feet thickeners tertiary gold ore

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    WesTech offers equipment and working solutions for water wastewater and industrial applications. We will make your next project a success. Learn more

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  • The Principal Silver Ore Districts of the Nevada Outback

    The ores are oxidized lead-silver ores carrying some gold. They occur in Cambrian limestone which is much faulted and crushed and is part of a Paleozoic section 30 000 feet thick. The ore is associated with a great fault and is oxidized to a depth of 1000 feet. There are

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  • Original Sixteen to One Mine Inc.The Bible of the

    The richest ore in this shoot was confined to an area less than 40 feet square on the vein and came mostly from the 2 feet of quartz next to the hanging wall. A shoot that yielded 736 000 from an area of 14 by 22 feet on the vein was mined in the Oriental mine.

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  • Types of Placers

    The term "Tertiary gravel" is used broadly to designate extensive gold-bearing gravel deposits laid down in ancient streams approximately 50 million years ago. These often-rich channels were subsequently buried under as much as 1500 feet of younger gravels and volcanic material which effectively sealed and preserved the original placers.

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  • Platinum Group Metals Nickel Titanium Vanadium and Gold

    Apr 26 2020 · The ore fluids migrated into anticlinal traps along permeable fault and breccia zones (Loose and Boberg 1987 Loose 1988) and produced a mineralized zone 300 feet thick (Love and Antweiler 1973). Ore shipped from the district between 1914 and 1920 and ore recovered from the mine in 1942 averaged 3.5 Cu and 254 ppm Ag (Allen 1942).

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  • Original Sixteen to One Mine Inc.The Bible of the

    The richest ore in this shoot was confined to an area less than 40 feet square on the vein and came mostly from the 2 feet of quartz next to the hanging wall. A shoot that yielded 736 000 from an area of 14 by 22 feet on the vein was mined in the Oriental mine.

    Get Price
  • How a Thickener Works911metallurgist

    One tall thickener thus does the work of several relatively shallow thickeners of the same diameter. Floor space is conserved heat insulation is simple and effective and power is reduced. Furthermore all control of the washing operation is centered at a single point. Cyanidation and concentration of gold and silver ores

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  • Telluride Ores of Boulder County Colorado Telluride

    Based on physiographic evidence the known telluride ores are estimated to have formed under a rock cover 2600 to 4600 feet thick and at confining pressures in the range 78 to 360 bars. This estimate is consistent with confining pressures indicated by the arsenopyrite "barometer."

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  • Placerville Gold Districts of California

    The lode-gold deposits are massive quartz veins as much as 20 feet thick with numerous parallel stringers. The ore bodies are low to moderate in grade (1/7 to ¼ ounce of gold per ton) but the veins have been mined to depths of 2000 feet. The ore contains finely disseminated free gold and small amounts of pyrite.

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  • Montana DEQ > Land > abandonedmines > linkdocs > 92tech

    The ore contained 0.23 to 0.74 ounces of gold 0.37 to 6.6 ounces of silver and 0.77 to 3.96 percent copper per ton. Mine workings include open cuts three adits a shallow shaft and close to 1 200 feet of underground tunnels (Robertson and Roby 1951 WPA 1940).

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  • Montana DEQ > Land > abandonedmines > linkdocs > 50tech

    The ore bodies in the district are tabular in shape irregular in outline and uniform in thickness. Ore shoots dipped from 20 to 60 degrees near the outcrop but below 1 000 feet flattened out. The shoots varied from 50 to 200 feet in width and 100 to 800 feet in length. Nearly all of the ore

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  • Good things happening at Jerritt Canyon Mining

    Mar 07 2020 · The roaster thickener tank at Jerritt Canyon is one of the final steps in the processing of the ore. The solution next goes to the carbon-in-leach cyanidation circuit for recovery of the gold.

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  • Map Unit Descriptions Source

    inch to 3-feet thick planar beds. Shale grayish-red. Percentage of each lithotype varies through out the lateral and vertical extent of the formation. The Sequatchie Formation ranges from 250 to 440 feet in thick ness. Laterally equivalent to the Juniata Formation. Reedsville Shale (Ulrich 1911). Shale siltstone and minor limestone.

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  • The Principal Silver Ore Districts of the Nevada Outback

    The ores are oxidized lead-silver ores carrying some gold. They occur in Cambrian limestone which is much faulted and crushed and is part of a Paleozoic section 30 000 feet thick. The ore is associated with a great fault and is oxidized to a depth of 1000 feet. There are

    Get Price
  • ORE DEPOSITS IN THE VICINITY OF THE LONDON FAULT OF

    the London fault on the footwall side or within 4 000 feet of the Cooper Gulch fault on the hanging-wall side. Their distribution along these two major reverse faults is not uniform they are bunched near local centers of mineralization. The principal types of ores are (1) gold-bearing quartz-sulphide veins of the

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  • French Corral District (MRDS #10310616) AU

    The deposits are generally narrow and thin by comparison with many other Tertiary gravel mining districts being generally no wider than 1 500 feet and between 150 and 250 feet thick. The gravels were deposited by a southwesterly flowing main branch of the ancestral Yuba River.

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  • IRON ORE IN CASS MARION MORRIS AND CHEROKEE

    IRON ORE IN CASS MARION MORRIS AND CHEROKEE COUNTIES TEXAS. By ERNEST F. BURGHARD. Tertiary. Series. Recent. Eocene. Group and forma­ tion. d a fito oe o 0 3 O Cook Moun­ tain for­ mation. Mount Sel­ man for­ mation. Wilcox formation. Thick­ ness. Feet. 0-50 400 350 Lithology. Fluviatile deposits consisting of brown red or

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  • Types of Placers

    The term "Tertiary gravel" is used broadly to designate extensive gold-bearing gravel deposits laid down in ancient streams approximately 50 million years ago. These often-rich channels were subsequently buried under as much as 1500 feet of younger gravels and volcanic material which effectively sealed and preserved the original placers.

    Get Price
  • Arizona Geological Society Digest Volume VI November

    ber of ore deposits have been stripped away by erosion. "LATE" TERTIARY ORE DEPOSITS For many years the epithermal gold deposits and various manganese deposits in Arizona have been classed as late Tertiary. In fact the adjectives "epithermal" and "late Tertiary" have become essentially synonymous for them.

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  • Good things happening at Jerritt Canyon Mining

    Mar 07 2020 · The roaster thickener tank at Jerritt Canyon is one of the final steps in the processing of the ore. The solution next goes to the carbon-in-leach cyanidation circuit for recovery of the gold.

    Get Price
  • ORE DEPOSITS IN THE VICINITY OF THE LONDON FAULT OF

    the London fault on the footwall side or within 4 000 feet of the Cooper Gulch fault on the hanging-wall side. Their distribution along these two major reverse faults is not uniform they are bunched near local centers of mineralization. The principal types of ores are (1) gold-bearing quartz-sulphide veins of the

    Get Price
  • Tertiary RiversGOLD NUGGET HUNTINGNugget Shooter

    Oct 11 2009 · The high-grade ore was apparently liberated from oxidized sulfides leaving very little quartz and formed an enriched gouge seam from a quarter of aninch to 6 inches thick between a porphyry footwall and a slate hanging wall.At a depth of 40 feet the vein continued down between dioritic walls and con-tained some small kidneys of calcite and

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  • GEOLOGY OF SEDIMENTARY ROCK-HOSTED GOLD DEPOSITS

    Carlin-Type Gold Deposits in the Carlin Trend Nevada A B C Alluvium Sulfide breccia Tertiary intrusive Rodeo Creek unit Devonian limestone Gold mineralization (showing high grade) ox Limestone Limestone Silty Limestone Limy Siltstone decarbonatization ore zone boundry feeder jasperoid argillization silicification barite stibnite quartz

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  • Gold bearing deposits of California Part I

    The discovery of auriferous gravels in the Sierra range of California was the beginning of the new epoch. This find was made by James Wilson Marshall a partner in the mill who on January 19 th 1848 observed in the debris washed down by the tail-race a glittering fragment of a mineral unknown to him specting it to be gold he sought for further specimens and obtained in the course of a

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  • Telluride Ores of Boulder County Colorado Telluride

    Based on physiographic evidence the known telluride ores are estimated to have formed under a rock cover 2600 to 4600 feet thick and at confining pressures in the range 78 to 360 bars. This estimate is consistent with confining pressures indicated by the arsenopyrite "barometer."

    Get Price
  • GEOLOGIC MAP OF THE MORONGO VALLEY QUADRANGL.E

    Gold silver lead and tungsten A. Rose and Monte Cristo mines. NE sec. 19 W72 sec. 20 T. 2 N. R. 3 E. Gold and some copper ore said to occur in red hematite-stained quartz-calcite gangue that forms zone about 20 feet wide at least 2 000 feet long striking about N. 20° W. dipping

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  • Forest Hill District (MRDS #10310614) AU

    After intersecting the east-west trending channel drifting was carried out at least 4 000 feet along the channel. The auriferous gravel averaged 5 feet thick and 50 feet wide. Ore carts were drawn by horses to the mine s steam- powered 10-stamp mill. The gold

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  • Gold in California

    Lode-gold deposits appear as massive quartz veins as much as 20 feet thick with numerous parallel stringers. The ore bodies are low to moderate grade and the veins were mined to depths of 2000 feet. The ore contains finely disseminated gold and small amounts of pyrite and occur chiefly in slate.

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  • The Principal Silver Ore Districts of the Nevada Outback

    The ores are oxidized lead-silver ores carrying some gold. They occur in Cambrian limestone which is much faulted and crushed and is part of a Paleozoic section 30 000 feet thick. The ore is associated with a great fault and is oxidized to a depth of 1000 feet. There are

    Get Price
  • Forest Hill District (MRDS #10310614) AU

    After intersecting the east-west trending channel drifting was carried out at least 4 000 feet along the channel. The auriferous gravel averaged 5 feet thick and 50 feet wide. Ore carts were drawn by horses to the mine s steam- powered 10-stamp mill. The gold

    Get Price
  • Downieville Gold Districts of California

    The milling-grade ore usually averages 1/4 to 1/3 ounce per ton. Some ore shoots had stoping lengths of as much as several hundred feet. Some high-grade ore pockets have been taken from some of the mines. The Tertiary channel gravels are quartzitic often well-cemented and in places contain extremely coarse gold. Mines.

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  • Ouray County Colorado Gold Production

    The ore deposits are directly related to geologic structures and also to the forms of the intrusive bodies. Ores of the Red Mountain area are chimney deposits which are vertical cylindrical bodies a few feet to a few tens of feet in diameter in and near volcanic pipes

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  • Forest Hill Gold Districts of California

    Some of the gold-quartz veins were rich especially those that occur near serpentine. The veins are usually three to four feet thick and strike in a northwesterly direction. A number of small but rich pockets were found in the Three Queens mine the principal lode mine in the district.

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  • 55 feet short head tertiary crusher

    55 Feet Short Head Tertiary Crusher factjeugdnoord. 55 Feet Short Head Tertiary Crusher. He difference between standard short head and medium cone crusher 20150827 145101 cone crusher has a high crushing ratio high efficiency low energy consumption uniform particle size suitable for secondary and tertiary crushing of various ores rocks zhongxin heavy industries engineer pointed cone

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  • Placerville Gold Districts of California

    The lode-gold deposits are massive quartz veins as much as 20 feet thick with numerous parallel stringers. The ore bodies are low to moderate in grade (1/7 to ¼ ounce of gold per ton) but the veins have been mined to depths of 2000 feet. The ore contains finely disseminated free gold and small amounts of pyrite.

    Get Price
  • Telluride Ores of Boulder County Colorado Telluride

    Based on physiographic evidence the known telluride ores are estimated to have formed under a rock cover 2600 to 4600 feet thick and at confining pressures in the range 78 to 360 bars. This estimate is consistent with confining pressures indicated by the arsenopyrite "barometer."

    Get Price

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