DISTRIBUIÇÃO E ASPECTOS METALOGENÉTICOS DAS OCORRÊNCIAS DE SCHEELITA NO PRÉ-CAMBRIANO DO ESTADO DE MINAS GERAIS, BRASIL

Abstract

This paper presents a general description of six scheelite mineralized areas in Minas Gerais State,southeastern Brazil:- Nazareno - São João Del Rei - Lagoa Dourada area where scheelite occurs confined to orthoamphibolitic rocks of the Barbacena Greenstone Belt;- Iron Quadrangle area where most scheelite occurrences are related to a auriferous shear zones of theNova Lima Group of the Rio das Velhas Greenstone Belt;Itinga - Coronel Murta - Rubelita area in the Araçuai Fold Belt where scheelite is present in calcsilicaterocks interlayered with metasedimentary schists of the Macaubas Group and in quartz vein withwolframite;- Galiléia-Mendes Pimentel area in Costeiro Fold Belt where scheelite mineralization occurs in calcsilicatelayers and quartz veins, in schists of the São Tomé Group;- Itamonte - Itanhandu area in the Ribeira Fold Belt where scheelite is related to greisen of leucocraticgranitoids cupolas;- Rio Manhuaçu - Mutum area in the Costeiro Folded Belt where the scheelite mineralization ispresent in calc-silicate xenoliths associated with granitic rocks of the Pocrane Complex.