metal ammine complex copper(i), silver(i), and g(i) copper(i) forms only labile complexes with ammonia, including the trigonal planar [cu(nh 3) 3] +. silver gives the diammine complex [ag(nh 3) 2] + with linear coordination geometry. it is this complex that forms when otherwise rather insoluble silver chloride dissolves in aqueous ammonia.
exploring for g copper in arizonainitial g recovery using gravity separation yielded 89.3% recovery and formed a concentrate that assayed 2,477 g/t . further g extraction using cyanide yielded 99.6% total g recovery, and copper recovery via acid leach was 70.1% with moderate acid consumption
de re metallica de re metallica (latin for on the nature of metals [minerals]) is a book in latin cataloguing the state of the art of mining, refining, and smelting metals, published a posthumously in 56 due to a delay in preparing woodcuts for the text.the author was georg bauer, whose pen name was the latinized georgius agricola ("bauer" and "agricola" being respectively the german and latin words