Fundamental Pottery Technology

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Published on 10 Oct 2011
School
UTSG
Department
Near & Middle Eastern Civilizations
Course
NMC469Y1
Professor
Wednesday, September 21/11
Mediaeval Middle Eastern Ceramics
R. Mason
Fundamental Pottery Technology
The Earth
Animal
Vegetable
Mineral
All of these can find their way into pottery
Primarily mineral
**What is a Mineral?
A single crystalline phase in inorganic nature
Single phase: may not be broken down mechanically into its components
Crystalline phase
Atomic structure
Not a gas, solid or liquid state
Crystalline state in which all atoms are bound into a rigid network extending in 3
dimensions
Inorganic - in environment and usually but not always origins
Nature - it is not like some synthetic materials that behave differently in nature
On Bonding
Various forms of attraction exist between the atoms to form the crystalline structure
Most important in mineralogy is ionic
Contain alternating cations and anions
Cations have lost elections so are positively charged
Anions have gained elections so are negatively charged
Electrostatic elections keep it together
Ionic bonding
NaCl
Cation - Na
Anion - Cl
Sometimes the anion may be an anionic group kept together by covalent bonds (carbonates and
sulphates)
Calcite: CaCO3
Gypsum: CaSO4 2H2O
Sometimes the cation may form a solid-solution series like pyroxene group
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Document Summary

The earth: animal, vegetable, mineral, all of these can find their way into pottery, primarily mineral. **what is a mineral: a single crystalline phase in inorganic nature, crystalline phase. Single phase: may not be broken down mechanically into its components: atomic structure, not a gas, solid or liquid state, crystalline state in which all atoms are bound into a rigid network extending in 3 dimensions. Inorganic - in environment and usually but not always origins: nature - it is not like some synthetic materials that behave differently in nature. Ionic bonding: nacl, cation - na, anion - cl sulphates, calcite: caco3, gypsum: caso4 2h2o. Sometimes the anion may be an anionic group kept together by covalent bonds (carbonates and.