phyllosilicate


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Related to phyllosilicate: Tectosilicate, nesosilicate

phyllosilicate

[¦fil·ō′sil·ə·kət]
(mineralogy)
A structural type of silicate mineral in which flat sheets are formed by the sharing of three of the four oxygen atoms in each tetrahedron with neighboring tetrahedrons. Also known as layer silicate; sheet mineral; sheet silicate.
References in periodicals archive ?
Montmorillonite is a 2:1 phyllosilicate that belongs to the group of smectites and it is the main component of bentonite clay.
Continuum removal analysis is a particularly robust tool for detecting and predicting iron oxides and phyllosilicate minerals.
This research describes new insight as to how this stone can be identified in hand sample in the field, such as detrital phyllosilicate grains aligned parallel to bedding that are easily distinguished as silver flecks with a hand lens.
In the analysis of biotite, for the extractants N[H.sub.4]([H.sub.2]P[O.sub.4]) and Ca[([H.sub.2]P[O.sub.4]).sub.2], considerable amounts of Fe and Mg were present in solution, indicating the weathering of this iron-magnesium phyllosilicate. For the N[H.sub.4]([H.sub.2]P[O.sub.4]) extractant, the high amounts of Ca might be related to alteration of the mineral albite, which, compared to other minerals present in the modified biotite rock, such as quartz and microcline, presents lower resistance to weathering according to the Goldich dissolution series.
For the textural and chemical characterization of phyllosilicates, sediments were prepared for transmission electron microscopy (TEM) study by two different methods.
"The locations of red zones in Marathon Valley correlate closely with the phyllosilicate signature we see from orbit," Squyres said.
In systematic mineralogy, kaolin, which is a thin clay, usually white in color, formed by the weathering of aluminous minerals, is classified as a phyllosilicate, due to its absorption capacity and absence of primary toxicity (OWEN et al., 2012).
This composition is consistent with a silica-rich volcanic glass containing plagioclase and phyllosilicate inclusions, together with secondary calcite veins.
Initially dispersed constituents of the granite are segregated into phyllosilicate rich (P- rich) and quartz-rich (Q-rich) domains.
Geologic clay deposits are mostly composed of phyllosilicate minerals containing variable amounts of water trapped in the mineral structure [1].
Clay is a natural mineral of the smectite family of phyllosilicate group shaped crystals with a layered structure.