McIver J, Ferguson J. Kimberlitic, melilititic, trachytic and carbonatitic eruptives at Saltpetre Kop, Sutherland, South Africa. IKC abstracts [Internet]. 1977 Sep. 12 [cited 2024 Jul. 22];2(1):212-4. Available from: https://ikcabstracts.com/index.php/ikc/article/view/995