slate rock ores gold

  • Virtual Tour of Maine's Mines and Quarries

    from the gold rushes in the West found a similarity between the metal-bearing rocks of Maine and ore deposits of the western stat There was great excitement as mining companies were organized, buildings were erected, expensive machinery was installed, , Virtual Tour of Maine's Mines and Quarries.

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  • C26 – Dictionary of American Regional English – UW–Madison

    What special kinds of stone or rock are there in this part of the state? (Open question) LIMESTONE280 SANDSTONE274 GRANITE179 NR168 SHALE76 SLATE69 FLINTROCK61 QUARTZ56 SANDROCK49 FLINT38 GRAVEL34 SOAPSTONE32 NH31 LIMEROCK21 FLINTSTONE19 FIELDSTONE18 BLUESTONE16 AGATE15 MARBLE14 FLAGSTONE13 MICA12 SLATE ROCK11 LAVA10.

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  • Rocks and Minerals Slide Show - Volcano World

    Slate is a fine-grained metamorphic rock with perfect cleavage that allows it to split into thin sheets Slate usually has a light to dark brown streak Slate is produced by low grade metamorphism, which is caused by relatively low temperatures and pressur Slate.

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  • In What Rock Formations Can Gold Be Found? | Sciencing

    Apr 24, 2017· Intrusive rock is typically very hard and erodes slowly This allows the surrounding rock to be worn away by wind and water, leaving only the harder rock in place Heavy particles, such as gold, are likely to accumulate against the harder rock while the lighter materials are more easily moved away.

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  • The Nonfuel Mineral Resources of Pennsylvania

    type of rock that was quarried nearby Pennsylvania is also known for its slate quarri Slate is a metamorphic rock The word “metamorphic” means “changed form” Metamorphic rocks were changed from their original form by heat and/or pressure in the earth Marble is another metamorphic rock Before their forms were changed, marble was.

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  • GFG Hits Gold Mineralization at Slate Rock and Crawford

    Jun 20, 2019· Slate Rock The Slate Rock target encompasses a 05 by 2 kilometre prospective trend (see Figure 2) where limited historic work identified gold mineralization associated with diorite and felsic porphyry in an area of extensive till cover Historic grab samples of boulders returned up to 1810 g/t Au in altered diorite.

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  • Gold in California: California - Gold, Geology & Prospecting

    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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  • Gold bearing slate - GOLD PROSPECTING - Nugget Shooter Forums

    May 03, 2010· if you are getting gold, I would say you are in the right spot There are many regions in the mother lode that are composed of slate and slate like rock Those formations do have intrusive quartz veins that carry gold Also the slate bedrocks are perfect traps for placer gold If you are not finding gold, just keep sampling!.

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  • Virtual Tour of Maine's Mines and Quarries

    from the gold rushes in the West found a similarity between the metal-bearing rocks of Maine and ore deposits of the western stat There was great excitement as mining companies were organized, buildings were erected, expensive machinery was installed, , Virtual Tour of Maine's Mines and Quarries.

    【Get Price】
  • slate rock ores gold - bongard-peinture-fribourgch

    Are gold rings always bad for the environment? slate Sep 21, 2010 A "rich" mine might contain just a few tenths of an ounce of gold per ton of ore a "poor" one would have a few hundredths of an ounce per ton gold is often found in rock that happens.

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  • Rocks and Gems - Prospecting Texas

    Most of north east Texas has iron ores and some gold out of them and various rocks out of the mountains in Oklahoma that washed down the same time the center of Texas was filling up Central east Texas has iron ore, gold, lead and silver in the galena’s of the sandstones of far east Texas.

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  • Slate - Wikipedia

    Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphismIt is the finest grained foliated metamorphic rock Foliation may not correspond to the original sedimentary layering, but instead is in planes perpendicular to the direction of metamorphic compression.

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  • ORE DEPOSIT TYPES AND THEIR PRIMARY EXPRESSIONS KG

    A well known aspect of ore deposit expression is the association of particular ore types with particular host rock assemblages, ie, the ore-host rock association (eg, Stanton, 1972) This association broadly reflects the geological environment and processes that have formed the ore.

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  • can you find gold in slate slabs (Page 1) / Hard Rock Gold

    Jun 15, 2017· Gold can occur in slate but is not partricularly common and as someone said above, more commonly occurs in quartz in the slate However attempts have been made to mine gold-bearing slate in Victoria (eg Kamarooka, Wedderburn) but grades are low and recovery is difficult from graphite-rich rocks ("preg-robbing" carbon).

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  • Finding gold ore – How much is gold worth? (part 1)

    Nov 16, 2012· The value of the big rock gold specimen has an interesting tale There are two cuts on the big rock to sample for gold to rock concentration One cut runs in a particular direction and it yielded 33% gold for the lowest golds yield in the rock concentration This is the small rock sample from that cut It yielded a 33% concentration or ratio of gold to rock material.

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  • Are gold rings always bad for the environment? - slate

    Sep 21, 2010· A “rich” mine might contain just a few tenths of an ounce of gold per ton of ore; a “poor” one would have a few hundredths of an ounce per ton , gold is often found in rock that happens.

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  • Gold in lgneous,Sedimentary, And Metamorphic Rocks

    Gold in lgneous,Sedimentary, And Metamorphic Rocks Gold in Igneous, Sedimentary, And Metamorphic Rocks , Analyses of gold in igneous rocks made before 1955-----­ , these two elements in important or Horn and Adams ( 1966 ), with the aid of a computer and assumptions.

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  • General Types of Gold Deposits - Minelinks

    Gold-silver and silver-gold veins, lodes, stockworks, and silicified zones in a complex geological environment, comprising sedimentary, volcanic, and various igneous intrusive and granitized rocks Deposits in this category combine nearly all the epigenetic features described in categories 4 and 5.

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  • Virtual Tour of Maine's Mines and Quarries

    from the gold rushes in the West found a similarity between the metal-bearing rocks of Maine and ore deposits of the western stat There was great excitement as mining companies were organized, buildings were erected, expensive machinery was installed, , Virtual Tour of Maine's Mines and Quarries.

    【Get Price】
  • Extracting gold from rock - OpenLearn - Open University

    We used mercury to get the gold out of the powdered rock Gold, like most minerals, can be 'dissolved' in mercury to form what's called an amalgam An amalgam is a physical mixture, a type of alloy This is a comparatively straightforward way of separating the gold from the rock, as the rock.

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  • The occurence of gold in sandstones and shale - GPEX

    Apr 23, 2013· If you have in mind gold included in the sediments before they turned to rock, it can show in sandstones and conglomerates as petrified placers, but the silt that eventually becomes shale, then slate, would be unlikely to host gold deposits because the gold has such a high specific gravity that it drops out of the water long before the silt.

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