Petrological implications of melanite in the rocks of the Morro de São João Alkaline Complex, Casimiro de Abreu, Rio de Janeiro, Brazil

Petrological implications of melanite in the rocks of the Morro de São João Alkaline Complex, Casimiro de Abreu, Rio de Janeiro, Brazil

Abstract This article presents a study of the titanium-rich andradite garnet, melanite, which occurs in the rocks of the Morro de São João Alkaline Complex, of Paleocene age, located in the district of Casimiro de Abreu, southeast of the state of Rio de Janeiro, Brazil. The complex comprises felsic...

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Bibliographic Details
Main Authors: Mariana Bessa Fagundes, Anderson Santos, Mauro Geraldes, Sérgio de Castro Valente, Eliane Guedes, Theresa Rocco Pereira Barbosa, Júlio Lopes
Format: Article
Language:English
Published: Sociedade Brasileira de Geologia 2025-01-01
Series:Brazilian Journal of Geology
Subjects:
alkaline magmatism
melanite
titanium-rich andradite
compositional zoning
disequilibrium textures
oxygen fugacity
mantle metasomatism
crustal assimilation
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2317-48892024000300300&lng=en&tlng=en
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