Answer
Verified
462.9k+ views
Hint: Due to the presence of this element haematite ore has ferromagnetic properties and its initial separation occurs by magnetic separation. Also it is an oxide ore and is red to reddish brown in colour.
Complete step by step answer:
-First let us see what an ore is.
Any rock that contains one or more than one valuable minerals together, which can be extracted, refined and sold in the market at a profitable rate are known as ores. These ores are extracted from the minerals via mining and treated well enough (often via smelting) to extract the minerals from it and separate them from each other.
If any ore has a very high concentration of some desired mineral then it is known as high grade ore and if the concentration is low it is known as low grade mineral.
Metals are generally present in ores in the form of oxides, silicates, sulphides, native states such as copper, etc.
-The major ores of iron are:
(1) Haematite: In this ore iron is present as $F{e_2}{O_3}$.
(2) Limonite: In this iron is present as $FeO(OH).n({H_2}O)$.
(3) Magnetite: In this iron is present as $F{e_3}{O_4}$.
(4) Siderite: In this iron is present as $FeC{O_3}$.
(5) Goethite: In this iron is present as FeO(OH).
Haematite and magnetite (more than 60% iron) ores are known as “natural ores” or “direct shipping ores”, which means that they can be directly put into blast furnaces for iron making.
Haematite is basically an iron oxide ore with a molecular formula of $F{e_2}{O_3}$. Its colour is red, reddish brown to brown, black to steel or silvery grey. This ore is much harder than pure iron but also very brittle. It is anti ferromagnetic in nature below 250K and paramagnetic above 948K.Usually the haematite ore is found with silicate gangue and thus its benefaction (purification) involves a combination of many benefaction techniques.
Banded iron formations contain large hematite deposits. The Yellowstone national park in North America is a rich source for ores of gray hematite. Grey hematite is usually found in regions where there is still landing water or mineral hot springs. Here the mineral will precipitate out of water and collect at the bottom of springs, lakes, etc in the form of layers.
So, the correct answer is “Option A”.
Note: Do not confuse yourself between haematite and magnetite since both are high grade ores of iron. Haematite has iron in the form of $F{e_2}{O_3}$ while magnetite has iron in the form of $F{e_3}{O_4}$.
Complete step by step answer:
-First let us see what an ore is.
Any rock that contains one or more than one valuable minerals together, which can be extracted, refined and sold in the market at a profitable rate are known as ores. These ores are extracted from the minerals via mining and treated well enough (often via smelting) to extract the minerals from it and separate them from each other.
If any ore has a very high concentration of some desired mineral then it is known as high grade ore and if the concentration is low it is known as low grade mineral.
Metals are generally present in ores in the form of oxides, silicates, sulphides, native states such as copper, etc.
-The major ores of iron are:
(1) Haematite: In this ore iron is present as $F{e_2}{O_3}$.
(2) Limonite: In this iron is present as $FeO(OH).n({H_2}O)$.
(3) Magnetite: In this iron is present as $F{e_3}{O_4}$.
(4) Siderite: In this iron is present as $FeC{O_3}$.
(5) Goethite: In this iron is present as FeO(OH).
Haematite and magnetite (more than 60% iron) ores are known as “natural ores” or “direct shipping ores”, which means that they can be directly put into blast furnaces for iron making.
Haematite is basically an iron oxide ore with a molecular formula of $F{e_2}{O_3}$. Its colour is red, reddish brown to brown, black to steel or silvery grey. This ore is much harder than pure iron but also very brittle. It is anti ferromagnetic in nature below 250K and paramagnetic above 948K.Usually the haematite ore is found with silicate gangue and thus its benefaction (purification) involves a combination of many benefaction techniques.
Banded iron formations contain large hematite deposits. The Yellowstone national park in North America is a rich source for ores of gray hematite. Grey hematite is usually found in regions where there is still landing water or mineral hot springs. Here the mineral will precipitate out of water and collect at the bottom of springs, lakes, etc in the form of layers.
So, the correct answer is “Option A”.
Note: Do not confuse yourself between haematite and magnetite since both are high grade ores of iron. Haematite has iron in the form of $F{e_2}{O_3}$ while magnetite has iron in the form of $F{e_3}{O_4}$.
Recently Updated Pages
Identify the feminine gender noun from the given sentence class 10 english CBSE
Your club organized a blood donation camp in your city class 10 english CBSE
Choose the correct meaning of the idiomphrase from class 10 english CBSE
Identify the neuter gender noun from the given sentence class 10 english CBSE
Choose the word which best expresses the meaning of class 10 english CBSE
Choose the word which is closest to the opposite in class 10 english CBSE
Trending doubts
Which are the Top 10 Largest Countries of the World?
Fill the blanks with the suitable prepositions 1 The class 9 english CBSE
How do you graph the function fx 4x class 9 maths CBSE
The Equation xxx + 2 is Satisfied when x is Equal to Class 10 Maths
What organs are located on the left side of your body class 11 biology CBSE
Difference between Prokaryotic cell and Eukaryotic class 11 biology CBSE
Give 10 examples for herbs , shrubs , climbers , creepers
Change the following sentences into negative and interrogative class 10 english CBSE
How much time does it take to bleed after eating p class 12 biology CBSE