Abstract
Considering auriferous regions of Brazil carrying production (1965-94) plus reserves over 101 metal and their geological settings, it may be advanced that the regions contain some primary gold deposit types normally represented in Precambrian shields, and some others, perhaps less commonly found elsewhere. Among the former are mesothermal lodes in greenstone belts and the like, disseminations in Paleoproterozoic orthoquartzitic conglomerates, and sediment-hosted ores, particularly in deformed Meso- to Neoproterozoic turbidite sequences. The latter includes deposits associated with medium to high metamorphic grade sequences as by- or co-product gold of strata-bound disseminated copper sulfides, or hosted by Paleoproterozoic graphite- and/or manganese-bearing metasediments, e.g. itabirites, or yet showing epizonal to epithermal features but located in intra-plate setting of Mesoproterozic age. A broad comparison between the different regions suggests that those exhibiting the greater variety of mineralization styles - that is to say, of productive geological settings - appear to be richer in gold. This is perhaps a significant aspect to be considered in trying to identify better-endowed gold provinces.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
