ARIZONA: America's Richest Mineral Province--PART I: Common Collector Minerals of the Grand Canyon State

摘要

California has its gold and Michigan had its copper, but no state can boast as great a variety of minerals suited for industrial and collector use as Arizona. You may think that copper was the trigger that brought prospectors to Arizona. Actually, it was the search for the precious metals silver and gold, which goes back to the days when Spanish adventurers sought the fabled Seven Cities of Cibola whose buildings were supposed to be made of gold! Native Americans were not so concerned with gold, but eagerly sought the blue "sky stone" turquoise.