Commodity Code

mica

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

definition The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having close to perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. more like this
notation
01.02.27 more like this
Mica more like this
source http://en.wikipedia.org/wiki/Mica more like this
type
Resource
Concept
broader industrial mineral
narrower mica
in scheme commodity code
is primary topic of mica