A type of non earth material matter, or absense of matter
Void

http://data.bgs.ac.uk/id/EarthMaterialClass/RockDummy/VOID
Statushttp://data.bgs.ac.uk/ref/CurrentStatus/CURRENT
Is part ofhttp://data.bgs.ac.uk/ref/EarthMaterialClass
Schemahttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockDummy
Label"Void" language=en 
Typehttp://www.w3.org/2004/02/skos/core#Concept
Definition"VOID" language=en 
Is in schemehttp://data.bgs.ac.uk/ref/EarthMaterialClass/RockDummy
Preferred label"Void" language=en 

namespaces used
bgsrBGS Schemas
bgsrcBGS Current Status Codes
bgsreBGS RCS Earth Material Classes
bgsrgBGS Geochronology
bgsrlBGS Lexicon of Named Rock Units
dctDublin Core terms
rdfResource Description Framework
rdfsResource Description Framework - Schema
skosSimple Knowledge Organization System
xsdXML Schema Data Type