Table of Contents
- 1 What minerals demonstrate a sheet silicate structure?
- 2 What are the silicate group of minerals?
- 3 What is a sheet silicate structure?
- 4 How do you identify a silicate mineral?
- 5 What are silicates draw the structure of different silicates?
- 6 What are silicates classify them explaining the structure of silicate ion and state its uses?
What minerals demonstrate a sheet silicate structure?
Phyllosilicates (Sheet Silicates) The micas, clay minerals, chlorite, talc, and serpentine minerals are all based on this structure.
What are the silicate group of minerals?
Silicate minerals are the most common of Earth’s minerals and include quartz, feldspar, mica, amphibole, pyroxene, and olivine.
What is a sheet silicate structure?
The phyllosilicates, or sheet silicates, are an important group of minerals that includes the micas, chlorite, serpentine, talc, and the clay minerals. The basic structure of the phyllosilicates is based on interconnected six member rings of SiO4-4 tetrahedra that extend outward in infinite sheets.
What is the structure of silicate mineral?
Structure. The basic structural unit of all silicate minerals is the silicon tetrahedron in which one silicon atom is surrounded by and bonded to (i.e., coordinated with) four oxygen atoms, each at the corner of a regular tetrahedron.
What are silicates classify them give their structure and suitable examples?
In the structure of sheet silicates, three oxygen of tetrahedra is being shared. So there is one unit negative charge per tetrahedral. This negative charge is neutralised by cations between the sheets. Examples of sheet silicates are mica, clay, talc, and muscovite.
How do you identify a silicate mineral?
You can understand the properties of a silicate mineral such as crystal shape and cleavage by knowing which type of crystal lattice it has. In nesosilicates, also called island silicates, the silicate tetrahedra are separate from each other and bonded completely to non silicate atoms. Olivine is an island silicate.
What are silicates draw the structure of different silicates?
(A) The basic structural unit in silicates is tetrahedral (SiO4)4−. (B) Replacement of a Si atom in silica by an Al atom results in negative charge on the Al atom. (C) Silica dissolves in aqueous NaOH to form sodium silicate in which Na+ is bonded to oxyanions. (D) Silicones are examples of silicates.
What are silicates classify them explaining the structure of silicate ion and state its uses?
2) PYRO SILICATES Pyro silicate (or Soro silicate or disilicate) contain Si2O76- ions which are formed by joining two tetrahedral SiO44- which share one oxygen atom at one corner (one oxygen is removed while joining). Structure of pyrosilicate is shown below. The pyrosilicate ion is less basic than orthosilicate ion.
What groups are in the group labeled non silicates?
III. NON-SILICATE MINERALS (6 classes)
- A. Oxides.
- B. Sulfides.
- C. Carbonates.
- D. Sulfates.
- E. Halides.
- F. Phosphates.
What are the different types of silicate groups?
Main groups
| Major group | Structure | Example |
|---|---|---|
| Inosilicates | single chain | pyroxene group |
| Inosilicates | double chain | amphibole group |
| Phyllosilicates | sheets | micas and clays |
| Tectosilicates | 3D framework | quartz, feldspars, zeolites |