stripes
The Sacramento complex consists of a sequence of alkali basaltic flows, tuffs, breccias, dykes and plugs of Cretaceous age. Near Sacramento the rocks outcrop as bentonitic laterites, but fresh rock obtained by drilling contains leucite and has been described as ugandite and as 'akin to micaceous kimberlite'. It is poorly known.
BARBOSA, O., BRAUN, O.P.G., DYER, R.C. and CUNHA, C.A.B.R. da, 1970. Geologia da regiao do triangulo Mineiro. Boletim, Departamento Nacional de Producao Mineral. Divisao de Fomento da Producao Mineral. Rio de Janeiro, 136: 1-140.
MURTA, R.L.L. 1965. Nota preliminar sobre a leucita de Sacramento - M.G. Anais da Academia Brasileira de Ciencias, 37: 463-70.
ULBRICH, H.H.G.J. and GOMES, C.B. 1981. Alkaline rocks from continental Brazil. Earth Science Reviews, 17: 135-54