The tinguaite from Jaboticabal, SP, is anearly elliptical body (300 x 100 m) intrusive into the Paraná basalts (São Bento Series). It was discovered during a soil surveying at the área, in wich under similar geomorphological conditions - a lithosoil spot (overlaying the tinguaite), surrounded by a latosoil (derived from the basalts), was developed. Macroscopically the tinguaite is a hard, phaneritic rock dark gray to green in color. Microscopically it is fine to médium grained, with textures ranging from equigranular to porphyritic poiquilitic. Nepheline, K-feldspar (sanidine), pyroxene (Na-augite) and analcite are the main minerais. Ti-augite, magnetite, sphene and aenigmatite make up the most common acessories. Zircon, Na-amphibole, apatite, perowskite, andradite and natrolite have also been found. Previous work done in the área suggests a correlation between the tinguaitic intrusive from Jaboticabal and the recently discovered analcimitic lavas interbedded within the Bauru Sandstone at Taiúva, Piranji and Aparecida do Monte Alto. The Authors present new mineralogical, petrographic and chemical data supporting that correlation
