Describe about halide minerals, Chemistry

Assignment Help:

Q. Describe about Halide Minerals?

Highly electropositive alkali and alkaline earth metals tend to form halide salts, which being soluble in water are washed away into the oceans due to leaching of the top soil. However, many deposits of halide minerals are also found under the soil. Some important halide minerals are rock salt (NaCl), sylvine (KCI), horn silver (AgCI), carnallite (KCl.MgC12.6H20), fluorspar (CaF2) and cryolite (AlF3.3NaF).

Ores as mined, generally contain variable amounts of unwanted minerals such as silica. clay, granite, etc. These unwanted materials are called gangue. The proportion of the desired metal in the ore must be sufficiently high so that the extraction of metal is chemically feasible and economically competitive. Ores of very low concentration are used only if they can be processed easily and inexpensively or if the metal produced is scarce. The lower limit of the percentage of the metal in mineral below which extraction becomes unprofitable depends on the value of the metal. Thus, ores containing 1 % tin are frequently worked upon to obtain tin and ores containing 5% tin are considered rich deposits of tin. If gold is present to the extent of even 0.0015%, it is considered worth extraction: On the other hand, iron and aluminium will not be worth extracting unless they contain 30% or more of the metal.


Related Discussions:- Describe about halide minerals

How to solve, The total number of valence electrons in 4.2 gm N-3 of ion i...

The total number of valence electrons in 4.2 gm N-3 of ion is ( NA is the Avogadro''s number): (1) 1.6NA

Draw a typical triglyceride, Draw a  typical triglyceride and name its bui...

Draw a  typical triglyceride and name its building blocks. Mark centres of chirality.   The reaction cascade exact to fatty acid degradation is called "β-oxidation". It take

Volatile liquid, volatile liquid is placed in a open container for 15 minut...

volatile liquid is placed in a open container for 15 minutes should you expect its mas to

What is activation energy, Q. What is Activation Energy? Ans. Coll...

Q. What is Activation Energy? Ans. Colliding molecules which overcome the activation energy form an activated complex. In the activated complex, original bonds are partial

What is percent error, Q. What is Percent error? Quantities measured th...

Q. What is Percent error? Quantities measured throughout an experiment are called experimental values. The dissimilarity between an accepted value and an experimental value is

Observe the reaction carefully., Determine five chemical reactions you obse...

Determine five chemical reactions you observe  in your daily life. Observe the reaction carefully. Present the change in the condition of the reactants and products wit

The positive charge of an atom, The positive charge of an atom is: (1) ...

The positive charge of an atom is: (1) Spread all over the atom    (2) Distributed around the nucleus  (3)Concentrated at the nucleus (4) All of these Ans: Concentr

Spin-only magnetic moment, The tris(monothiocarbamato)iron(III)complex show...

The tris(monothiocarbamato)iron(III)complex shown to the right undergoes conversion from low to high spin state  with an increase in temperature.  This can be monitored by measurin

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd