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Article

6 Citations

3,583 Views

25 Pages

The Hidden Magmatic Chamber from the Ponte Nova Mafic–Ultramafic Alkaline Massif, SE Brazil: Clues from Clinopyroxene and Olivine Antecrysts

Rogério Guitarrari Azzone,
Lina Maria Cetina Tarazona,
Mariana Robertti Ambrosio,
Vincenza Guarino,
Luanna Chmyz,
Nicholas Machado Lima and
Excelso Ruberti

Minerals2022, 12(6), 775;https://doi.org/10.3390/min12060775

18 June 2022

Clinopyroxene and olivine primocrysts in the intrusions of the Ponte Nova mafic–ultramafic alkaline massif (SE Brazil) present several textures and zoning that indicate open-system processes. Important compositional differences were found in th...

(This article belongs to the Section Mineral Geochemistry and Geochronology)

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Article

2,946 Views

26 Pages

Genesis of Fe-Ti-(V) Oxide-Rich Rocks by Open-System Evolution of Mafic Alkaline Magmas: The Case of the Ponte Nova Massif, SE Brazil

Amanda Andrade de Souza,
Rogério Guitarrari Azzone,
Luanna Chmyz,
Lina Maria Cetina Tarazona,
Fábio Ramos Dias de Andrade,
José Vinicius Martins,
Excelso Ruberti and
Celso de Barros Gomes

Minerals2024, 14(7), 724;https://doi.org/10.3390/min14070724

19 July 2024

The formation of Fe-Ti oxides-rich layers is commonly associated with open-system magma chamber dynamics. These processes are widely discussed due to the economic importance of Fe-Ti-(V) deposits, although an alkaline-system approach to the matter is...

(This article belongs to the Special Issue Advances in Mantle–Crust Interactions for Petrogenesis and Ore-Forming Processes)

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