Mineral Resources: Metal and
Nonmetal
Mineral resources are naturally occurring, inorganic substances found in the Earth's
crust. They are essential for industrial, technological, and economic development.
These resources are broadly classified into metallic minerals and non-metallic
minerals, each with distinct chemical compositions, properties, and applications.
1. Metallic Minerals
Metallic minerals are minerals that contain one or more metallic elements. These
minerals are the primary source of metals, which are extracted through mining and
metallurgical processes. Metals are characterized by their luster, malleability,
ductility, and conductivity.
Types of Metallic Minerals:
1. Ferrous Minerals:
o Contain iron (Fe) as a primary component.
o Examples:
Hematite (Fe₂O₃): A major source of iron, used in steel
production.
Magnetite (Fe₃O₄): Highly magnetic, used in iron and steel
industries.
Siderite (FeCO₃): An iron carbonate mineral, used as an iron
ore.
o Uses: Iron and steel production, construction, machinery, and
transportation.
2. Non-Ferrous Minerals:
o Do not contain iron as a primary component.
o Examples:
Aluminum: Extracted from bauxite (Al₂O₃·2H₂O). Used in
packaging, construction, and transportation.
, Copper: Found in chalcopyrite (CuFeS₂)
and malachite (Cu₂CO₃(OH)₂). Used in electrical wiring,
electronics, and plumbing.
Zinc: Found in sphalerite (ZnS). Used in galvanization and
batteries.
Lead: Found in galena (PbS). Used in batteries, radiation
shielding, and alloys.
Gold: Found as native gold (Au) or in quartz veins. Used in
jewelry, electronics, and currency.
Silver: Found in argentite (Ag₂S). Used in jewelry,
photography, and electronics.
3. Precious Metals:
o Rare and high-value metals.
o Examples:
Gold (Au): Used in jewelry, electronics, and as a financial
reserve.
Silver (Ag): Used in jewelry, photography, and industrial
applications.
Platinum (Pt): Used in catalytic converters, jewelry, and
chemical industries.
4. Rare Earth Metals:
o A group of 17 elements, including lanthanides, scandium, and yttrium.
o Examples:
Monazite ((Ce, La, Nd, Th)PO₄): A source of cerium, lanthanum,
and neodymium.
Bastnäsite ((Ce, La)FCO₃): A major source of rare earth
elements.
o Uses: Magnets, lasers, batteries, wind turbines, and smartphones.
5. Other Important Metals:
o Titanium: Found in ilmenite (FeTiO₃) and rutile (TiO₂). Used in
aerospace and medical implants.
o Nickel: Found in pentlandite ((Fe, Ni)₉S₈). Used in stainless steel and
batteries.
o Tin: Found in cassiterite (SnO₂). Used in soldering and tin plating.
Extraction and Processing of Metallic Minerals:
1. Mining: Extraction of ores from the Earth's crust using open-pit or
underground mining.
2. Concentration: Removal of impurities (gangue) through processes like:
o Froth flotation.
o Magnetic separation.
o Leaching (e.g., cyanide leaching for gold).
Nonmetal
Mineral resources are naturally occurring, inorganic substances found in the Earth's
crust. They are essential for industrial, technological, and economic development.
These resources are broadly classified into metallic minerals and non-metallic
minerals, each with distinct chemical compositions, properties, and applications.
1. Metallic Minerals
Metallic minerals are minerals that contain one or more metallic elements. These
minerals are the primary source of metals, which are extracted through mining and
metallurgical processes. Metals are characterized by their luster, malleability,
ductility, and conductivity.
Types of Metallic Minerals:
1. Ferrous Minerals:
o Contain iron (Fe) as a primary component.
o Examples:
Hematite (Fe₂O₃): A major source of iron, used in steel
production.
Magnetite (Fe₃O₄): Highly magnetic, used in iron and steel
industries.
Siderite (FeCO₃): An iron carbonate mineral, used as an iron
ore.
o Uses: Iron and steel production, construction, machinery, and
transportation.
2. Non-Ferrous Minerals:
o Do not contain iron as a primary component.
o Examples:
Aluminum: Extracted from bauxite (Al₂O₃·2H₂O). Used in
packaging, construction, and transportation.
, Copper: Found in chalcopyrite (CuFeS₂)
and malachite (Cu₂CO₃(OH)₂). Used in electrical wiring,
electronics, and plumbing.
Zinc: Found in sphalerite (ZnS). Used in galvanization and
batteries.
Lead: Found in galena (PbS). Used in batteries, radiation
shielding, and alloys.
Gold: Found as native gold (Au) or in quartz veins. Used in
jewelry, electronics, and currency.
Silver: Found in argentite (Ag₂S). Used in jewelry,
photography, and electronics.
3. Precious Metals:
o Rare and high-value metals.
o Examples:
Gold (Au): Used in jewelry, electronics, and as a financial
reserve.
Silver (Ag): Used in jewelry, photography, and industrial
applications.
Platinum (Pt): Used in catalytic converters, jewelry, and
chemical industries.
4. Rare Earth Metals:
o A group of 17 elements, including lanthanides, scandium, and yttrium.
o Examples:
Monazite ((Ce, La, Nd, Th)PO₄): A source of cerium, lanthanum,
and neodymium.
Bastnäsite ((Ce, La)FCO₃): A major source of rare earth
elements.
o Uses: Magnets, lasers, batteries, wind turbines, and smartphones.
5. Other Important Metals:
o Titanium: Found in ilmenite (FeTiO₃) and rutile (TiO₂). Used in
aerospace and medical implants.
o Nickel: Found in pentlandite ((Fe, Ni)₉S₈). Used in stainless steel and
batteries.
o Tin: Found in cassiterite (SnO₂). Used in soldering and tin plating.
Extraction and Processing of Metallic Minerals:
1. Mining: Extraction of ores from the Earth's crust using open-pit or
underground mining.
2. Concentration: Removal of impurities (gangue) through processes like:
o Froth flotation.
o Magnetic separation.
o Leaching (e.g., cyanide leaching for gold).
