00485nas a2200073   4500008003900000245026000039210006900299856004300368       1999                          d00aHARMER, R.E. 1999. The petrogenetic association of carbonatite and alkaline magmatism: constraints from the Spitskop complex, South Africa. Journal of Petrology, 40: 525-48.STRAUSS, C.A. and TRUTER, F.C. 1950a. The alkali complex at Spitskop, Sekukuniland0 aHARMER RE 1999 The petrogenetic association of carbonatite and a  uhttps://alkcarb.myrocks.info/node/7422