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Earth lab datasite

Apophyllite
Silicate in breccia
hydrous potassium calcium silicate
(K, Ca) Ca4 [Si8 O20] (F OH) (H2O)8
Scale bar = 1 centimetre
cleavage: Perfect
crystal system: Tetragonal
hardness 4.5 - 5.0
relative density 2.3 - 2.5
Co. Antrim, Ireland
24 M 2