Clay
Revision as of 17:46, 29 January 2016 by Davo (talk | contribs) (Created page with "Category:Materials Category:Clay Category:Cold_Flow Clay is a fine-grained natural rock or soil material that combines one or more clay minerals with traces of me...")
Clay is a fine-grained natural rock or soil material that combines one or more clay minerals with traces of metal oxides and organic matter. Clays are plastic due to their water content and become hard, brittle and non–plastic upon drying or firing.