Specifications: Brunt dolomite specifications has given below. 1. Calcium Oxide Cao - 55 min 2.Magnesium oxide mgo - 33 min 3.Silicon Dioxide Sio2 - 3.0 max 4.Aluminium oxide AI203- 2 max 5. LOI - 7 max 6. Grain Size - a. >mm- 0.0 max b 15-70 mm - 90 min c. < 15 mm- 10 max .