Tag: mining meme

Porphyry Beer

Porphyry deposits and Beer having something in common.  Porphyry ore deposit form in large intrusions that acted as magma chambers feeding active volcanoes. You will remember that as the magma chamber cools from the outside inwards, barium, feldspar and quartz crystalize out so that the remaining melts becomes enriched in metals and volatiles. The volatiles […]