BGS Earth Material Classes (RCSv3)
rock type

http://data.bgs.ac.uk/ref/EarthMaterialClass/componentRock
Comment"This property is a link to the single lithology that defines this rock component" language=en 
Label"rock type" language=en 
Rangehttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockName
Typehttp://www.w3.org/1999/02/22-rdf-syntax-ns#Property

namespaces used
bgsrBGS Schemas
bgsreBGS RCS Earth Material Classes
bgsrgBGS Geochronology
bgsrlBGS Lexicon of Named Rock Units
bgsrmBGS 1:625 000 Digital Geological Map
dctDublin Core terms
rdfResource Description Framework
rdfsResource Description Framework - Schema
skosSimple Knowledge Organization System
xsdXML Schema Data Type