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	- ＜ Refractory Materials and Abrasives - ＜ Garnet     Formula: Fe3Al2(SiO4)3 Typical Chemistry (Mine): SiO2 39.81%, Al2O3 20.72%, Fe2O3 18.35%, CaO 9.52%, MgO 9.12% TiO2 0.78%, P2O5 0.01%, MnO 0.36%, Na2O 0.73%, K2O 0.02% Ore Chemical Composition: Almandine                93% min Feldspar & Quartz   4% max Biotite & others       3% max Specific Gravity:    3.6-4.2 g/cm3 Modulus Hardness: 7-7.5