GALENA CHALCOPYRITE SPECIMEN
Large Galena Chalcopyrite Specimen. Large and very heavy ore of Lead and Silver with a sprinkling of Chalcopyrite. Stunning colour contrast of very reflective silver and gold. A great mineral specimen for the beginner or advanced collector.
14.3cm x 10.2cm x 6cm, 2059g.
Galena is the primary ore mineral of lead. Worked for its lead content as early as 3000 BC, it is found in ore veins with Sphalerite, pyrite, Chalcopyrite, Tennantite Tetrahedron, etc. and in skarns, as well as in sedimentary rocks where it may replace carbonate beds or be deposited in pore spaces. The crystals are bright when fresh but often tarnish after exposure to air. A secondary ore of Silver containing up to 3%.
A major ore of copper. Common in sulfide veins and disseminated in igneous rocks.
Weathering may lead to the formation of malachite, Azurite, Brochantite, Langite and numerous other secondary copper minerals.