Technofile: Geology for Potters
Rocks
Rocks can be classified into three types: igneous, metamorphic, and sedimentary. The igneous rocks most useful to potters are felsic … Read More
Tag: cordierite
2MgO×2Al 2O3×5SiO2—magnesium/aluminum silicate clay mineral, used to make grog for refractory products—promotes formation of mullite. Source: Clay: A Studio Handbook
