The cleavage of a silicate mineral is largely determined by internal structure
A silicate is any member of the family of silicon and oxygen containing anions, typically represented by the generic formula [SiO(42x)4x]n, where 0 x 2. Orthosilicate SiO4 4 (x = 0), metasilicate SiO2 3 (x = 1), and pyrosilicate Si 2O6 7 (x = 0.5, n = 2) are members of the family. Any salt of these anions, such as sodium metasilicate, or any ester having the appropriate chemical group, such as tetramethyl orthosilicate, are likewise given this designation.
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