The iron oxide deposits of the Casa de Pedra mining complex are located within the Quadrilátero Ferrífero, an area of approximately 7,000 km2 within the San Francisco Craton in the central part of Minas Gerais, Brazil.
The Minas Supergroup includes four groups: Caraça, Itabira, Piracicaba and Sabará. The thickest sequence of banded iron formation (BIF) with economically exploitable high-grade iron oxides belong to the Itabira Group, which consists of itabirites, dolomites and subordinately, metapelites. The itabirites are metamorphosed and strongly oxidized iron formations with discontinuously high iron contents, a more or less lenticular morphology and dimensions ranging from a few decimeters to hundreds of metres (Rosiére and Chemale, 2000).
The iron formations of economic interest in the property are hosted within the Minas Supergroup, Itabira Group and Cauê Formation.
The area of the Casa de Pedra mining complex is characterized by several occurrences of iron oxide, where the main hematitic bodies occur as lenses in the northwest-southeast direction. These lenses are present along a 50 km synformal structure, with a normal flank in a north-south direction to the west and an inverted flank to the east, surrounding the Bação Metamorphic Complex in the south. The Casa de Pedra mining complex is located on the western hinge of the Sinclinal Moeda.
The Casa de Pedra mining complex area has undergone three deformational events which ........
