00485nas a2200073   4500008003900000245026000039210006900299856004300368       2000                          d00aALBERTI, A., CASTORINA, F., CENSI, P., COMIN-CHIARAMONTI, P. and GOMES, C.B. 2000. Geochemical characteristics of Cretaceous carbonatites from Angola. Journal of African Earth Sciences, 29: (in press).ALLSOPP, H.L. and HARGRAVES, R.B. 1985. Rb-Sr ages and0 aALBERTI A CASTORINA F CENSI P COMINCHIARAMONTI P and GOMES CB 20  uhttps://alkcarb.myrocks.info/node/6838