Cristiane Castañeda

TL;DR: The Araçuaí orogenic orogen extends from the eastern edge of the São Francisco craton to the Atlantic margin, in southeastern Brazil as mentioned in this paper, forming the Eastern Brazilian pegmatite Province and the most important dimension stone province of Brazil.

TL;DR: The Aracuai-west-Congo Orogen was defined as the southeastern limit of the Sao Francisco Craton in the classical paper published by Fernando Flavio Marques de Almeida as discussed by the authors.

TL;DR: The crystal-chemical behavior of tourmaline from Aracuai, Minas Gerais state, Brazil, when subjected to heating in air atmosphere has been studied by several techniques, including EMPA, UV-Vis, TGA, and Mossbauer spectroscopy.

TL;DR: For instance, in this article, a set of rochas of the Orogeno aracuai were evaluated in the presence of a plagiogranito and metamorogenesis, with an accuracy of 5.5 kbar.

TL;DR: In this article, electron paramagnetic resonance (EPR), optical absorption and infrared absorption were used to identify beryl molecules and their relation to color, and the results showed that the beryl samples are rich in Cs (3.30 wt.%) and contain low concentrations of transition-metal ions, in total ∼0.03 wt% Fe and ∼ 0.05 wt%.