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corundum

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

definition Trigonal form of aluminium oxide Al2O3 with exceptional hardness used as an abrasive in sandpaper to machinery. more like this
notation
01.02.11 more like this
Cor more like this
source http://www.webmineral.com/data/Corundum.shtml http ; http//en.wikipedia.org/wiki/Corundum more like this
type
Resource original
Concept original
broader
http://resource.geosciml.org/classifier/cgi/commodity-code/industrial-mineral original
narrower corundum original
in scheme commodity-code original
is primary topic of corundum