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

MOHRS SALT, write the prepation of mohrs salt..

write the prepation of mohrs salt..

Agar agar, Why agar agar is called as an inert electrolyte?

Why agar agar is called as an inert electrolyte?

Carbon, CARBON, SILICON AND GERMANIUM With the valence electron configur...

CARBON, SILICON AND GERMANIUM With the valence electron configuration s 2 p 2 the nonmetallic group of elements 14 may form compounds with four tetrahedrally directed covalent

Phenol, what is the acidity of phenol?

what is the acidity of phenol?

Organic, Explain in words why hydroboration leads to anti-Markovnikov addit...

Explain in words why hydroboration leads to anti-Markovnikov addition of hydrogen whereas most electrophilic addtions to alkenes result in Markovnikov addition.

Optical glass, Optical glass: They contain phosphorous as replacement for ...

Optical glass: They contain phosphorous as replacement for most of all the silica and lead silicate, containing a little CaO 2 , the latter is capable of absorbing ultraviolet lig

What are different applications in which piezoelectricity, What are differe...

What are different applications in which piezoelectricity is used Applications- Piezoelectric materials serve as a source of ultrasonic waves. At sea, they may be used to mea

Mass spectrometry, Are there any disadvatages of mass spectrometry

Are there any disadvatages of mass spectrometry

Photochemistry, what are the practical applications of photochemistry

what are the practical applications of photochemistry

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