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When each tetrahedron is bonded to four other tetrahedra silicates form?
Wiki User
∙ 11y ago
I was confused by this question- if each [SiO4] tetrahedron is bonded to four other tetrahedra then each silicon has half a share of 4 oxygens- so the formula is SiO2- but that is not a silicate, that is silica, but thenIremembered mineralogists classify silica as a silicate!.
If the odd silicon atom is replaced with say aluminium then you could form a network (3D) anion where there are both [SiO4] and [AlO4]- tetrahedra linked at the corners. The complexity of these structures is difficut to describe in words but there are voids in n the structure where the balancing cations sit. These minerals are called tectosilicates and include feldspars which are quite prettily colored. Tectosilicates are common in nature. Feldspars have formulae that have 2:1 ratio of O to the total of Si and Al atoms, for example KAlSi3O8,where 1 Si in four has been substituted for Al.
Wiki User
∙ 11y ago
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Describe the six main crystalline structures of silicate minerals?
Isolated tetrahedra silicates do not link with other silicon or oxygen atoms Ring Silicates form by sharing oxygen atoms Single Chain Silicates form a chain when sharing oxygen atoms Double Chain Silicates form when two or more single chains of tetrahedra bond to each other Sheet Silicates form when each tetrahedron shares three of its oxygen atoms with other tetrahedra Framework Silicates form when each tetrahedron is bonded to four other tetrahedras :)
What are silicates made of?
Silica tetrahedra, made up of silicon and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.
What is bridging and non bridging oxygen?
A bridging oxygen is the oxygen that two SiO4 tetrahedra share in a crystal structure. A non bridging oxygen is any other oxygen that is not shared by two tetrahedra.
What are minerals that contain oxygen and silicon?
They are classified as silicates, one of the more common being the mineral quartz which is composed only of the elements silicon and oxygen (SiO2). Other silicate minerals may include one or more other elements as well in their chemical formula.
An example of a mineral with a basic structure consisting of a single tetrahedra linked by atoms of other elements is?
Olivine
Describe the six main crystalline structures of silicate minerals?
Isolated tetrahedra silicates do not link with other silicon or oxygen atoms Ring Silicates form by sharing oxygen atoms Single Chain Silicates form a chain when sharing oxygen atoms Double Chain Silicates form when two or more single chains of tetrahedra bond to each other Sheet Silicates form when each tetrahedron shares three of its oxygen atoms with other tetrahedra Framework Silicates form when each tetrahedron is bonded to four other tetrahedras :)
When each tetrahedron shares three of its oxygen atoms with other tetrahedra silicates form what?
This gives a sheet silicate. Examples of minerals with this structure include kaolinite and talc.
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 are silicates made of?
Silica tetrahedra, made up of silicon and oxygen, form chains, sheets, and frameworks, and bond with other cations to form silicate minerals.
Why is the air made up mostly of nitrogen gas?
Because nitrogen and nitrates are not easily permanently bonded with other elements. As are for example, the silicates or the phosphates. Or even the oxides.
What makes up diamond?
Diamond is made of carbon atoms bonded to each other where 1 carbon atom is boded to four other carbon atoms forming a tetrahedron which continues throughout the volume.
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 is the structure of dimond?
The structure of a diamond are held together by carbon atoms covalently bonded by other carbon atoms. What makes diamonds so strong is the carbon atoms forming four bonds, which are covalent, with each other making it very strong.
What is bridging and non bridging oxygen?
A bridging oxygen is the oxygen that two SiO4 tetrahedra share in a crystal structure. A non bridging oxygen is any other oxygen that is not shared by two tetrahedra.
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
What solid figures flat surfaces?
Cubes, cuboids, tetrahedra, prims, pyramids and other polyhedra.
