A type of earth material that is a single rock type only
Igneous rock and igneous sediment

http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/PT_IR
Child in main BGS rock hierarchyhttp://data.bgs.ac.uk/id/EarthMaterialClass/RockName/+~FIS
http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/IGRU
http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/CIR
http://data.bgs.ac.uk/id/EarthMaterialClass/RockName/IGSDU
Child in Total Alkalis Versus Silica hierarchyhttp://www.w3.org/1999/02/22-rdf-syntax-ns#nil
Child in Unconsolidated Deposits hierarchyhttp://www.w3.org/1999/02/22-rdf-syntax-ns#nil
Parent in main BGS rock hierarchyhttp://data.bgs.ac.uk/id/EarthMaterialClass/RockName/+@RSD
Parent in Total Alkalis Versus Silica hierarchyhttp://www.w3.org/1999/02/22-rdf-syntax-ns#nil
Parent in Unconsolidated Deposits hierarchyhttp://www.w3.org/1999/02/22-rdf-syntax-ns#nil
Schemahttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockName
Label"Igneous rock and igneous sediment" language=en 
See alsohttp://dbpedia.org/resource/Igneous_rock
Typehttp://www.w3.org/2004/02/skos/core#Concept
Definition"IGNEOUS ROCK AND IGNEOUS SEDIMENT" language=en 
Is in schemehttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockName
Preferred label"Igneous rock and igneous sediment" language=en 

namespaces used
bgsienBGS RCS Named Rock
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