The tetraargon cation is also linear . icosahedral clusters have an core, whereas is dioctahedral with an core.
2.
These two groups of minerals are subgrouped by octahedral occupation; specifically, kaolinite and pyrophyllite are dioctahedral whereas serpentine and talc trioctahedral.
3.
The [ Zn ( OH ) 6 ] octahedra form an edge-sharing dioctahedral sheet similar to that observed in dioctahedral micas.
4.
The [ Zn ( OH ) 6 ] octahedra form an edge-sharing dioctahedral sheet similar to that observed in dioctahedral micas.
5.
It is a soft, earthy, usually white, mineral ( dioctahedral phyllosilicate clay ), produced by the chemical weathering of aluminium silicate minerals like feldspar.
6.
The dioctahedral sheet of nontronite is composed mainly of trivalent iron ( Fe 3 + ) cations, although some substitution by trivalent aluminium ( Al 3 + ) and divalent magnesium ( Mg 2 + ) does occur.
7.
"' Phengite "'is a series name for dioctahedral micas of composition K ( AlMg ) 2 ( OH ) 2 ( SiAl ) 4 O 10, similar to muscovite but with addition of magnesium.
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