Tags: Chemical Substance, Mineral.
Not to be confused with torbernite a hydrated copper uranyl phosphate.Tobermorite is a calcium silicate hydrate mineral with chemical formula: Ca5Si6O16(OH)2·4H2Oor Ca5Si6(OOH)18·5H2OTwo 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.