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magmatic 2 and carbonate deposits

Some mineral deposits particularly those containing Ni Cr and Pt form by the separation of the metal sulphide or oxides in the molten form within an igneous melt before it crystallizes These are known as magmatic deposits They occur within theigneous rock from which they were derived such as a gabbro

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    Magmatic and Metallogenic Framework of AuCu Porphyry and Polymetallic CarbonateHosted Replacement Deposits of the Kassandra Mining District Northern Greece Chris R Siron1 1John FH Thompson Tim Baker2 Richard Friedman3 Pavlos Tsitsanis4 Sally Russell 4

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  • Magmatic ore deposits Chapter 2 Ore Deposit Geology

    Magmatic ore deposits also known as orthomagmatic ore deposits are deposits within igneous rocks or along their contacts in which ore minerals crystallised from a melt or were transported in a melt

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  • The Tiger Deposit A CarbonateHosted Magmatic

    The deposit is hosted in SilurianDevonian unmetamorphosed carbonate rocks of the Mackenzie Platform and occurs 7 km northeast of the Dawson thrust which broadly marks the northeast boundary of the Selwyn Basin A nearby Paleocene intrusion the Rackla pluton subcrops 3 km from the Tiger deposit

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  • Unusual mixed silica–carbonate deposits from magmatic

    1 Unusual mixed silica–carbonate deposits from magmatic2 hydrothermal hot springs Savo Solomon Islands 30 carbonate deposits are rare with only a few recognised worldwide most notably

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  • A REVIEW OF THE CONTRASTING BEHAVIOR OF TWO

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  • Special Issue MagmaticHydrothermal Ore Deposits

    Magmatichydrothermal fluid circulation systems in the Earth’s crust are related with intermediate to felsic hydrous magmas mainly at convergent plate margins providing heat and mass transfer for the formation of ore deposits including base precious and rare metals

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  • Magmatic Ore Deposits in Layered

    Reeftype and contacttype deposits in particular those in the Bushveld Complex South Africa are the world’s primary source of platinum and rhodium tables 2 and 3 fig 2 Reeftype PGE deposits are mined only in the Bushveld Complex Merensky Reef and UG2 the Stillwater Complex JM Reef and the Great Dyke Main Sulphide Layer

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  • Special Issue MagmaticHydrothermal Ore Deposits

    The mineralization at the Sasa PbZnAg deposit shows many distinctive features typical for base metal skarn deposits including 1 a carbonate lithology as the main immediate host of the mineralization 2 a close spatial relation between the mineralization and magmatic bodies of an intermediate composition 3 a presence of the prograde

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  • A REVIEW OF THE CONTRASTING BEHAVIOR OF TWO

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  • Multisourced metals enriched by magmatichydrothermal

    Stratabound deposits within late Carboniferous carbonate units in the Middle–Lower Yangtze River metallogenic belt are important copper producers in China Hitherto the genesis of these deposits has been debated due to poor constraints regarding the timing and source of the mineralization Therefore a magmatic origin of metals is most

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  • Economic geology Magmatic ore deposits 2

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  • Magmatic Ore Deposits in Layered

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  • Ore Deposits Magmatic Flashcards Quizlet

    Percent meltresiduum is 3 50 carbonate minerals and 20 SiO2 Carbonatites considered primary magmas Controversial origin may involve CO3silicate immiscibility Magmatic REE deposits often modified by magmatichydrothermal processes metasomatism as a result of high volatile contents of magmas resulting in redistributionandor

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  • CarbonateHosted Base Metal Deposits

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  • Mineral deposit Formation of mineral deposits Britannica

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  • Carbon isotope studies of auriferous quartz carbonate

    Highlights δ 13 C of quartz carbonate veins of two Archaean orogenic gold deposits Dharwar craton India are examined δ 13 C data of these venis match those of mantlemagmatic derived carbonates The age of gold mineralization overlaps with age of some of the granites in the craton Mineralizing fluids were either derived from mantle or liberated from granitic magmas

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  • Magmatic–hydrothermal origin of Nevada’s Carlintype gold

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  • Anatomy of PorphyryRelated Mineralised AuCuAgMo

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  • Intrusion Related Gold Deposits

    magmatic to dominantly magmatic with variable amounts of external or unexchanged waters probably introduced into the hydrothermal system during cooling Comments on genesis Although still regarded as controversial Intrusion Related Gold Deposits IRGD represents a new class of mineral deposit Sillitoe 1991 Thompson et al 1999 The

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  • Geochemical Characterization of Magnetite and

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  • Unusual mixed silica–carbonate deposits from magmatic

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  • 29 Alkaline intrusionrelated mineral system Geoscience

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  • Orthomagmatic quartz and postmagmatic carbonate

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