| Menge, G. F. W. (1986). Sodalite carbonatite deposits of Swartbooisdrif, South West Africa/Namibia. In Mineral deposits of Southern Africa (pp. 2261-2268). Ferguson, J. O. H. N., McIver, J. R., & Danchin, R. V. (1975). Fenitisation assocated with the alkaline-carbonatite complex with Epembe, South West Africa. South African Journal of Geology, 78(1), 111-121. https://journals.co.za/doi/pdf/10.10520/AJA10120750_1217 |