00485nas a2200073   4500008003900000245026000039210006900299856004300368       1994                          d00aDAWSON, J.B. 1994. Quaternary kimberlite volcanism on the Tanzania Craton. Contributions to Mineralogy and Petrology, 116: 473-85.J.B. Dawson, pers. comm., 1989.DAWSON, J.B. and HAWTHORNE, J.B. 1973. Magmatic sedimentation and carbonatitic differentiation0 aDAWSON JB 1994 Quaternary kimberlite volcanism on the Tanzania C  uhttps://alkcarb.myrocks.info/node/7605