placer

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Related to placers: placer mining, Placer gold

plac·er

 (plăs′ər)
n.
1. A glacial or alluvial deposit of sand or gravel containing eroded particles of valuable minerals.
2. A place where a placer deposit is washed to extract its mineral content.

[Spanish, shoal, placer, from Catalan placer, shoal, from plassa, place, from Medieval Latin placea; see place.]

placer

(ˈplæsə)
n
(Mining & Quarrying)
a. surface sediment containing particles of gold or some other valuable mineral
b. (in combination): placer-mining.
[C19: from American Spanish: deposit, from Spanish plaza place]

plac•er1

(ˈplæs ər)

n.
1. a natural concentration of heavy metal particles, as gold or platinum, in sand or gravel deposited by rivers or glaciers.
2. the site of a form of mining (plac′er min`ing) in which a placer deposit is washed to separate the gold or other valuable minerals.
[1835–45, Amer.; < American Spanish; Sp: sandbank < Catalan placel, derivative of plaza open place; see plaza]

plac•er2

(ˈpleɪ sər)

n.
1. a person who places or arranges things.
2. one of the winners of a race or other contest.
[1570–80]

plac·er

(plăs′ər)
A deposit of minerals, such as gold or magnetite, left by a river. The minerals are usually concentrated in one area because they are relatively heavy and therefore settle out of the river's currents more quickly than lighter sediments such as silt and sand. When mineral prospectors pan for gold, they look for placer deposits.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.placer - an alluvial deposit that contains particles of some valuable mineralplacer - an alluvial deposit that contains particles of some valuable mineral
alluvial deposit, alluvial sediment, alluvium, alluvion - clay or silt or gravel carried by rushing streams and deposited where the stream slows down
References in classic literature ?
Years of freighting and mining had followed, and, with a stake gleaned from the Merced placers, he satisfied the land-hunger of his race and time by settling in Sonoma County.
Miners came in on snowshoes from their placer claims twenty miles away to buy fresh bread from her, and paid for it in gold.
He was speculating, they contended, as if the whole country was made of gold, and no man could win who played a placer strike in that fashion.
A placer camp he knew was ephemeral, while a quartz camp abided, and he kept a score of men in the quest for months.
In fact, he played the dangerous game of pyramiding, and no more perilous pyramiding than in a placer camp could be imagined.
It was not a startling find, merely a low-pay placer where long hours of severe toil earned each man between fifteen and twenty dollars a day.
She untied the mouth and ran out into my hand as pretty a stream of gold as I have ever seen--coarse gold, placer gold, some large dust, but mostly nuggets, and it was so fresh and rough that it scarcely showed signs of water-wash.
Spring came on once more, and at the end of all their wandering they found, not the Lost Cabin, but a shallow placer in a broad valley where the gold showed like yellow butter across the bottom of the washing-pan.
For that matter, the gold-trace had become something more than a trace; it was a placer mine in itself, and the man resolved to come back after he had found the pocket and work over the ground.
We will now cut a series of small trenches at locations where others have previously mined the placers and in specific new areas of interest.
Klondike Star has concluded an agreement with Beron Placers whereby Beron will conduct placer mining operations on the Oro Grande placer claims.
It has been postulated by some workers that erosion of the conglomerate unit contributed a substantial part of the placer gold in the Klondike, and that the unit could be equivalent to the White Channel Gravel that hosts the bulk of the Klondike placers.