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Earth lab datasite

Gyrolite
Silicate in basalt
hydrous calcium silicate
Ca2 Si3 O7 (OH)2 (H2O)
Scale bar = 1 centimetre
cleavage: Perfect
crystal system: Hexagonal
hardness 3.0 - 4.0
relative density 2.4 - 2.5
Isle of Skye
24 D 9