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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.
What else can I help you with?
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 sheet silicates?
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.
An example of a mineral that has a basic structure consisting of isolated tetrahedra linked by atoms of other elements is?
Garnet is an example of a mineral that has a basic structure consisting of isolated tetrahedra linked by atoms of other elements. In garnet, each tetrahedron shares oxygen atoms with neighboring tetrahedra, creating a three-dimensional framework. The cations occupying the spaces in between the tetrahedra give garnet its characteristic structure and properties.
Which is not true of a single silicon-oxygen tetrahedron?
A single silicon-oxygen tetrahedron is typically not stable on its own and tends to polymerize or form interconnected structures with other tetrahedra. They are the building blocks of various silicate minerals and have a net charge of -4. Silicon-oxygen tetrahedra are not found in isolation but are connected to form complex networks in minerals.
The silica tetrahedron that forms the backbone of all the silicate minerals is composed of silicon and what other element?
Oxygen. The silica tetrahedron consists of one silicon atom bonded to four oxygen atoms in a tetrahedral arrangement.
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 :)
In framework silicates each tetrahedron is bonded to many other tetrahedron?
In framework silicates, each silicon-oxygen tetrahedron is interconnected with multiple other tetrahedra through shared oxygen atoms, creating a three-dimensional network. This extensive bonding gives rise to a variety of structures, such as quartz and feldspar, which are characterized by their strength and stability. The connectivity allows for a wide range of physical properties and chemical compositions, making framework silicates significant in both geological processes and industrial applications.
When each tetrahedron shares three of its oxygen atoms with other tetrahedra silicates form what?
When each tetrahedron shares three of its oxygen atoms with other tetrahedra, a framework silicate structure is formed. This structure results in a three-dimensional network of interconnected tetrahedra, giving rise to minerals such as quartz and feldspar.
Where do the tetrahedra bond to each other?
In a tetrahedral molecular structure, the atoms bond to each other at the vertices of the tetrahedron. Each atom forms covalent bonds with the other atoms at the corners of the tetrahedron, resulting in a stable and symmetrical arrangement.
What are sheet silicates?
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.
An example of a mineral that has a basic structure consisting of isolated tetrahedra linked by atoms of other elements is?
Garnet is an example of a mineral that has a basic structure consisting of isolated tetrahedra linked by atoms of other elements. In garnet, each tetrahedron shares oxygen atoms with neighboring tetrahedra, creating a three-dimensional framework. The cations occupying the spaces in between the tetrahedra give garnet its characteristic structure and properties.
What do isolated tetrahedra link with?
Isolated tetrahedra are linked with silicate minerals such as olivine and garnet, where each tetrahedron shares no oxygen atoms with neighboring tetrahedra. This results in these minerals having higher densities and more complex crystal structures compared to other silicate minerals.
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.
When two single chains of tetrahedra bond to each other the result is called a what?
When two single chains of tetrahedra bond to each other, the resulting structure is called a double chain silicate. These structures typically involve each tetrahedron sharing three oxygen atoms with adjacent tetrahedra, forming a linked double chain. Examples include amphiboles and pyroxenes.
Which is not true of a single silicon-oxygen tetrahedron?
A single silicon-oxygen tetrahedron is typically not stable on its own and tends to polymerize or form interconnected structures with other tetrahedra. They are the building blocks of various silicate minerals and have a net charge of -4. Silicon-oxygen tetrahedra are not found in isolation but are connected to form complex networks in minerals.
The silica tetrahedron that forms the backbone of all the silicate minerals is composed of silicon and what other element?
Oxygen. The silica tetrahedron consists of one silicon atom bonded to four oxygen atoms in a tetrahedral arrangement.
Contrast the composition of minerals in each of the mineral groups?
silicates- silicon and oxygen carbonates- carbon, oxygen, and 1 or more other elements oxides- oxygen and 1 or more other elements( usually metal) sufates/sulfides- contain sulfur halides- halogen ion and 1 or more other elements native elements- group of minerals that exists in relatively pure form( ex: gold, silver, copper, sulfer, carbon...)
