Fe Type 20.5 carbonate 28.1 carbonate 27.8 carbonate 27.0 carbonate 28.0 carbonate 25.2 carbonate 25.3 carbonate 27.1 carbonate 20.5 carbonate 31.3 carbonate 26.3 silicate 24.0 silicate 26.2 silicate 20.2 silicate 23.7 silicate 34.0 silicate 17.1 silicate 26.8 silicate 23.7 silicate 24.9 silicate 29.5 magnetite 34.0 magnetite 27.5 magnetite 29.4 magnetite 27.9 magnetite 26.2 magnetite 29.9 magnetite 29.5 magnetite 30.0 magnetite 35.6 magnetite 36.5 hematite 44.2 hematite 34.1 hematite 30.3 hematite 31.4 hematite 33.1 hematite 34.1 hematite 32.9 hematite 36.3 hematite 25.5 hematite