Iron is the single most widely used metal, as well as being a necessary nutrient for human health, so yes, it is major.
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Yes, iron is considered a major mineral because it is required by the body in relatively large amounts. Iron is essential for the production of hemoglobin in red blood cells, which helps transport oxygen to tissues. Deficiency in iron can lead to anemia and other health problems.
Hematite is a common iron-containing mineral that is a major source of iron ore. It is commonly mined for its iron content, which is used in the production of steel.
Diamond is harder than iron. Diamond is the hardest known natural mineral and can scratch iron.
Hematite is a common mineral used as an ore of iron. It has a high iron content and is often processed to extract the iron for industrial use.
Iron oxide is a compound made of iron and oxygen, and it is not considered a mineral. Minerals are naturally occurring inorganic solids with a crystalline structure and a specific chemical composition. Iron oxide can be found in mineral form, such as hematite or magnetite.
Wood is a nonmetallic mineral resource. Coal, iron, and aggregate are metallic mineral resources.