Commodity Code

pyrophyllite

http://resource.geosciml.org/classifier/cgi/commodity-code/pyrophyllite

unstar this property definition A phyllosilicate mineral composed of aluminium silicate hydroxide: Al2Si4O10(OH)2. Pyrophyllite is easily machineable and has excellent thermal stability and is added to clay to reduce thermal expansion when firing and is combined with other compounds, such as in insecticide and for making bricks. It is also used for slate pencils, chalk (French chalk) and small carving. more like this
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01.02.01.03 more like this
Pphy more like this
star this property source http://www.webmineral.com/data/Pyrophyllite.s html http://en.wikipedia.org/wiki/Pyrophyllite more like this
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Resource
Concept
star this property broader aluminosilicate
star this property narrower pyrophyllite
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star this property is primary topic of pyrophyllite& properties=definition,prefLabel