SecretCup

Wednesday, March 09, 2005

Sorosilicate

Formerly  called Pyrosilicate,   any member of a group of compounds with structures that have two silicate tetrahedrons (a central silicon atom surrounded by four oxygen atoms at the corners of a tetrahedron) linked together. Because one oxygen atom is shared by two tetrahedrons, the chemical formula contains Si2O7, as in melilite or hemimorphite.

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