Breadcrumb Home 8A70.06 - Refractory Minerals Code Number: 8A70.06Demo Title: Refractory MineralsCondition: ExcellentPrinciple: Mineral CompositionsArea of Study: AstronomyEquipment:Refractory Minerals and FirebricksProcedure:Discuss the different materials and what makes them refractory mineral. Firebricks are also available.