GRST 321 Lecture Notes - Lecture 24: Glass-Ceramic, Neolithic, Magnetite
16 Nov 2017
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Document Summary
Often called the wastepaper of antiquity because of the vast amounts of broken pottery that is found in archaeological sites. Ceramics: baked clay products: ceramic production, neolithic, bronze age. Iron age: glass, ceramic shapes, vessels, other ceramic applications, a symposium. Clay: a finely ground plastic (mouldable) rock or soil material. Contains organic material, water, minerals, and some metal oxides (particularly iron oxide: dug out of the ground or sometimes mined (having to dig down to get the clay, then processed. Levigation: take your clay and you suspend it in water (in a tank or pit). Clay suspension in water (clay mixed with water) Impurities float to the top (organic material) and heavy sediments sink to the bottom (gravel and stones). And in the middle you get various layers of usable clay: heavier clays will sink to the bottom and lighter clays will rise to the top of the clay layer, layers of clay will have different properties.
