TY  - JOUR 
T1  - Origin of the reduced, amethyst-mineralized lower tier of the Cordillera Flow, southern Paraná Volcanic Province
JO  - Brazilian Journal of Geology
A1  - Hartmann, Léo Afraneo
A1  - Renner, Leonardo Cardoso
SN  - 2317-4889
UL  - 10.1590/2317-4889202520250007
VL  - 55 
Y1  - 2025
PB  - Brasil 
ER  -