@inproceedings{inproceedingsa8f087d1, title = {Phlogopite from carbonatitic veins associated with the Poços de Caldas alkaline massif, SE Brazil: mineralogy and 40 Ar/ 39 Ar dating by the laser step heating method}, author = {Vlach, Silvio Roberto Farias and Vilalva, Frederico Castro Jobim and Ulbrich, Mabel N. C. and Ulbrich, H. and Vasconcelos, Paulo Marcos}, year = {2003}, publisher = {CBPM/IRD}, booktitle = {South American Symposium on Isotope Geology} }