Nickel, K.G. 1986. Garnet-pyroxene and orthopyroxene-clinopyroxene equilibria in the system SiO2-MgO-Al2O3 CaO-Cr2O3 (SMACCR): A new geobarometer. International Kimberlite Conference: Extended Abstracts. 4, 1 (Sep. 1986), 296–296. DOI:https://doi.org/10.29173/ikc1149.