/ RDLs / ISO 15926 Part 4: Core reference data - Edition 4 / PERLITE

PERLITE

Class
Identifier
https://posccaesar.org/ontology/15926-4/4.0/PERLITE
Definition <PERLITE> is a <VOLCANIC ROCK> compound containing from 2 to 5 percent bonded water. It is a chemically inert substance composed basically of silica and aluminium, but some impurities which are hygroscopic