Chemical element

Chemical element - Ore Deposits: An ore deposit, in its simplest terms, is a portion of the Earth's crust from which some industrial raw material can be extracted at a profit. As …

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Origin of granodiorite hosted Neoarchaean orogenic gold ore deposits

Table 1 summarises the stable isotopic studies made so far for QCVs emplaced in granite hosted gold deposits world-widewhich shows that though metamorphic, magmatic, …

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Quartz geochemical constraints on the origin of stratabound deposits

Stratabound deposits with origin-undetermined footwall quartz-pyrite stockwork mineralization in the Middle-Lower Yangtze River Valley metallogenic belt (Eastern China) …

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Origin of ore-forming fluids of the Dachang Sn-polymetallic ore deposit

The ore genesis model for the Dachang Snpolymetallic ore deposit has long been in dispute, and the major debate focuses on whether the stratiform and massive orebodies formed during the …

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Ore

Ore is metalliferous rock that can be mined and processed at a profit. Although a broader definition includes nonmetallic rocks like rock salt and gypsum, most geologists classify these …

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Ore Deposit

9 rowsThese terms apply to rocks, ore deposits, and landforms that owe their origin to such processes. Ore deposits may consequently be grouped as endogenetic when their origin is …

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Multiphase origin of the Cu–Co ore deposits in the western part of …

A correlation between the origin of the Cu–Co stratiform ore deposits and the Lufilian orogeny was proposed for the Nchanga mineralization by McGowan et al. (2003). …

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(PDF) Nickel Sulfide Ores and Impact Melts: Origin of the …

The ore deposits at Sudbury are one of the world's largest ore systems and are a classic case study that brings together very diverse datasets and ways of thinking.

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Origin of High-Grade Gold Ore, Source of Ore Fluid Components, …

The Meikle mine exploits one of the world's highest grade Carlin-type gold deposits with reserves of ca. 220 t gold at an average grade of 24.7. Skip to Main Content ... Poul …

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Iron oxide–apatite deposits form from hydrosaline liquids

Iron oxide–apatite (IOA or Kiruna-type) deposits typically consist of a magnetite-apatite-actinolite/diopside assemblage and are spatially associated with extensive Na-(Ca) …

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Origin of ore-forming fluids of Mississippi Valley-type (MVT) Pb-Zn

Analyses of fluid-inclusion leachates from ore deposits show that Na/Br ratios are within the range of 75–358 and Cl/Br 67–394, respectively, and this variation trend coincides with the seawater …

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LETTERS TO NATURE

evaporites in the origin of the Broken Hill ore deposits John F. Slack*, Martin R. Palmert§ & Brian P. J. Stevens* * US Geological Survey, National Center, MS 954, Reston, ...

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THE MIXING HYPOTHESIS AND THE ORIGIN OF MISSISSIPPI VALLEY-TYPE ORE

Anderson (1991) proposed that methane generated from the heating of kerogen in the wall rocks of Mississippi Valley-type (MVT) deposits diffuses into the ore zone, reducing …

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Ore Deposits | Geophysical Monograph Series

Ore Deposits: Origin, Exploration, and Exploitation is a compilation of diverse case studies on new prospects in ore deposit geology including atypical examples of mineral …

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Mineral Ore Deposits: Meaning, Origin and Types | Geology

These deposits are formed by crystallisation of magmatic melts in different environments. Principal types are: a. Magmatic Deposits and b. Hydrothermal Deposits. a. Magmatic Deposits: During the crystallisation of a magmatic melt, many minerals of economic value also get formed depending on the …

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Geological ore deposits

genetic model for the origin of the ore deposit; The most commonly used scheme is the genetic classification scheme. These deposits include: Orthomagmatic deposits are those that form …

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Origin of Ligongling ore-bearing breccia pipe in the Yangchuling

Apatite is ubiquitous in various lithologies of the deposit and serves as a sensitive recorder of magmatic and hydrothermal processes. In this study, we present a comprehensive …

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Chapter 2. Types of ore deposits and their origin

Types of ore deposits and their origin. The crustal abundance of geochemical elements that form ore deposits containing valuable metals that can be explored for economic gain is examined in …

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9 Ore Deposits and Economic Minerals – Mineralogy

An ore deposit is a mineral deposit that can be produced to make a profit. Thus, all ore deposits are mineral deposits, but the reverse is not true. ... so the name. The ores mined from the Kidd, Windy, Craggy, Rio Tinto, and other massive …

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Brief History of Birmingham, Alabama Iron Ore Mining

Ore tipple and railroad loading facilities at a Red Mountain Iron Ore Mine, ca1923. (USBM) Early surface mining took place along the outcrop on Red Mountain but subsequently moved …

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Ore Deposit Genesis | U.S. Geological Survey

Understanding the genesis of ore deposits and their behavior in the environment is a subject of great importance to the Nation. A relatively new tool to aid in these efforts to …

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Ore Minerals | Formation, Genesis, Occurrence

The type of ore deposit and the associated ore minerals can vary widely depending on the geology and mineralization processes involved, and different ore minerals may have …

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The Origin of Cu/Au Ratios in Porphyry-Type Ore …

Magmatic-hydrothermal ore deposits in porphyry stocks are the world's most important source of Cu and Mo and a significant source of Au, and their profitable exploitation often depends on a combined recovery of several …

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Mineral deposit

Mineral deposits form because some medium serves as a concentrating and transporting agent for the ore minerals, and some process subsequently causes the transporting agent to precipitate, or deposit, the minerals.

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Mineral deposit

Mineral deposits form because some medium serves as a concentrating and transporting agent for the ore minerals, and some process subsequently causes the transporting agent to precipitate, or deposit, the minerals.Examples of …

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CLASSIFICATION OF ORE DEPOSITS

53 Classification of Ore DepositsUnit 2 Mineral Veins' and attempted to show that most mineral deposits were formed according to this theory. Zimmerman in 1749 anticipated the idea of …

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Recognition, genesis and evolution of manganese ore deposits in

Manganese ore deposits are common in the Falang Formation of Ladinian age (Middle Triassic), southeastern Yunan, China. The deposits containing manganese oxide and …

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Nanoscale isotopic evidence resolves origins of giant Carlin-type ore

Carlin-type deposits are notoriously difficult to study because their mineralogy is not amenable to the traditional tools used to fingerprint the origins of metal enrichment …

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Tracing the origin of ore-forming fluids in the Piaotang tungsten

Tracing the origin of ore-forming fluids in the Piaotang tungsten deposit, South China: Constraints from in-situ analyses of wolframite and individual fluid inclusion ... The …

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Ore Deposit

Magmatic ore deposits may be defined as rocks of igneous origin (see IGNEOUS PROCESSES), which can profitably be mined for their constituent chemical elements.For example, the worth …

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Machine learning coupled with mineral geochemistry reveals …

1 Machine learning coupled with mineral geochemistry reveals the origin of ore deposits Guotao Sun a, b, c*, Qingdong Zeng d, e, f, Jia-Xi Zhou g. h a College of Resources and …

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86 questions with answers in ORE DEPOSITS | Science topic

Mineralization Process: Polymetallic ore deposits can form through various geological processes, including hydrothermal activity, magmatic activity, and sedimentary …

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Immiscible hydrous Fe–Ca–P melt and the origin of iron

The origin of iron oxide-apatite deposits is controversial. Silicate liquid immiscibility and separation of an iron-rich melt has been invoked, but Fe–Ca–P-rich and Si-poor melts …

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Origin Franklin ore deposit

The origin of the zinc deposits at Franklin and Sterling Hill, New Jersey, is a question of great interest to the student of mineralogy and ore deposits. Several excellent summaries of the …

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