Commodity Code

staurolite

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

definition Staurolite is a red brown to black, mostly opaque, nesosilicate mineral with a white streak. It crystallizes in the monoclinic crystal system, has a Mohs hardness of 7 to 7.5 and the chemical formula: Fe2+2Al9O6(SiO4)4(O,OH)2. more like this
notation
01.02.39 more like this
Stau more like this
source http://en.wikipedia.org/wiki/Staurolite more like this
type
Resource
Concept
broader industrial mineral
narrower staurolite
in scheme commodity code
is primary topic of staurolite