@inproceedings{inproceedingsa9bc3256,
title   = {Hiortdahlite, lavenite and wohlerite from nepheline microsyenite dykes of Monte de Trigo island alkaline complex, southeastern Brazil},
author = {Enrich Rojas, Gaston Eduardo and Ruberti, Excelso},
year = {2004},
publisher = {IUGS,},
booktitle   = {International Geological Congress}
}