Commodity Code

wollastonite

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

definition Wollastonite is a calcium inosilicate mineral (CaSiO3) that may contain small amounts of iron, magnesium, and manganese substituting for calcium. It is usually white. It forms when impure limestone or dolostone is subjected to high temperature and pressure sometimes in the presence of silica-bearing fluids as in skarns or contact metamorphic rocks. Associated minerals include garnets, vesuvianite, diopside, tremolite, epidote, plagioclase feldspar, pyroxene and calcite. It is named after the English chemist and mineralogist William Hyde Wollaston (1766–1828). more like this
notation
01.02.45 more like this
Wol more like this
source http://en.wikipedia.org/wiki/Wollastonite more like this
type
Resource
Concept
broader industrial mineral
narrower wollastonite
in scheme commodity code
is primary topic of wollastonite