Commodity Code

sillimanite

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

definition Orthorhombic Al2SiO5 aluminium neosilicate mineral occurring in aluminous metamorphic rocks used in the manufacture of high alumina refractories or alumina bricks. more like this
notation
01.02.01.04 more like this
Sill more like this
source http://www.webmineral.com/data/Sillimanite.shtml http://en.wikipedia.org/wiki/Sillimanite more like this
type
Resource
Concept
broader aluminosilicate
narrower sillimanite
in scheme commodity code
is primary topic of sillimanite