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what rock ore is chromium inwhat rocks have gold in them

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The Serpentine Family of Rocks

Serpentine rocks are generally compact, of a dull to waxy luster, and of a smooth to splintery fracture , supplying the chromium ore used in the industrial arts , Through the process of decay of the rock it is washed down and, like gold, concentrated in alluvial deposits of platinum ore The precious garnet, pyrope, used as a gem, also ...

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Do all quartz deposits contain gold?

What country has the highest density of gold ore deposits? Why is gold frequently located in quartz rock? , through rocks at depth If the chemistry of the water is right, silica will go into solution from the surrounding rock, as will gold if it is present , then it is more likely that the resulting quartz veins will have gold in them ...

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Identifying Rocks : Identifying Gold Rocks

Jun 08, 2009· Gold is a very rare and precious metal that is soft, malleable and heavy, and it is often found with other minerals, such as quartz Learn about the differences between gold and fool's gold ,..

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"Do My Rocks Contain Gold?"

I suspect that most (but not all) of the readers who hit me up about possible gold in their rocks have limited knowledge or experience when it comes to gold ores or the presence of free-milling gold in host rock..

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Extracting gold from rock

Unlike alluvial gold, which is found as very small flakes on river banks, gold-bearing rocks have to be dug out of the ground We want pure gold, but gold-bearing rocks include lots of other materials such as quartz, calcite and the sulfides of other metals..

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General Types of Gold Deposits

The principal ore minerals of gold are the native metal, aurostibite, and the various tellurid The abundance of gold in the upper lithosphere is about 0005 ppm and the Au/Ag ratio is about 007 The average gold content of igneous-type rocks in parts per million is ultramafic, 0004; gabbro-basalt, 0007; diorite-andesite, 0005; and ...

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Rock and Mineral Uses

An ore of iron which is used in making steel, nails, kitchen appliances, furniture, tools, bridges, buildings, automobiles, construction equipment, manufacturing machinery, highway construction, shipbuilding, trains, railroads etc Powdered iron is used in magnets and auto parts..

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Common Green and Greenish Minerals and Rocks

Green or greenish rocks get their color from minerals that contain iron or chromium and sometimes manganese By studying a green rock's grain, color and texture, you can easily identify many of them This list will help you identify the most significant green minerals, along with notable ...

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Rocks & Minerals Definitions

The only ore of chromium A common constituent of peridotite rocks and the serpentines derived from them Also associated with corundum , It is a rare mineral found in the oxidized zones of lead deposits where lead veins have traversed rocks containing chromite..

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Is gold a rock

Gold is a metal, a pure element by the chemical symbol of Au Gold isn't a rock It is a chemical element, or, in the eyes of the geologist or miner, it is a mineral It is sometimes referred to ...

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rocks that have gold in them crusher machine

gold mill Gold Ore Rock Crusher Impact Flail Processing , Quality Stone crushing machine manufacturer provide china made crushers, what rock ore is chromium inwhat rocks have gold in them; View quotes >>Social Responsibility The Quarry Story Vulcan..

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Kidz Rocks

Some of the most interesting rocks for kids are metal or These types of rocks and minerals have some of the most brilliant colors found in nature Chrysocolla with its bright blue to the vibrant greens of malachite and rich gold of pyrite..

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Industrial Minerals, Ores, and Gems

from minerals, including metals, chemicals used in manufacturing, food additives, etc Ores are minerals that have a high concentration of a certain element, typically a metal Examples..

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Ore Deposit

Magmatic ore deposits are masses of igneous rock enriched in useful chemical elements to such an extent that it is feasible to mine them at a profit To be considered as ore, an accumulation of an element must combine high grade with large tonnage and must be accessible to mining operations..

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Discover chrome

Chromium ore, or chromite, occurs exclusively in rocks formed by the intrusion and solidification of molten lava or magma which is very rich in the heavy, iron ,..

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Copper is found in what type of rock

Some rocks will have different coloured bands around them, this is a good indication of metamorphic process Copper is what type of rock? Copper is a metal that is sometimes found in an un-compounded state in nature- termed "native copper"..

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What rocks have gold in them

gold does not form in a rock however it does forms along igneous rock and quarts veins For gold to be present one of these two rocks will more then likely be there as well , (In some large gold nuggets, pieces of quarts will be stuck to the gold)..

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IMPORTANT ORE MINERALS

Aluminum - The ore is mined from rocks that have been exposed to weathering in a tropical environment, bauxite The main ore minerals in bauxite are gibbsite, bohmeite, and diaspore , (rock salt) Chromium - The chief source is the mineral chromite which is found in large layered intrusives and serpentine bodi , Phosphorus - Main ore ...

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Rocks for Crops

Rocks for Crops - 257 South Africa Total population (2001 estimate): 43,586,097 , Mineral production is dominated by gold, diamonds, platinum-group metals, chromium, , carbonatites and kimberlites (some of them diamond bearing) have intruded the Precambrian and ,..

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Metallic Deposits

Metallic ores occur in every kind of rock and some varieties of soil , multimillionounce disseminated gold deposits have been found in sedimentary rocks in Nevada Hot springs deposits are minerals that formed in response to hot spring activity at the surface of the earth These can be rich in gold, silver, antimony, arsenic, and mercury ...

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What is Ore?

Ores are types of rock deposits that contain enough metal to be economically viable for mining There are many ways to extract ore from deposits Metals found in ores include gold and iron..

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List of Minerals

Chromite is the principal ore of chromium It occurs mostly in ultramafic cumulate rocks 312 Other oxides , Gold is commonly found in hydrothermal veins but it may be disseminated through a large volume of rock Gold may be concentrated in alluvial sediments (placer gold) which used to be the type of deposit gold was extracted from ...

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HOW TO IDENTIFY ROCKS TO FIND GOLD !!!

Dec 20, 2013· Want to find Gold Learn How to Identify the rocks that will help you understand where the Best place to start looking to find Gold will be We cover the ,..

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