“…The ore mineralogy consists of pyrite with lower amounts of chalcopyrite, sphalerite, and galena along with Au-Ag alloy, native gold, and a range of Ag sulfides and sulfosalts as precious metal-bearing minerals [35][36][37]. The gangue consists mainly of quartz, muscovite, and chlorite, with lesser barite, gypsum, and dolomite [38]. Apatite crystals are also found in small quantities in three different positions: within the orebody, within the hydrothermally altered host rocks with sericitic-chloritic and propylitic alteration, and in the unaltered host volcanic rocks (calc-alkaline andesite and dacite).…”