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Which type of silicate are the greatest proportion of oxygen atoms shared by pairs of adjacent tetrahedra?
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What are three common non silicate crystalline structures?
Non-silicate crystalline structures are tetrahedra, isolated, and chains.
How many oxygen are shared between the tetrahedra of a sheet silicate mineral?
3
Which silicate mineral group has a double chain silicate?
A silicate mineral that shares it's oxygen atom with another silica tetrahedron, forming a chain of tetrahedra. Single chain silicates include a group called the pyroxenes.
What is the silicate mineral that is found in the greatest variety of igneous rocks?
Quartz is one of the most abundant silicate minerals found in igneous rock.
What mineral is most common in beach sand?
Olivine is one of the most common minerals on Earth. It's known as one of the silicate minerals and it has the chemical formula (MgFe)2SiO4. With Mg and Fe in state of solid solution bonding single tetrahedra of [SiO4] together. The chemical stability of silicates is due to the relative inertness of the [SiO4] tetrahedra. Generally, when silicates are attacked by acids, the larger cations (i.e. Mg and Fe) are quite soluble. The chemical resistance of the mineral structure depends on the extent to which the tetrahedra are linked to each other. The stability of common silicates towards chemical weathering in the sedimentary environments increase in sequence, with Olivine (Nesosilicate or single tetrahedra) being the weakest and Quartz (Tectosilicate or framework silicate) being the strongest. Olivine is easily one of the weakest silicates and, due to weathering, the cations (Mg and Fe) are removed easily from Olivine and it collapses because there is no linking between the [SiO4] tetrahedra. Only a small fraction of the Si goes into solution. The majority of the [SiO4] associates together to form colloidal SiO2, which are very small particles of precipitated Quartz. Making quartz the most common mineral in beach sands.
What does tectosilicate mean?
It is a type of silicates in which all four oxygen atoms of the silicate tetrahedra are shared with neighboring tetrahedra.
In bowens reaction series how do the tetrahedra in feldspar differ from those of silicates?
The simple answer is... Feldspar has a much higher complex and stable tetrahedral orientation in comparison to that of any other Silicate variation higher up on the reation series latter. Feldspar is one of the most stable variations in orientation of, what boils down to, silicate tetrahedra. Because Feldspar is technically a form of silicate tetrahedra orientation, I am assuming you are asking how the silicate tetrahedra orientations vary from its most simple (i.e. Olivine) to its mosts complex (i.e. quartz/FELDSPAR) forms. Esentially a Silicate Ion SiO4^-4 is the most basic building block of FELDSPAR. Knowing this, as you move from the top of Bowen's reaction series, we see a gradual stabilization of the various Silicate tetrahedral orientations. These orientations include (in order of stability/complexity): [TOP OF REACTION SERIES] Individual (Singular form) Silicate Tetrahedra (i.e. Olivine) Chain (Linear form) Silicate Tetrahedra (i.e. Pyroxine) Double Chain (Bilinear form) Silicate Tetrahedra (i.e. amphibole) Sheet Silicate Tetrahedra ('2-D' form) (i.e. Mica: Biotite or Muscovite) Framework Silicate Tetrahedra ('3-D' form) (i.e. FELDSPAR) [BOTTOM OF REACTION SERIES]
What are three common non silicate crystalline structures?
Non-silicate crystalline structures are tetrahedra, isolated, and chains.
What is the result when two single chains of tetrahedra bond to each other?
Double chain silicate
What common silicate mineral with the tetrahedra arranged in sheets is?
The mica group of minerals.
How many oxygen are shared between the tetrahedra of a sheet silicate mineral?
3
What are crystalline structures?
Non-silicate crystalline structures are tetrahedra, isolated, and chains.
The building blocks of the silicate minerals is called the what?
Silicate tetrahedra. The tetrahedra are spanned by oxigen atoms, and right in the middle, there is a silicon atom. The chemical formula for one silicate tetrahedron is SiO4 The actual rate between silicon and oxigen can change as the tetrahedra are linked together, as different tetrahedra can share an oxigen atom with eachother.
When two single chain of tetrahedra bond to each other the result is?
double chain silicate
What is the result of two single chains of tetrahedra bond to each other?
double chain silicate
Double-chain silicates are formed when?
Chain silicates have interlocking chains of silicate tetrahedra. When adjacent tetrahedrons share either two oxygen's to continue the chain, or three oxygen atoms to connect also to a second chain, double chains are formed.
Which silicate mineral group has a double chain silicate?
A silicate mineral that shares it's oxygen atom with another silica tetrahedron, forming a chain of tetrahedra. Single chain silicates include a group called the pyroxenes.
