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Clay creatures: Simple Clay Animals for Novices: Simple Clay Animals for Novices (Paperback)
售價:
$70.00
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商品簡介 |
| A material known as clay is soft, loose, and earthy and contains particles with a grain size of under 4 micrometers (m). It develops as a result of the extensive weathering and erosion of feldspar-containing rocks over a very long period of time. The hydrolysis (reaction with water) of the feldspar component during weathering changes it into clay minerals like kaolinites and smectites, which are the main minerals in kaolin clays (the principal minerals in bentonite clays). |
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