Table of Contents
What is it called when two single chains of tetrahedra bond to each other the result?
When two single chains of tetrahedra bond to each other, the result is called a. double-chain silicate.
What do the tetrahedra bond to each other?
The structure of the isolated silicates subclass is that each tetrahedra is surrounded by metals and so is “isolated” from other tetrahedra. The chemical bonds that connect the metals to the tetrahedra are very strong covalent bonds. Oxygen sharing is a very strong covalent bond, so the chains are hard to break.
What is it called when silica tetrahedra bond together?
Chain Silicates. Pyroxene (Figure 5.25 bottom left) is an example of a single-chain silicate. The structure of chain silicates is shown in Figure 5.25 (top). In pyroxene, silica tetrahedra form a chain because one oxygen from each tetrahedron is shared with the adjacent tetrahedron.
What is silica tetrahedron?
The silicate tetrahedron consists of four oxygen atoms arranged as close as they can get around a central silicon atom. The result is a pyramidal shape known as a tetrahedron, with an oxygen atom at each of its four apices. The silicon atom by itself has four electrons in its outer shell.
What is a double chain silicate?
a group of silicate structures, in which the SiO4 tetrahedral may link into linear single or double chains (Si4O11)−6 of indefinite lengths by the sharing of oxygen of indefinite length, the ends, of which are at the surface of the crystal. Double chain or band such as amphiboles.
How are the silicates categorized?
Silicate minerals are classified as being either ferromagnesian or non-ferromagnesian depending on whether or not they have iron (Fe) and/or magnesium (Mg) in their formula. A number of minerals and their formulas are listed below. For each one, indicate whether or not it is a ferromagnesian silicate.
Which of the following silicate minerals form from single tetrahedra?
2.4 Silicate Minerals
| Tetrahedron Configuration | Example Minerals |
|---|---|
| Isolated (nesosilicates) | Olivine, garnet, zircon, kyanite |
| Pairs (sorosilicates) | Epidote, zoisite |
| Rings (cyclosilicates) | Tourmaline |
| Single chains (inosilicates) | Pyroxenes, wollastonite |
Which of the following minerals is a Ferromagnesian silicate?
Biotite mica can have iron and/or magnesium in it and that makes it a ferromagnesian silicate mineral (like olivine, pyroxene, and amphibole). Chlorite is another similar mineral that commonly includes magnesium….3.1 Silicate Mineral Groups.
| Mineral | Formula | Ferromagnesian silicate? |
|---|---|---|
| quartz | SiO2 | . |
What’s the relationship between silicate and tetrahedron?
When silicate anions polymerize, they share an oxygen atom with a neighboring tetrahedron. Commonly, each tetrahedron will share two of its oxygen atoms, forming long chain structures.
What is the relationship between silicate and tetrahedron?
Which of the following is a single chain silicate?
Asbestos, augite (minerals in the pyroxene family) are examples of single chain silicates. Amphibole and Hornblende are examples of double chain silicates.
What are single chain silicates called?
Silicate minerals containing chains are termed inosilicates. They consist of single chains (SiO32−)n, in which the silicon to oxygen atom ratio is 1:3, and double chains (Si4O116−)n, in which the silicon to oxygen atom ratio is 4:11.