feldspar
Instance URI: http://resource.geosciml.org/classifier/cgi/commodity-code/feldspar
Within scheme: South Australian Commodity Codes
Feldspars (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8) are a group of rock-forming tectosilicate minerals that make up as much as 60% of the Earth's crust.