Petrological and geochemical studies of alkaline rocks from continental Brazil: the juquia intrusive alkaline -carbonatite complex, State of São Paulo - Macciotta, Giampaolo; Barbieri, Mario; Beccaluva, Luigi; Born, Helmut; Brotzu, Pietro; Conte, Aida; Garbarino, Carlo; Gomes, Celso B.; Morbidelli, Lucio; Ruberti, Excelso; Siena, Franca; Traversa, Gianbosco (International Conference Geochemical Evolution of the Continental Crust, 1988)