Northeast of Brazil is situated in the polygon of drought. It covers some very important states like Bahia,Pernam- buco, Paraiba, Rio Grande do Norte, Cea- ra and Piaui , which have a potential for mineral production. Of them the main contributions that comes from Rio Grande do Nor to , Ceara and Paraiba are the scheelite and im portant quantities of granitic pegmatite mine- rals like tantalite-columbites, micas, beryls, precious stones, lithium minerals etc. On the other hand flourishing mineral economy in gold, tin, emeralds, chromium, lead, apatite is most- ly from Bahia; and potassium, salts, and petro- leum are from Sergipe, Alagoas and Bahia res; pectively. The most interesting aspect coninues to be the nucleus of the drought zone constituted of the Rio Grande do Norte, Paraiba and Ceara sta- tes.The first two authors have worked for twel- ve years in the region and have dedicated atten tion and time to two systems, namely skarns and granitic pegmatites. Their mineralogy,petrogra- phy, geochemistry, origin and economy is being worked upon from time to time to accompany the progress that is being achieved both in the sec tors of geology and economy. Besides, during the field campaigns, evidences have been sought to find the best guide horizons for mineralisa- tion and options for the location of target areas and prospection methods for scheelite, tantalites and other pegmatite minerals.