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PREFERRED TERM
quartz  
TYPE
  • http://purl.org/net/provenance/ns#DataItem

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. - http://en.wikipedia.org/wiki/Quartz
DESCRIPTION
  • 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. - http://en.wikipedia.org/wiki/Quartz
IDENTIFIER
  • quartz
TITLE
  • quartz
URI
http://inspire.ec.europa.eu/codelist/CommodityCodeValue/quartz
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