Commodities
PrimaryIron
SecondarySilica, Ferrosilicon, Phosphorus-Phosphates
TertiarySulfur
Commodity typeB
Deposit
Model158: Volcanic-hosted magnetite
Deposit sizeS
Orebody formLENTICULAR
Ore controlFault - Proximal To Sinistral Romeral Fault. Mineralization Pattern Suggests That Ore Deposition Commenced Near Romeral Fault And Shifted Eastward And Upward Until Waning Stages When It Retreated To Central And Lower Portions Of Deposit.
Materials
Ore mineralsHematite, Magnetite, Martite
GangueActinolite, Apatite, Calcite, Clinozoisite, Diopside, Pyrite, Scapolite, Tourmaline
Geology
Host rockDiorite,Hornfels,Skarn (Tactite),Volcanic Rock (Aphanitic),Andesite
Associated rockDiorite,Andesite
StructureDioritic Batholite; Southern Termination Of Atacama Fault System, Post-Mineral Dextral Movement On Fault To Northeast
Tectonic settingRoof Pendant
AlterationPropylitic
Economic & production
Development statusPast Producer
First production1955
Identification
Deposit ID10106138
MRDS IDW029812
RegionSA
Data scoreB
Coordinates-29.7108, -71.24788
References
RUIZ FULLER, C., 1965, GEOLOGIA Y YACIMIENTOS METALIFEROS DE CHILE, EDITORIAL UNIVERSITARIA 1965ALVARADO, BENJAMIN, 1970, IRON ORE DEPOSITS OF SOUTHAMERICA, IN SURVEY OF WORLD IRON ORE RESOURCES -- OCCURRENCE AND APPRAISAL: NEW YORK, UNITED NATIONS, P. 302-380SKILLINGS' MINING REVIEW, MARCH, 1976.RUIZ, C. AND PEEBLES, F., 1988, YACIMIENTOS METALIFEROS DE CHILE: SANTIAGO, 334 P.BOOKSTROM, A.A., 1977, THE MAGNETITE DEPOSITS OF EL ROMERAL, CHILE: ECON GEOL. 72, 1101-1130.CIMRITHE ANNUAL PRODUCTION FIGURES ARE FROM SKILLINGS' MINING REVIEW, 1976.