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Earth lab datasite

Beryl
Silicate in granite
beryllium aluminosilicate
Be3 Al2 [Si6 O18]
Scale bar = 1 centimetre
cleavage: Indistinct
crystal system: Hexagonal
hardness 7.0 - 8.0
relative density 2.6 - 2.9
Mourne Mountains, Co. down, Ireland
24 L 9