3005 Stein Sillimanite B 15/2
— 15/08/2022Found by Ian Suddaby at the old Manuel Works, Whitecross. This example is not in my possession. Stein Sillimanite – this has high alumina content. AL2O2 – S1O2. Melting point 1545 C. This is an aluminium silicate material. On heating to 1545 C, it breaks down to mullite and a siliceous glass. Benjamin Silliman. Stein,…