Burnt Steatite Definition: Burnt or charred steatites are formed when a volcanic rock is heated and cooled during the eruption of a volcano. They are usually formed from lava or magma, but some can also form from ash and other materials.

Porcelana definition of porcelania,steatite,pietra definition,stoatite definition source The Australian article Porcellana Definition: The definition of the word porcelanana refers to…