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

Polymers, merits& demerits of free radical mechanism

merits& demerits of free radical mechanism

Illustrate diffrent types of graphs, Q. Illustrate diffrent types of graphs...

Q. Illustrate diffrent types of graphs? Circle graphs a circle graph is utilized to show the parts of a fixed whole. This kind of graph is occasionally called a pie chart bec

Organic, formula of acetic acid

formula of acetic acid

Help, how much atp energy (kcal) is produced in our bodies from the convers...

how much atp energy (kcal) is produced in our bodies from the conversion of 100.0 moles of sucrose?

Extraction of copper , how many process there are to extracte copper from c...

how many process there are to extracte copper from copperpyrites/

The maximum number of electrons, The maximum number of electrons that can b...

The maximum number of electrons that can be accommodated in a 3d  subshell is: (1) 2        (2) 10       (3) 6       (4) 14 Ans: 10

How many unpaired electron are present, How many unpaired electrons are pre...

How many unpaired electrons are present in Ni 2+   cation  (atomic number = 28): (1) 0        (2) 2        (3) 4        (4) 6 Ans:  2

Sulpha drugs - drugs and medicines, Sulpha drugs: These are synthetic c...

Sulpha drugs: These are synthetic chemotherapeutic agents who consist of sulphonamide, -SO 2 NH 2 set in their organization. These were the firstly effective chemotherapeutic

Electrically conducting polymers, Q. Write short note on "Electrically cond...

Q. Write short note on "Electrically conducting polymers". Ans. electrically conducting polymers: Many synthetic organic polymers have been found to possess high electrical c

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