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257-Kaolin, Molecular change to porcelain and x-ray diffraction Gr 9-12 $6.00

Mystery includes rock, fossil, or mineral sample and Mystery questions with teaching instructions.

– Powdered Kaolin Clay
Note: Kaolinite is the name associated with the pure crystalline form of the mineral. Kaolin is the name for the industrial clay, which is mostly composed of Kaolinite but also has other minerals in it.

– To introduce the origin of the mineral kaolinite by the chemical alteration of feldspar
– To explore the relationship between the arrangement of atoms (molecular structure) within kaolinite and the physical characteristics that make it so well suited for ceramics, particularly for porcelain
– To explore the concept of thermal metamorphism -- within minerals the arrangement of atoms changes to maintain equilibrium (stay in balance) with the changing temperature of their environment
– To introduce x-ray diffraction as a method of identifying the atomic structure of minerals
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Ruth Deike
Rock Detective Geoscience Education
395 Deer Run Drive
Nellysford , VA 96080

Phone: 434-263-3737



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