La Zarza-Calanas

STATISTICS BULLETIN, PUBLISHED BY THE SPANISH NATIONALINSTITUTE OF STATISTICS, MINISTRY OF ECONOMY AND COMMERCE,NO. 437 SEPTEMBER-OCTOBER 1982.ESTADISTICA MINERA DE ESPANA; PUBLISHED BY THE MINISTRYOF INDUSTRY AND ENERGY FOR THE YEAR 1981.PROGRAM NACIONAL DE EXPLOTACION MINERA, PUBLISHED BY THEMINISTRY OF INDUSTRY (DIRECTION GENERAL DE MINAS), 1970.CAMARA OFICIAL MINERA DE HUELVA; PYRITE PRODUCERS YEARLYREPORTS 1967-1982.SEE THE "R" REFERENCES.G. K. STRAUSS, J. MADEL AND F. FERNANDEZ ALOSNO; EXPLORATIONPRACTICE FOR STRATE-BOUND VOLCANOGENIC SULPHIDE DEPOSITS INTHE SPANISH-PORTUGUESE PYRITE BELT: GEOLOGY, GEOPHYSICS,AND GEOCHEMISTRY; SPRING ER VERLAG, BERLIN HEIDELBERG, NEWYORK, 1977.G. K. STRAUSS, K. G. GRAY; THE INTERNATIONAL OUTLOOK FORSPANISH PYRITES; FIFTY IMI CONGRESS MADRID, SPAIN, APRILG. K. STRAUSS, G. ROGER, M. LECOLLE, AND E. LOPERA;GEOCHEMICAL AND GEOLOGICAL STUDY OF THE VOLCANO-SEDIMENTARYSULFIDE OREBODY OF LA ZARZA, HUELVA PROVINCE, SPAIN."COPPER FROM SPAIN'S PYRITE BELT", METAL BULLETIN MONTHLY,JUNE 1982.BRITISH SULPHUR CORP. LTD., "WORLD SURVEY OF SULPHURRESOURCES", SECOND EDITION, 1974.RESOURCES", THIRD EDITION, 1985.