Grütter, H.S., and D.B. Apter. “Kimberlite-and Lamproite-Borne Chromite Phenocrysts With ‘diamond-Inclusion’-Type Chemistries”.
International Kimberlite Conference: Extended Abstracts
, vol. 7, no. 1, Apr. 1998, pp. 280-2, doi:10.29173/ikc2709.