placer
/'pleisə/
Definition
- Noun:
- A natural deposit of sand, gravel, or similar material containing valuable minerals, especially gold or gemstones, that can be extracted by washing or sifting: A "placer" is a type of alluvial deposit formed by the action of water, where dense, valuable particles have been concentrated.
Examples of Usage
- Noun:
- Prospectors discovered a rich gold placer in the riverbed. (Prospectors discovered a rich gold placer in the riverbed.)
- The mining company specializes in extracting diamonds from placer deposits. (The mining company specializes in extracting diamonds from placer deposits.)
Advanced Usage
- "Placer mining": A specific mining method for extracting minerals from placer deposits by washing or dredging.
- Placer mining was responsible for several gold rushes in the 19th century. (Placer mining was responsible for several gold rushes in the 19th century.)
Variants and Related Words
- Placer claim (n): A legal mining claim on a placer deposit.
- He filed a placer claim for the area along the creek. (He filed a placer claim for the area along the creek.)
Synonyms
- Alluvial deposit: A general term for sediment deposited by flowing water, which may contain valuable minerals.
- Deposit: A more general term for a natural accumulation of a mineral or ore.
Related Phrases
- To work a placer: To engage in mining a placer deposit.
- They spent the summer working a small placer in the mountains. (They spent the summer working a small placer in the mountains.)
Noun
-
an alluvial deposit that contains particles of some valuable mineral
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