Earth material that is composed of one or more single rock types
Basaltic lava and mugearite

http://data.bgs.ac.uk/id/EarthMaterialClass/RockComposite/BLMU
Statushttp://data.bgs.ac.uk/ref/CurrentStatus/CURRENT
Has parthttp://data.bgs.ac.uk/id/EarthMaterialClass/RockName/BCLAVA
http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/MUG
Schemahttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockComposite
Label"Basaltic lava and mugearite" language=en 
See alsohttp://dbpedia.org/resource/Basalt
http://dbpedia.org/resource/Lava
http://dbpedia.org/resource/Mugearite
Typehttp://www.w3.org/2004/02/skos/core#Concept
Definition"BASALTIC LAVA AND MUGEARITE" language=en 
Is in schemehttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockComposite
Preferred label"Basaltic lava and mugearite" language=en 

namespaces used
bgsienBGS RCS Named Rock
bgsiepBGS RCS Rock Component
bgsrBGS Schemas
bgsrcBGS Current Status Codes
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