placer deposit वाक्य
उदाहरण वाक्य
मोबाइल
- Placer deposits are formed by alluvial processes within rivers, streams and on beaches.
- Good placer deposits were found along Greenhorn Gulch and Boulder Gulch.
- The rich placer deposits of the Columbia Basin-Sonora district were found in 1853.
- They mine hard rock deposits and placer deposits left by glaciers.
- Deeper placer deposits may be sampled by trenching or drilling.
- Rarely, but importantly, gold, tin and platinum deposits can form in beach placer deposits.
- Opals which have weathered out of the in-place deposits are alluvial and considered placer deposits.
- But the placer deposits worked in the early years were quickly exhausted, and production crashed.
- The river sand garnet occurs as a placer deposit.
- Sedimentary placer deposits are known as'leads'or'deep leads '.
- Difficult-to-reach placer deposits may be mined by tunnels.
- Over 1 million ounces of gold have been recovered from placer deposits in the Circle district.
- During early colonial times there were gold exports to Per?from placer deposits which soon depleted.
- Naturally occurring lonsdaleite has also been identified in non-bolide diamond placer deposits in the Sakha Republic.
- Many Chinese lived in Central City during the early days working the placer deposits of Gregory Gulch.
- Lacking the placer deposits of many Utah mines, extracting Silver City's riches required labor-intensive hard rock mining.
- It is often found in placer deposits.
- The fissure veins produced 51, 000 ounces of gold, while the placer deposits produced 110, 000 ounces.
- About 200, 000 ounces ( 6.2 tonnes ) of gold has been produced from these placer deposits.
- The Montrose Placer Mining Company was formed to mine gold from placer deposits along the Dolores River.
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