| Reference | {Deposit:: SCHMITT, H., 1930, GEOLOGY OF THE PARRAL AREA OF THE PARRAL DISTRICT, CHIHUAHUA, MEXICO: AMERICAN INSTITUTE MINING AND ENGINEERING TRANSACTIONS, P. 268-290.}{Deposit:: SOCIEDAD GEOLOGICA MEXICANA A.C., 1985, PLANO GEOLOGICO MINERO DE CHIHUAHUA, MEXICO: CONSEJO DE RECURSOS MINERALES AND FEDERAL GOVERNMENT OF MEXICO D.F., 1 SHEET, SCALE 1:500,000.}{Other Database:: CIMRI} |