Quadrilatero Ferrífero

Tags: archean bif graphite greenstone belt proterozoic schist

Description:

Iron Quadrangle (Quadrilatero Ferrífero), which is a geotectonic unit at the southern edge of the São Francisco Craton, comprising Archaean and Proterozoic terrains, and bordered by Neoproterozoic mobile belts. Cuiabá Mine is located in the eastern extension of the Serra do Curral inverted homocline, located on the northeastern edge of the Iron Quadrangle. The mine lithostratigraphy consists of an intermediate metamafic sequence of the greenstone belt type and is hosted in the Nova Lima Group which is part of the Rio das Velhas Supergroup. This sequence is characterised by metametabasaltic rocks at the base, overlain by Algoma Type BIF metasediments, carbonaceous schist, and graphitic schist. Above the metasediments is a sequence of metabasalts overlain by an alternating sequence of metapelites (X1) and metapsamitic rocks with minor volcanoclastic (XS). The gold mineralisation occurs in sulphide orebodies associated mainly with BIF layers, and subordinate to minor quartz veins hosted in schists.

Simplified geologic-structural map of the Quadrilátero Ferrífero showing the location of the Cuiabá Mine and other BIF-hosted gold deposits

Deposits

• Name: Cuiaba

  Phase: Operations

  Mine Type: Underground

  Intro:

  The Cuiabá Gold Deposit is located in the northern part of the Quadrilátero Ferrífero, Minas Gerais State, Brazil.

  detailed

Mineralizations

No mineralizations available.

Placers

No placers available.