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a soft hydrated aluminium silicate crystallizing in the monoclinic system. It occurs in metamorphic rocks; often resembles talc., valge või rohekas tule- ja happekindel silikaat
pürofülliit . EKI terminibaas Esterm. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//esterm/p%C3%BCrof%C3%BClliit/1/est (23.07.2026)
