they occur in significant amounts. Catamarcaite was first described from Capillitas in 2006, and has never been found anywhere else on Earth. Briartite is a little more 'common', having been reported from 15 localities, but recent studies appear to suggest that this material from Capillitas is a new species Zincobriartite but the full details are awaiting publication. A fine assemblage of extreme rarities but as with all polished ore sections reflected light microscopy is really required to appreciate them.

Product details

SpeciesBornite

SizeMiniature

Dimensions3.0 x 3.0 x 1.5 cm

Added on06/26/2025

LocalityArgentina, Catamarca Province, Capillitas vein

Owners

Unknown Owner

Current owner

Acquired: Jan 2026
Price paid: $200.00

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Mineral guide

Learn about Bornite

vivid iridescent tarnish, metallic luster, and rare sharp crystals; formed in diverse deposits and prized by collectors for color, rarity, and histor…

Regional guide