Tinted detail of a photo: Polarised-light micrograph of a large bright blue crystal with a dark rim and cracks, surrounded by a dense mesh of small needle-shaped crystals in pink, yellow and blue.
GMPV
Geochemistry, Mineralogy, Petrology & Volcanology

João Mata

João Mata is a researcher at the Instituto Dom Luiz, former Associate Professor at Faculdade de Ciências da Universidade de Lisboa (Portugal). His main research focused on Petrology and Geochemistry of within-plate magmatism. You can contact him via e-mail (jmata@ciencias.ulisboa.pt).