They display two dominant REE patterns. Medium-K GMS rocks (the Dalmeinand portions of Heerenveen) are LREE-enriched, HREE-depleted and have no Eu-anomalies, whereas, the high-K GMSs (Heerenveen, Mpuluzi and Boesmanskop) are relatively HREE-enriched with negative Eu anomalies.
The rocks exhibit two distinct rare earth element patterns: Medium-K GMS rocks (Dalmeinand portions of Heerenveen) show LREE enrichment, HREE depletion, and lack Eu anomalies; high-K GMSs (Heerenveen, Mpuluzi, and Boesmanskop) are enriched in HREEs with negative Eu anomalies.