TY  - JOUR 
T1  - New method of semi-automatic modal analyses for phenocrysts of porphyritic rocks based on quantitative digital colour specification technique
JO  - Rem: Revista Escola de Minas
A1  - Motoki, Akihisa
A1  - Petrakis, Giannis Hans
A1  - Soares, Rodrigo
A1  - Sichel, Susanna Eleonora
A1  - Aires, José Ribeiro
SN  - 0370-4467
UL  - 10.1590/S0370-44672007000100003
VL  - 60 
Y1  - 2007
PB  - Brasil 
ER  -