Synonymer & Information om | Engelska ordet GOLD-BEARING


GOLD-BEARING

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Exempel på hur du använder GOLD-BEARING i en mening

  • Gregory found a gold-bearing vein (the Gregory Lode) in Gregory Gulch between Black Hawk and Central City.
  • Although plenty of placer gold was found there, gold-bearing quartz deposits were discovered in 1851, and mining those deposits for gold became the mainstay of the local economy for many years.
  • In 1876, the Standard Company discovered a profitable deposit of gold-bearing ore, which transformed Bodie from an isolated mining camp comprising a few prospectors and company employees to a Wild West boomtown.
  • Hydraulic mining had its precursor in the practice of ground sluicing, a development of which is also known as "hushing", in which surface streams of water were diverted so as to erode gold-bearing gravels.
  • Nuggets are recovered by placer mining, but they are also found in residual deposits where the gold-bearing veins or lodes are weathered.
  • Gold deposits were first recorded around Piggs Peak mine during modern times in 1872 and in 1884 a gold-bearing reef was discovered in the hills to the west by the prospector, William Pigg, after whom the town is named.
  • The Witwatersrand is the name given to the area that comprises the Greater Johannesburg metropole and the gold-bearing reef along which gold was discovered in 1886.
  • Gold production came from underground lode mines exploiting: gold-bearing quartz veins in metamorphic rocks (such as the Gold Standard, Sea Level, Dawson, Golden Fleece and Goldstream mines); skarns (at the Jumbo and Kassan Peninsula copper-gold mines); zoned mafic-ultramafic plutons, as at the Salt Chuck silver-gold-copper-PGE mine; and VMS deposits such as Niblack.
  • The block to the west has low-grade granite-greenstone belts with iron-manganese ores and to the east are younger gneisses of granitic and granodioritic composition with gold-bearing schist belts.
  • It was first reported in 1792 from the Orenburg district in the southern Urals, Russia, where it is found with topaz and chrysoberyl in the gold-bearing gravels of the Sanarka (nowadays probably, Sakmara River, Mednogorsk district, Orenburgskaya Oblast').
  • The boundaries of the Cariboo proper in its historical sense are debatable, but its original meaning was the region north of the forks of the Quesnel River and the low mountainous basins between the mouth of that river on the Fraser at the city of Quesnel and the northward end of the Cariboo Mountains, an area that is mostly in the Quesnel Highland and focused on several now-famous gold-bearing creeks near the head of the Willow River.
  • Much of the area through which he intended to travel was unexplored and unmapped, and Carnegie hoped to find good pastoral or gold-bearing land, and to make a name for himself as an explorer.
  • In the type locality the crystals are found in gold-bearing quartz-veins traversing granite or gneiss and associated with crocoite are quartz, embreyite, phoenicochroite and vauquelinite.
  • A gold dredge works by having large buckets that pull the gold-bearing earth up into its machinery to be processed, keeping the gold and spewing the waste (known as "tailings") out the back by way of a stacker.
  • Named for a gold-bearing bar on the Fraser River below, which was mined by Hawaiians (called "Kanakas" in the argot of the time), Kanaka Bar is the home of the office and main rancherie of the Kanaka Bar Indian Band of the Nlaka'pamux peoples, and is also the source of the name of Kanaka Bar Indian Reserve No.
  • In 1908, BCL switched to a new all-sliming processing plant that uses filter presses separating gold-bearing cyanide solution from fine-crushed ore to increase the efficiency of gold cyanidation.
  • The gold-bearing ore became scarcer the deeper the miners went and work underground diminished while the tailings were reprocessed.
  • The 2017 drill program confirmed the presence of a gold-bearing intermediate sulfidation epithermal system within the Quartz Rise lithocap.
  • The central part of the mining district is occupied by outcrops of the Merisi-Namonastrevi-Chalati subalkaline diorite-syenite-monzonite complex, which is surrounded by huge halos of gold-bearing hydrothermally altered rocks.
  • Choosing the optimal algorithm for a specific purpose can lead to a significant boost in accuracy: for example, the lithological mapping of gold-bearing granite-greenstone rocks in Hutti, India with AVIRIS-NG hyperspectral data, shows more than 10% difference in overall accuracy between using support vector machines (SVMs) and random forest.


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