Study practice has proved that the ultrahigh pressure metamorphic rocks iu Dabieshan must have exPerienced botk the retrograde metumorphism and partial melting
FROM the 1980s of this century, the very great advances in Precambrian geology and deposits, such as thefinding of Abitibi gold deposit in Quebec Province of C
THE mobilization and transport processes of gold are associated with gold complexes, such as hydroxides,chlorides, hydrogen sulfide, thiosulphate and organic m