ba, granitóides de miguel calmon e mirangaba. - Universidade ...

ABSTRACT
The granitoides Paleoproterozoic study can be found in the central-southern Sierra de
Jacobina, including Granitóides de Miguel Calmon (GMC) and Mirangaba (GMR). They are
intrusive bodies in Mairi Complex, state associated with the Complex Itapicuru, Jacobina
Group and Surface Formations.
It is elongated bodies, uniforns, which dominate monzonitos and granodiorite pink to
gray in color, generally porfhyritic, and the main paragenesis consists of plagioclásio, quartz,
microclina, biotite, muscovite and opaque minerals.
The geochemical data positioned as post-granite origin, and the GMC as type I and
GMR as type S. They are weakly peraluminosos, subsolvs the type of calcium-alkaline series.
Through geological parameters, petrographic, geochemical and geotectônicos could
classify and compare the especialisition and potential metalogenetic of granitoides, where the
Granitoide of Miguel Calmon presents with low potential metalogênetico, while the
Granitóide of Mirangaba classifies itself as the good metalogenetic potential.
Key words: Granitoide, Potential and Metalogenetic.
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