GRIFFIN, W.L.; O'REILLY, S.Y.; RYAN, C.G.; WALDMAN, M.A. Indicator Minerals from Prairie Creek and Twin Knobs Lamproites: Relation to Diamond Grade. International Kimberlite Conference: Extended Abstracts, [S. l.], v. 5, p. 139–141, 1991. DOI: 10.29173/ikc2491. Disponível em: https://ikcabstracts.com/index.php/ikc/article/view/2491. Acesso em: 25 apr. 2024.