Minerals and Ores

All minerals doesn't have objectionable impurities. All minerals are not ores. All ores are minerals. All minerals are not used to extract metals. Only ores are used to extract metals.

$\displaystyle Calamine$ $\displaystyle ZnCO _3$ is the mineral of zinc.
Hence, option (D) is correct answer.
 
$\displaystyle Magnetite$ $\displaystyle Fe _3O _4$ is iron mineral.

$\displaystyle Malachite $ $\displaystyle Cu _2CO _3(OH) _2$ is mineral of copper.

$\displaystyle Bauxite$ $\displaystyle Al _2O _3 \cdot 2H _2O$ is ore of aluminum.

Deep Sea mining is relatively unconventional method of extracting Rare Earth Elements (REE). It is an effective way to obtain a large amounts of rare earth metals. Minerals mined are- $Ag,Au,Cu,Mn,Co$ and $Zn$, etc.

Solution:- (D) Bauxite

Cuprite is an oxide mineral composed of copper(II) oxide ($Cu _2O$), and is a minor ore of copper. It can yield small gemstones.

The Appalachian region is historically famous for its vast coal deposits. While other minerals exist in the region, coal is the most defining and significant resource associated with the area.

• Asbestos is a mineral that is found in natural settings such as caves and outdoor deposits.
  
• Asbestos is a set of six naturally occurring silicate minerals, 
  
• Amosite and crocidolite are considered the most hazardous asbestos fiber types; 
  
• All types of asbestos fibers are known to cause serious health hazards in humans.
  

The Bhilai Steel Plant was established in Russian collaboration in Durg district of Chattisgarh in 1959. The iron ore comes from Dalli- Rajhara mine, Coal comes from Kobra and Kargali Coal field.

• Metal extraction from ores occurs in many different ways involving physical, chemical and electrical means. 
  
• Even ores of the same metal sometimes require different methods of separation depending on the concentration of the metal and its chemical composition within the ore.
  
• Ores are naturally occurring sources of metal. 

Smelting is nothing but extraction of aluminium from its ore. Aluminium smelting plant’s location depends on availability of raw material and good supply of electricity. 

Depletion is a periodic charge to expense for the use of natural resources. Thus, it is used in situations where a company has recorded an asset for such items as oil reserves, coal deposits, or gravel pits etc. For plant and machinery depletion method is not used.

Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. The carbon monoxide produced by its combustion reduces iron oxide in the production of steel.

Khetri Nagar is a town in Jhunjhunu district of Rajasthan in India. It is part of the Shekawati region. Khetri is actually two towns, "Khetri Town" founded by Raja Khet Singhji Nirwan and "Khetri Nagar" which is about 10 km away from Khetri. Khetri Nagar, well known for its Copper Project, was built by and is under the control of Hindustan Copper Limited, a public sector undertaking under the Government of India. Khetri Nagar is also very well known with name of 'Copper'.

The Khetri Copper Complex in Rajasthan, operated by Hindustan Copper Limited, is a major facility established for the mining and production of copper.