1) Calcium mineral 
Tobermorite is a calcium silicate hydrate mineral with chemical formula: or Two structural varieties are distinguished: tobermorite-11 Å and tobermorite-14 Å. Tobermorite occurs in hydrated cement paste and can be found in nature as alteration mineral in metamorphosed limestone (e.g. in the Maqarin Area (North Jordan), or in Crestmore (Riverside...