tectosilicate

tectosilicate

[¦tek·tō′sil·ə‚kāt]
(mineralogy)
A structural type of silicate in which all four oxygen atoms of the silicate tetrahedra are shared with neighboring tetrahedra; tectosilicates include quartz, the feldspars, the feldspathoids, and zeolites. Also known as framework silicate.
References in periodicals archive ?
In the tectosilicate structure of quartz, in which there is no center of symmetry, enantiomorphism results from how the tetrahedral Si[O.
In the past, zeolites were limited to tectosilicates and tetrahedrons containing aluminum and silicon.
In one way the organization here is conventional, the chapters moving in Dana order from native elements through tectosilicates, to end at last with opal, a non-crystalline "mineraloid.
Nitric acid-extractable K represents exchangeable K plus some K extracted from within phyllosilicate and tectosilicates mineral structures.
These data are consistent with a dissolution-precipitation process in tectosilicates, but it is very similar to that of the montmorillonite transformation.
Structure of tectosilicates is formed from tetrahedrons mutually linked by all their oxygen atoms.
The zeolite minerals belong also to tectosilicates but in contrast with Cs-AS, ANALC and ORT they form complicated structure with relative big cavities among their tetrahedrons.