cyclosilicate

compound with a structure in which silicate tetrahedrons (a central silicon atom surrounded by four oxygen atoms at the corners of a tetrahedron) ... [2 related articles]
Found on http://www.britannica.com/eb/a-z/c/174

cyclosilicate

Mineral with silicate tetrahedra groups linked in 3- or 6-member rings.
Found on http://www.scientificpsychic.com/etc/geology-glossary.html
No exact match found