1 "Ficheiro:EB1911_Crystallography_-_Fig_94_Beryl.svg".

Ficheiro:EB1911 Crystallography - Fig 94 Beryl.svg

DescriptionEB1911 Crystallography - Fig 94 Beryl.svg English: Etched figures on a hexagonal prism of beryl. Date 12 January 2019 Source Own work based...

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