@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix mi: <https://taxonomy.materialinstruments.com/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://taxonomy.materialinstruments.com/id/material/sand>
  a skos:Concept ;
  skos:inScheme <https://taxonomy.materialinstruments.com/id/axis/material> ;
  skos:prefLabel "Sand"@en ;
  skos:definition "Loose mineral grains between 0.063 and 2 millimetres across, as ISO 14688-1 bounds the sand fraction."@en ;
  skos:altLabel "silica sand"@en ;
  skos:altLabel "quartz sand"@en ;
  skos:hiddenLabel "silica sand"@en ;
  skos:hiddenLabel "quartz sand"@en ;
  skos:broader <https://taxonomy.materialinstruments.com/id/material/mineral> ;
  skos:closeMatch <http://www.wikidata.org/entity/Q34679> ;
  skos:notation "Pr_15_31_26_75"^^<https://taxonomy.materialinstruments.com/ns/uniclass> ;
  mi:sourceBasis "referenced" ;
  dcterms:source "composition dictionary in a materials-retrieval system (src-05); ISO 14688-1:2017" ;
  dcterms:date "2026-09-22" ;
  mi:status "active" .