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Copper mining in Michigan Wikipedia

A number of copper mines also contained a notable amount of silver, both in native form and naturally alloyed with the copper. Halfbreed is the term for an ore sample that contains the pure copper and pure silver in the same piece of rock; it is only found in the native copper deposits of

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CHALCOCITE (Copper Sulfide)

Chalcocite is an important copper mineral ore. It has been mined for centuries and is one of the most profitable copper ores. The reasons for this is its high copper content (67% atomic ratio and nearly 80% by weight) and the ease at which copper can be separated from sulfur.

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Copper Mineral Information photos and Facts, Native Copper

Associated with various copper minerals, most commonly with the oxidized ores, cuprite, malachite and azurite. Most of the copper of commerce is obtained from one or the other of its sulfides. Some, however, is found as the native metal. Copper, often contains small amounts of silver, bismuth, mercury, etc.

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A Comparison of the Bisbee and Morenci, Arizona, Copper

The state of Arizona is the biggest supplier of copper in the United States. My grandpa was employed at both the Bisbee and Morenci mines in Arizona, where he operated an ore dump truck for over 30 years.

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Ores And Minerals Chemistry

3. What is mineral ore used for? Ans Ore is a deposit of one or more precious minerals in the Earth's crust. The most important ore deposits, such as copper, silver, and iron, contain metals that are essential to industry and trade. Copper ore is mined for a wide range of industrial applications.

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How to Locate Copper Deposits Sciencing

Remove samples of the rocks and take them back to the lab for testing. If the rocks have a high part per million count of copper, then you may have found a copper deposit. How much copper needs to be in the ore before you mine the deposit depends on the method you wish to use to extract the copper.

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copper processing Definition, History, & Facts Britannica

Copper processing, the extraction of copper from its ores and the preparation of copper metal or chemical compounds for use in various products. In its pure form or as an alloy, copper (Cu) is one of the most important metals in society. The pure metal has a face-centred cubic crystal structure, and

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Minerals of the Lake Superior Region Lake Superior

Minerals of the Lake Superior Region. The region is world famous for vast deposits of iron ore and native copper. During the last 150 years, the rocks have yielded immense tonnages from those deposits and attracted early settlers to the iron and copper mines. Our regional ores were critical in helping the Allies win World Wars I and II

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What raw materials does copper come from? Quora

There are a range of copper ores, often more than one in the same mine or deposit. Most are sulfides, some oxides, carbonates and some contain antimony or arsenic. The sulfur and other elements must be burned off in the initial step of refining

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Rock and Mineral Resources Geology

These crystals may settle onto the bottom of the intrusion, concentrating ore minerals there. Chromite and magnetite are ore minerals that form in this way. Liquid immiscibility sulfide ores containing copper, nickel or platinum may form from this process. As a magma changes, parts of it may separate from the main body of magma.

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Properties of Ores and Other Minerals of Economic Importance

Properties of Ores and Other Minerals of Economic Importance; Mineral Group or Mineral Chemical Composition Habit, Cleavage, Fracture Usual Color Hardness Streak Specific Gravity Other Properties Type(s) of Rock in Which the Mineral is Most Commonly Found Greenish-black 4.2 Metallic luster; softer than pyrite. The most common copper ore

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Minerals of the Lake Superior Region Lake Superior

Minerals of the Lake Superior Region. The region is world famous for vast deposits of iron ore and native copper. During the last 150 years, the rocks have yielded immense tonnages from those deposits and attracted early settlers to the iron and copper mines. Our regional ores were critical in helping the Allies win World Wars I and II

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Innovations Introduction to Copper Mining & Extraction

The barren rock, or gangue has to be separated from the sulfide minerals in order to smelt the metallic copper from the ore. By far the greatest proportion of copper is extracted from the sulfides of copper, iron and sometimes other metals. Such ores originate from sulfur-bearing volcanic magmas, which have separated into metal sulfides and siliceous melts.

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PORPHYRY DEPOSITS Earth science

The major products from porphyry copper deposits are copper and molybdenum or copper and gold. The term porphyry copper now includes engineering as well as geological considerations; It refers to large, relatively low grade, epigenetic, intrusion-related

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Is copper found in Igneous, Metamorphic or Sedimentary rocks?

Jun 21, 2010 · Copper-bearing minerals can be found in deposits hosted in a wide variety of rocks. Most of the world's copper production comes from "porphyry" deposits, which by definition is igneous, but many copper deposits are also sedimentary (eg red beds), metamorphic (eg skarns), and volcanic (eg volcanogenic massive sulfides).

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List of copper ores Wikipedia

Following is a list of minerals that serve as copper ores in the copper mining process

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Copper Mining and Extraction Sulfide Ores

Copper minerals and ore are found throughout the Earth's crust. They occur in both sedimentary and igneous rocks. The outer 10 km of the crust contains 33 g of copper for every tonne of rock.

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Classroom Resources Geoscience Australia

Rocks and minerals are all around us. We see and use them every day, without even realising it. Minerals are the building blocks of rocks. This booklet has been developed as an Earth Science companion for teaching primary and secondary level Science, in particular Year 8 Earth and Space Science. Student activities are included.

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Zinc Earth Sciences Museum University of Waterloo

Sphalerite, or Zinc Sulphate. University of Waterloo Earth Sciences Museum Collection. Oxidized zone minera ls. Zinc sulphide is oxidized and enriched by interaction with the atmosphere, naturally acidic rainwater and nearby rocks and minerals (see "Copper the Red Metal", Wat on Earth, winter issue 2003). Zinc sulphide is changed to zinc sulphate.

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Bornite peacock ore The mineral Bornite information and

Bornite is an ore mineral of copper, and is known for its iridescent tarnish. "Peacock Ore", which is sold to amateur mineral collectors and tourists, is often labeled as a variety of Bornite. However, most Peacock Ore in reality is Chalcopyrite treated with acid, which produces a strongly-colored

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How Is Copper Formed? Reference

Copper forms as molten rock with small amounts of copper fluid crystallizes. As the larger rock continues to solidify, the fluid rich in copper moves into cracks, eventually solidifying as well. Because the copper solidifies later than other minerals within the larger rock

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Division of Geology and Mineral Resources Copper

It is often associated with lead and zinc massive sulfide deposits, and with quartz veins in metavolcanic rocks. In the Blue Ridge Province, copper has been found in massive-sulfide zinc- and copper-bearing pyrrhotite deposits in the Late Precambrian Ashe Formation in Carroll, Grayson, and Floyd counties, as copper minerals in fractures in the

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Wisconsin Geological & Natural History Survey » Copper

LAFAYETTE COUNTY Copper is reported as a rare secondary mineral in the zinc-lead ores in the Belmont and Calamine districts (Klemic and West, 1964). — Heyl et al. (1959) report copper as an oxidation product associated with other copper minerals

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Copper Geoscience Australia

These secondary copper minerals may form rich ore in the upper parts of many deposits, and owing to their characteristic green or blue colour, even small amounts are easily seen in the rocks in which they occur. Copper bearing minerals are commonly found in association with minerals which may contain gold, lead, zinc and silver. Resources

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ore National Geographic Society

Ore is a deposit in Earth's crust of one or more valuable minerals. The most valuable ore deposits contain metals crucial to industry and trade, like copper, gold, and iron. Copper ore is mined for a variety of industrial uses. Copper, an excellent conductor of electricity, is used as electrical wire. Copper is also used in construction.

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Copper Ore Slabs Michigan Native Copper StarStuff.Rocks

Copper ore can occur in veins, spots, streaks, or large masses mixed with the rock matrix. The color of the rock may be solid or a mixture of red conglomerate, green epidote, white quartz or black basalt. The copper has been buffed polished and coated to enhance the beauty of the piece. Photos are representative only. Each piece is unique.

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Silver Rocks and Minerals Mineral Processing & Metallurgy

The dark red silver ore is a sulphide of silver and antimony ; the light red contains arsenic in the place of antimony. The ores of silver occur in veins traversing granitic and gneissic rocks, clay slate, mica schist, limestone, and are usually associated with the ores of iron, copper, load (galena being always argentiferous), zinc.

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Copper Mining and Production Processes Explained

Copper ores. An ore is a rock containing enough valuable mineral to make it worth extracting. In the case of copper, it is worth extracting when there is about 2 kg of copper per 1,000 kg of ore (0.2%). Copper minerals are found in over one hundred varieties, although only a few have been worked for copper on a large scale.

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Copper mining. From ore to copper. SchoolScience.uk

The unwanted waste rock (gangue) falls to the bottom and is removed. The froth is skimmed off the surface and the enriched ore (mainly the copper mineral) is taken away for roasting. The mixture of water, foaming agent and paraffin is recycled. After this stage the enriched ore now contains about 25% copper by mass.

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Copper Ore 2" 4-6 Oz Rocks and Minerals Specimen Rough

Copper was found useful for its healing powers both internally and externally. Copper Ore 2" 4-6 Oz Rocks and Minerals Specimen Rough Healing Crystal Gemstone eBay Ancient cultures recognized copper as a healing mineral.

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