Scawtite is a hydrous calcium silicate mineral with carbonate, formula: Ca7(Si3O9)2CO3·2H2O.

[3] Scawtite was first described in 1929 for an occurrence at Scawt Hill in Northern Ireland.

[3] Scawtite occurs as in skarns and hydrothermal veins in limestone.

Associated minerals include melilite, spurrite, tobermorite, thomsonite, larnite, grossular, bultfonteinite, calcite, analcime, foshagite and hillebrandite.

[2] This article about a specific silicate mineral is a stub.