It is chemical having chemical formula 3bao*al2o3.
Ca (calcium mono-aluminate) is the principal hydraulic mineral present in calcium alumina cement. Its hydration contributes to the high early strength of cacs. Calcium mono-aluminate is a monoclinic phase, pseudo-hexagonal its space group is p21/n, z=12 and dx= 2. 945 g/cm-3. It resembles the structure of b-tridymite with an infinite three-dimensional framework of alo4 tetrahedra sharing corners.
Strontium aluminate (sra, sral, sral2o4) is a solid odorless, nonflammable, pale yellow powder, heavier than water. It is chemically and biologically inert. When activated with a suitable dopant (eg. Europium, then it is labeled sral2o4:eu), it acts as a photoluminescent phosphor with long persistence of phosphorescence. Its cas number is [12004-37-4].