are ores formed

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    How are ores formed
    Metallic ore deposits form after geothermal concentration. Then the structure collapses, the deposits settle until shifted by the teutonic plates. Metallic ore can be found anywhere however there are areac of concentration based on the former edged of bodies of water.

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    How are Metals Formed? - Ency123
    The large iron ore deposits in Kiruna, in northern Sweden, were formed in this way. As the molten rocks cool, a mixture of minerals, gas and hot water forces its way into cracks in the rocks. This mixture also cools and hardens to form thin lines that are rich in metallic minerals like lead, copper and zinc.

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    Hydrothermal Ore Deposits Flashcards | Quizlet
    Ores formed by hydrothermal processes (hydrothermal veins), Ores formed by igneous processes within the earth (gravity settling), Ores formed by sedimentary processes (Residue of bauxite) What are the three main groups of ore deposit? Hydrothermal ore deposits are an important and varied group of ore deposits that form many of the worlds

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    How Gold Ore is Formed · ‎Genesis
    The origin of mineral veins, including those in which gold is contained, has long been discussed by geologists. The old theory that the quartz of veins was originally in a molten condition and was ejected from below into fissures is no longer maintained, although in 1860 H. Rosales brought forward evidence in its favour as far as the Victorian lodes are concerned.

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    How can ores be formed? | Yahoo Answers
    Jun 20, 2011· Best Answer: There are many different types of ores that form by many different processes. But to give you one example, the copper ores in Arizona (mostly the mineral chalcopyrite) were formed by hydrothermal fluids (hot water) at great depth. The copper bearing fluid was created by igneous activity

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    Classroom Resources - Geoscience Australia
    Strategic Priorities. We apply our diverse professional expertise to the opportunities and challenges that face our nation. Corporate Documents. A range of documents govern our operations and provide information about our projects and initiatives.

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    how are ores formed
    How are ores formed - The Q&A wiki . Where can ores be formed?In areas of volcanic intrusion, areas of hydrothermal deposition, and even in leached soils. How is iron ore formed? , and they eventually formed large deposits of magnetite and haematite

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    How Is Copper Formed? | Reference.com
    How Is Copper Formed? 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, the final deposits have a high concentration.

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    Ore genesis - Wikipedia
    Various theories of ore genesis explain how the various types of mineral deposits form within the Earth''s crust. Ore-genesis theories vary depending on the mineral or commodity examined. Ore-genesis theories generally involve three components: source, transport or conduit, and trap.

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    Processes of Ore Formation
    Depending upon whether an ore deposit formed at the time of and together with the enclosing rock, or was introduced into it by subsequent processes, they are classed as: Syngenetic - A deposit formed at the same time as the rocks in which it occurs.

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    Metallic Deposits - CliffsNotes Study Guides
    Metallic Deposits Metallic ore deposits , however, are relatively rare concentrations of metal‐bearing minerals (usually sulfides) that contain enough metal to be profitably mined. Again, the profit line is dependent on a number of economic factors.

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    How do iron ore deposits form? - Quora
    Contact ores – Iron ore deposits formed at or near the contact between igneous rocks and sedimentary rocks are normally composed of magnetite and hematite with associated carbonates and pyrite. The ore deposits are usually in the sedimentary rocks as irregular or tabular replacement bodies.

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    How Are Minerals Formed? | Reference.com
    Minerals are formed under a variety of conditions, including when molten materials cool, when liquids evaporate or cool and under high temperatures and pressures. Minerals are found in the earth''s crust and mantle, and many were created when feldspar and quartz reacted with other materials during

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    Ore deposit | geology | Britannica.com
    The major ores of gold contain gold in its native form and are both exogenetic (formed at the Earth’s surface) and endogenetic (formed within the Earth). The best-known of the exogenetic ores

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    ore - Students | Britannica Kids | Homework Help
    An ore is a natural combination of minerals from which metals can be extracted at a profit. Originally the term ore was applied only to metallic minerals, but the term now includes nonmetallic substances that have been deposited in rock after its formation. All metals come from ore deposits found in the Earth’s crust. Raw ores bear little resemblance to familiar metals such as chromium or

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    Iron ore: how our greatest asset is formed
    Iron ore, for example, which is our main product, occurs in its oxide, carbonate, sulphate and silie forms. The largest sources of iron ore on the planet are known as banded iron formations (BIFs), known in Brazil as itabirites and jaspelites.

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    Ore - Wikipedia
    The ores must be processed to extract the elements of interest from the waste rock and from the ore minerals. Ore bodies are formed by a variety of geological processes. The process of ore formation is called ore genesis Ore deposits. An ore deposit is an accumulation of ore.

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