SJZ Chenghui chemical co ltd

Silicate

April 08, 2024

I. Overview

Silicate minerals include all minerals containing silicates. These minerals are widely distributed in nature. There are more than 800 minerals found, accounting for one-third of the known minerals and accounting for 80% of the total weight of the earth's crust. They not only are three main types of rocks (igneous, metamorphic, sedimentary section) of the main rock-forming minerals, but also on industry, national defense important non-metallic mineral resources. Such as mica , asbestos , kaolinite, feldspar , talc and so on. In addition, a range of useful elements such as Be, Li, B, Zn, Rb, Cs, etc. can also be extracted from the silicate.

Second, crystal chemistry characteristics

(1) Chemical composition

The main elements constituting the silicate mineral are: O, Si, Al, Fe, Ca, Mg, Na, K followed by Mn, Ti, B, Be, Zr, Rb, Cs, F and other elements. The elements constituting the silicate are mainly inert gas type ions, followed by transition ions, and the number of silicates composed of copper ions is small.

(2) Crystal structure

Although there are not many types of elements constituting silicate minerals, the number of minerals is very large, mainly due to the complicated internal structure and the existence of a wide range of similarities. In the silicate crystal structure, each silicon ion is surrounded by four oxygen ions, and four oxygen ions are distributed at the top of the four corners to form a silicon tetrahedron [SiO 4 ] 4 + , which is a silicate. The basic structural unit.

1. Island structure 2. Ring structure 3. Chain structure (including single chain and double chain) 4. Layered structure 5. Frame structure

(3) The same type of image

The substitution of isomorphisms in silicates is extremely common. Thereby the composition of the silicate is further complicated. The continuous isomorphic mineral series is common in silicates. As is well known, the plagioclase series is the same as the series; the olivine series. In addition to the existence of a wide range of equivalent and heterogeneous isomorphisms between cations, there is also a phenomenon of isomorphism between anions, such as [SiO 4 ] 4 - can be [PO 4 ] 3- or [SO 4 ] 2- instead; O, [OH] and F are replaced with each other.

(4) Chemical bonds

The chemical bonds of silicate minerals are mainly ionic bonds and covalent bonds. The interior of the complex anion formed by the silicon oxide is mainly a covalent bond, and the bond of the complex anion to the cation is an ionic bond. Layered silicate minerals still have molecular bonds.

Third, classification

The morphology and many physical properties of silicate minerals have obvious constraints on their internal structure. For example, the chain structure silicates are mostly columnar and needle-like; the layered silicate crystals are mostly plate-like and sheet-like. Shape, and a set of complete cleavage. It can be seen that the silicate structure can better reflect the essential characteristics of the silicate, so the silicate can be divided into the following five sub-categories according to the internal structure.

1. Island silicate subclass,

2. Cyclic silicate subclasses,

3. Chain silicate subclasses,

4. Layered silicate subclasses,

5. Frame silicate subclasses.

お問い合わせ

Author:

Ms. susan zhang

Phone/WhatsApp:

13932170695

人気商品
企業ニュース
You may also like
Related Categories

この仕入先にメール

タイトル:
イーメール:
メッセージ:

Your message must be betwwen 20-8000 characters

お問い合わせ

Author:

Ms. susan zhang

Phone/WhatsApp:

13932170695

人気商品
企業ニュース
Blog News

お問い合わせ

susan zhang

Ms. susan zhang

電話番号:86-311-87713916

Fax:86-311-87718185

携帯電話:13932170695Contact me with Whatsapp

イーメール:susanzhang@chenghuichem.com

住所:NO.368 Youyi North Avenue, Shijiazhuang, Hebei

モバイルサイト

ホーム

Product

Whatsapp

私たちに関しては

お問い合わせ

We will contact you immediately

Fill in more information so that we can get in touch with you faster

Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.

送信