Commodity Code

quartz

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

unstar this property definition Quartz is the second most abundant mineral in the Earth's continental crust, after feldspar. It is made up of a continuous framework of SiO4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall formula SiO2. There are many different varieties of quartz, several of which are semi-precious gemstones. more like this
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01.02.32 more like this
Qtz more like this
star this property source http://en.wikipedia.org/wiki/Quartz more like this
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Resource
Concept
star this property broader industrial mineral
star this property narrower quartz
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star this property is primary topic of quartz& properties=definition,prefLabel