Properties of Websterite and Icelandite play an important role in determining the type of rock. Along with Websterite vs Icelandite properties, get to know more about Websterite Definition and Icelandite Definition. For the ease of understanding, the properties of rocks are divided into physical and thermal properties. Rocks have a variety of properties like hardness, color, specific gravity, fracture, cleavage, luster etc. Know all about physical and thermal properties of Websterite and Icelandite.