Ore
Natural rock containing economically viable minerals or metals.
Ore is natural rock or sediment that contains one or more valuable minerals, typically including metals, concentrated above background levels, and that is economically viable to mine and process. The value of the metals or minerals a rock contains must be weighed against the cost of extraction to determine whether it is of sufficiently high grade to be worth mining. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals.
- field
- Economic geology, mining
- known_for
- Source of valuable metals and minerals extracted through mining and processing
- origin
- Anglo-Saxon origin, meaning 'lump of metal'
Lore & Background
The word ore is of Anglo-Saxon origin, meaning 'lump of metal'. Ore bodies are formed by a variety of geological processes generally referred to as ore genesis and can be classified based on their deposit type. Ore grade refers to the concentration of the desired material it contains. A complex ore is one containing more than one valuable mineral. Minerals of interest are generally oxides, sulfides, silicates, or native metals such as copper or gold. Some ores, depending on their composition, may pose threats to health or surrounding ecosystems.
Reader's Guide
Ore is fundamental to human civilization as the primary source of metals and industrial minerals. Its classification into deposit types—magmatic, metamorphic, hydrothermal, and sedimentary—reflects the diverse geological processes that concentrate valuable minerals. Ore deposits are distinguished from mineral resources by economic viability. The processing of ore involves liberation and concentration to separate valuable minerals from gangue, which becomes tailings. Ore deposits are named after locations, discoverers, or other references. The study of ore genesis and classification is central to economic geology, guiding exploration and mining. Ore's significance lies in its role as the raw material for metals like copper, gold, iron, and rare elements, with each deposit type having distinct characteristics and global importance.
Did You Know?
- The word ore is of Anglo-Saxon origin, meaning 'lump of metal'.
- Ore grade refers to the concentration of the desired material it contains.
- A complex ore is one containing more than one valuable mineral.
- Some ores, depending on their composition, may pose threats to health or surrounding ecosystems.
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