placer

listen to the pronunciation of placer
الإنجليزية - الإنجليزية
Someone who places or arranges something
Someone who deals in stolen goods; a fence
A lamb whose mother died and which transferred its attachment to a nearby locality
A deposit of sand or earth in a river-bed etc. which contains particles of gold or other precious minerals

Since time immemorial, people found that they could extract the gold from placer deposits by sifting the fine-grained material through a mesh: the technique of panning.

A deposit of earth, sand, or gravel, containing valuable mineral in particles, especially by the side of a river, or in the bed of a mountain torrent
placer는 설계한 logic을 사용하고자 하는 목표 FPGA chip상의 특정위치로 배치하는 역할을 수행한다
A deposit of sand, dirt or clay, often in an active or ancient stream bed, containing fine particles of gold or silver, which could be mined by washing The word is the Spanish for submarine plain, and rhymes with "passer "
An alluvial or glacial deposit containing particles of valuable minerals
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{i} one who places, one who puts down; usher, one who shows people to their seats; deposit of minerals close to the earth's surface
alluvial deposit of ore, usually as mineral-bearing gravel or sand
an alluvial deposit that contains particles of some valuable mineral
One who places or sets
A mineral deposit usually formed by rivers and streams which concentrate the heavy mineral particles such as gold
placer deposit
Natural concentration of heavy minerals caused by the effect of gravity on moving particles. When heavy, stable minerals are freed from their matrix by weathering processes, they are slowly washed downslope into streams that quickly winnow the lighter matrix. Thus the heavy minerals become concentrated in stream, beach, and lag (residual) gravels and constitute workable ore deposits. Minerals that form placer deposits include gold, platinum, cassiterite, magnetite, chromite, ilmenite, rutile, native copper, zircon, monazite, and various gemstones
placer miner
a miner who extracts minerals from a placer by washing or dredging
placer mining
mining valuable minerals from a placer by washing or dredging
placer mining
The obtaining of minerals from placers by washing or dredging.placer miner n. Oldest method of recovering gold from alluvial deposits. It takes advantage of gold's high density, which causes it to sink more rapidly from moving water than the lighter siliceous materials with which it is found. Panning, used by 19th-century miners, employed a pan in which a few handfuls of the gold-bearing soil or gravel and a large amount of water were placed; by swirling the pan's contents, the miner washed the siliceous material over the side, leaving the gold and heavy materials behind. Dredging is the most important placer-mining method today. Used worldwide is the bucket-ladder dredge, with its continuous chain of buckets rotating around a rigid adjustable frame called the ladder. In sluicing, a slightly sloping wooden trough called a box sluice, or a ditch cut in hard gravel or rock called a ground sluice, is used as a channel along which gold-bearing gravel is carried by a stream of water. Riffles placed transversely along the bottom of the sluice cause the water to eddy into small basins, retarding the current so that gold may settle
placers
plural of placer
placer

    الواصلة

    pla·cer

    التركية النطق

    pleysır

    النطق

    /ˈplāsər/ /ˈpleɪsɜr/

    علم أصول الكلمات

    [ 'plA-s&r ] (noun.) 1579. Agent noun of place.
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