Iron is the fourth most abundant element, by mass, in the Earth's crust. The core of the Earth is thought to be largely composed of iron with nickel and sulfur. The most common iron-containing ore is haematite, but iron is found widely distributed in other minerals such as magnetite and taconite.
Iron has become an important architectural building component. It has been used in four common forms: wrought iron, cast iron, sheet iron, and steel. Cast iron was a major 19th century building material of the Industrial Revolution. Although brittle, it is remarkably strong in compression.
Iron–rich rocks in thin sectionMagnetite and hematite are opaque under the microscope under transmitted light. Under reflected light, magnetite shows up as metallic and a silver or black color. Hematite will be a more reddish-yellow color. Pyrite is seen as opaque, a yellow-gold color, and metallic.
To get to the bits of iron in the ore, you have to smelt it out. Smelting involves heating up ore until the metal becomes spongy and the chemical compounds in the ore begin to break down. Most important, it releases oxygen from the iron ore, which makes up a high percentage of common iron ores.
Hematite is not magnetic and should not respond to a common magnet. However, many specimens of hematite contain enough magnetite that they are attracted to a common magnet. This can lead to an incorrect assumption that the specimen is magnetite or the weakly magnetic pyrrhotite.
We will never run out of iron too because it comprises 5% of all Earth Crust. However, currently only those ores that contain above 50% iron are economic. We currently produce only measly amount of iron compared to what is on the crust.
World resources of crude iron ore are estimated to exceed 800 billion tons containing more than 230 billion tons of iron.
Iron is extracted from iron ore in a huge container called a blast furnace. Iron ores such as haematite contain iron(III) oxide, Fe 2O 3. The oxygen must be removed from the iron(III) oxide in order to leave the iron behind. Reactions in which oxygen is removed are called reduction reactions.
Formation. Iron ores are rocks from which metallic iron can be economically extracted. Most deposits of iron ore in the world are found in rocks known as banded iron formations (BIFs). These are sedimentary rocks that have alternating layers of iron-rich minerals and a fine-grained silica rock called chert.
Gold in its natural mineral form almost always has traces of silver, and may also contain traces of copper and iron. The ore is often brown, iron-stained rock or massive white Quartz, and usually contains only minute traces of gold.
Iron Ore is the most common mineral found underground. They are found at all stone levels, but most commonly from bedrock level - level 64. Veins of iron ore vary, but the most common is a 2x2x2 square (8 iron).
Origin of name : from the Anglo-Saxon word "iron" or "iren" (the origin of the symbol Fe comes from the Latin word "ferrum" meaning "iron"). Possibly the word iron is derived from earlier words meaning "holy metal" because it was used to make the swords used in the Crusades..
Uses of ironIt is used to manufacture steel and also used in civil engineering like reinforced concrete, girders etc. Iron is used to make alloy steels like carbon steels with additives such as nickel, chromium, vanadium, tungsten, and manganese.
In Mesopotamia (Iraq) there is evidence people were smelting iron around 5000 BC. Artifacts made of smelted iron have been found dating from about 3000 BC in Egypt and Mesopotamia.
Pristine and smooth pure iron surfaces are mirror-like silvery-gray. However, iron reacts readily with oxygen and water to give brown to black hydrated iron oxides, commonly known as rust.
27 Iron Facts for Kids
- Iron is a chemical element on the periodic table.
- Pure iron is a soft metal with a grayish color.
- Iron was most likely first discovered before the 5th millennium BC (5000 BC).
- Iron is a solid at room temperature.
- The symbol for iron is Fe.
- The atomic number for iron is 26.
Iron is a mineral that the body needs for growth and development. Your body uses iron to make hemoglobin, a protein in red blood cells that carries oxygen from the lungs to all parts of the body, and myoglobin, a protein that provides oxygen to muscles. Your body also needs iron to make some hormones.
Iron, one of the most abundant elements on Earth, helped give rise to entire civilizations and is the key ingredient in steel, without which many of our modern structures would not be standing. The story of iron's origins is astronomical, and it begins with the element being born from the explosion of stars.
Iron is a metal; in fact, people with too much iron in their bodies can set off metal detectors. But iron is also an essential micronutrient. Essential used in this way means that the body does not produce the nutrient; it has to be gotten from food.
Iron is a "special" element because of its nuclear binding energy. The very basic idea is that when you fuse two light elements together, you get a heavier element plus energy. Similarly, if you have a heavy element that undergoes fission and splits into two lighter elements, you also release energy.
According to BAML, around 1.5 tonnes of iron ore is required to produce one tonne of steel.
