banded disseminated ore

  • Deposit PortalNchanga-ChingolaDM GEODE

    The ore zone has a strike length of 750 m from 25 to 140 m below the surface where the mineralisation splits into a number of thin 2 to 3 m thick lenses. The ore within the Lower Banded Shale passes into disseminated pyrite within carbonaceous shale to the west south and east (Garlick and Haldane in Fleischer et al. 1976).

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  • Formation of Au-Bearing Antigorite Serpentinites and

    Magnetite ores from Kagan deposit (A) banded ore composed of magnetite and serpentinite bands (brown) (B) disseminated ore with oxidation products of copper sulfides (green) (C) banded massive ore with bands of serpentinite (D) massive ore (black) in contact with serpentinite. 2.2.

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  • STRUCTURAL PLAYS AND HYDROCARBON RESOURCES OF THE

    It consists mainly of banded ore veins hosted in greenschist and lesser disseminated ore in porphyritic rocks. The ore deposit is associated with extensive hydrothermally altered zones.

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  • Banded Disseminated Orevillamartinapalinuro

    Two major ore-forming stages with significant cross-cutting relationship are identified at Kaladawan South Stage (I) of the earlier massive banded disseminated barite-rich sulfide ores and Stage (II) of the later polymetallic sulfide–quartz veins with economically less importance.

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  • IRON ORE DEPOSITS IN EGYPTLinkedIn SlideShare

    Oct 16 2016 · I) Iron ore deposit of sedimentary nature Sedimentary iron ore deposit is a very limited occurrence being found only in the - One locality in Sinai Gabal Halal iron ore deposit Two localities in the Western Desert Aswan iron Ore Deposits Bahariya iron Ore Deposits Sinai Gabal Halal iron ore deposit It is located 4 km NW Sir Hadhira Sinai

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  • Glossary of geoscience termsThe Australian Museum

    Banded ore an ore consisting of alternating layers of ore minerals and gangue material and/or host rock. Density the ratio of an object s mass to its volume. (measured as grams per centimetre cubed g cm3) Disseminated ore an ore consisting of fine ore mineral particles

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  • A new classification of the gold deposits of Egypt

    other ore deposit types. It occurs in some Algoma-type Banded Iron Formation deposits such as at Abu Marawat (Botros 1991 1993b 1995a) and in the Um Nar area (Dardir and Elshimi 1992). Minor concen-trations of gold occur also in the volcanogenic Zn– Cu–Pb massive sulphide deposits of Um Samuki area (Searle et al. 1976).

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  • Sٍedimentary manganes and iron ore deposits

    Nov 23 2015 · EGYPTIAN IRON ORE DEPOSITS In Egypt economic iron ore deposits occur in two natures i) Iron ore deposit of sedimentary nature (Sedimentary iron ore deposit is a very limited occurrence being found only in the 2 localities in the Western Desert and one locality in Sinai) and ii) The Precambrian Banded Iron ore deposits (BIFs) (BIFs have being

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  • Design of a Large-Scale Concentrator for Treatment of a

    types of mineralogy within the banded/massive mineralisation category. The skarn ore exists as a mixture of mostly pyrite and silica based skarns with some magnetite skarn and quartz-pyrite altered sediments. Disseminated stockwork mineralisation was described as stockwork-disseminated (abbreviated to SWD ) and suffixed as

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  • Glossary of Mining TermsSEC

    Disseminated oreOre carrying small particles of valuable minerals spread more or less uniformly through the host rock. GneissA layered or banded crystalline metamorphic rock the grains of which are aligned or elongated into a roughly parallel arrangement.

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  • Platinum Group Minerals in Eastern Brazil Johnson

    Banded iron formation Banded rock formed by quartz (SiO 2) and hematite (Fe 2 O 3). Sometimes hematite is predominant and constitutes ore. Laterites Ferralitic soils associated to mafic/ultramafic rocks and other rocks rich in Fe. These soils are poor in Si and rich in Fe hydroxides and in acidic rocks where they are rich in Al hydroxides

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  • Blanket Gold MineCaledonia Mining Corporation plc

    The first type is the disseminated sulphide replacement type which comprises the bulk of the ore shoots. Typically these zones have a silicified core with fine sprays of disseminated arsenopyrite hosting the best grades. Disseminated sulphide replacement ore bodies range up to 50m in width with a strike between 60m and 90m.

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  • B2143 Table 6USGS

    Partial chemical composition (wt. percent) of disseminated monazite ore in dolostone marble and of monazite-hematite-apatite banded ores of Bayan Obo. Analyst P.H. Briggs. Analysis by inductively coupled plasma-atomic emission spectrometry (ICP-AES) for all oxides reported SiO2 Na2O P2O5 and CO2 were not determined.

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  • Banded Hematite Quartzite Ore Wikivillamartinapalinuro

    Banded Hematite Quartzite Ore Wikidokterdepraetere . Banded disseminated ore lotation of banded hematite jasper oresrimathatrustanded hematite quartzite ore wiki ellulematite a primary ore of iron and a pigment mineralhematite is the most important ore of iron and it has been used by people as banded iron formation close up these liquids are used in the float sink flotation of banded

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  • Formation of Au-Bearing Antigorite Serpentinites and

    Magnetite ores from Kagan deposit (A) banded ore composed of magnetite and serpentinite bands (brown) (B) disseminated ore with oxidation products of copper sulfides (green) (C) banded massive ore with bands of serpentinite (D) massive ore (black) in contact with serpentinite. 2.2.

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  • Deposit PortalNchanga-ChingolaDM GEODE

    The ore zone has a strike length of 750 m from 25 to 140 m below the surface where the mineralisation splits into a number of thin 2 to 3 m thick lenses. The ore within the Lower Banded Shale passes into disseminated pyrite within carbonaceous shale to the west south and east (Garlick and Haldane in Fleischer et al. 1976).

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  • Portrait of a Planet Fifth Edition

    Ore Deposits Sedimentary Deposits Banded Iron Formations (BIFs) Fe2 is soluble in water but Fe3 is not. These are found in the Proterozoic contain Hematite (Fe 2 O 3 Most suitable for large ore bodies and for low grade disseminated ore bodies. Usually ore bodies are mined by a combination of surface and underground methods.

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  • New insights into the genesis of IOCG deposits From a

    The banded ore consists of Fe-Cu-U-Au (Fig. 5 g-i) and the disseminated ore contains chalcopyrite and magnetite in dolomite (Fig. 5 j-k). The vein type mineralisation consists of Cu-bearing magnetite veins rich in REEs with fergusonite and xenotime being the most common (Fig. 5 l and 6). Download Download high-res image (976KB)

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  • Controls to low sulphidation epithermal Au-Ag mineralisation

    (Corbett and Leach 1998). Many low sulphidation veins are well banded and each band represents a separate episode of hydrothermal mineral deposition. Consequently recent metals and so contain low grade mineralisation within disseminated sulphides. or by mixing of ore

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  • 10GNOAris B.C.

    C. Contorted Disseminated Ore This type of material consists of highly contorted and brecciated banded ore along with stringers and lenses of re- mobilized chalcopyrite and other sulphides probably represent- ing the partial digestion of banded massive sulphide ore into the fragmental ore

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  • Major Mines Projects Black Mountain Mine

    Both ore bodies which also carry disseminated sulphides are hosted in the banded iron formation. The iron formation horizons are both separated by and enveloped in northwest-dipping schist which is overlain by a thick quartzite formation.

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  • i have a couple of geology type questions Yahoo Answers

    Oct 10 2008 · c. banded-iron formations. d. disseminated ore deposits. #3. At a divergent boundary between spreading tectonic plates in oceanic crust a. one plate subducts beneath the other. b. rock and magma rise to form the Mid-Oceanic Ridge. c. rock sinks to

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  • Wisconsin Geological Natural History Survey » Hematite

    Van Hise and Leith (1911) describe the ore as containing soft red hematite (paint ore) mingled with harder red slatey hematite and steel blue hematite nodules. Botryoidal banded oolitic and coarsely columnar needle ore also occur. The hematite in conjunction with other iron oxides replace iron carbonates in the ore.

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  • BANDED IRON FORMATION-RELATED HIGH-GRADE IRON ORE

    High-Grade Banded Iron Formation-Derived Iron Ore Erick Ramanaidou Martin Wells David Belton Michael Verrall Phanerozoic vein and disseminated gold in Nevada and char-acterizing the fluids involved with the development of the his-toric iron districts of North America.

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  • Unlocking the Gold Potential in Central Brazil the Faina

    The Sertão deposit is hosted by carbonaceous schist (a carbon-rich metamorphic rock) and banded iron formation (sedimentary rock with alternating layers of iron-rich oxides and iron-poor chert) in intensely deformed corridors (Fig. 4). Gold is mostly disseminated in a proximal white mica-siderite-pyrite-arsenopyrite hydrothermal assemblage

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  • ALTERATION VEIN TEXTURES AND FLUID INCLUSION

    banded bladed and lattice) and fluid inclusion characteristics of coexisting liquid-rich and vapor-rich fluid inclusions have been identified in mineralized samples. Common ore minerals are pyrite sphalerite galena chalcopyrite and minor marcasite electrum and native gold. Gold is mostly

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  • TECHNOLOGY METALS AUSTRALIA RECEIVES R D REFUND

    magnetite ore of 13 at 0.45 V 2 O 5 and North Pit dilution for banded and disseminated ore of 29 at 0.0 V 2 O 5 a Central Pit dilution for massive magnetite ore of 10 at 0.46 V 2 O 5 and Central Pit dilution for banded and disseminated ore of 20 at 0.0 V 2 O 5.) • Rounding errors may occur Capital Structure

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  • banded disseminated oreRijles Groningen

    Three general types of ores occur at Bayan Obo disseminated banded and massive or Broad zoning of these ore types occurs in the Main and East Orebodi Disseminated ores are in the outermost zone banded ores are in the intermediate zone and

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  • ChromiteWikipedia

    Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth s mantle also occurs in layered ultramafic intrusive rocks. In addition it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine magnetite serpentine and corundum.

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  • Mineralogy petrography geochemistry of magnetite ore and

    643 million tons iron ore with an average grade of 52.70 Fe 0.76 S and 0.11 P and is enclosed by alternation of quartzite sericite schist chlorite schist talc schist biotite schist actinolite schist. Magnetite occurs as massive banded cataclastic and disseminated ore and is associated with pyrite minor chalcopyrite and bornite.

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  • Mineral depositIron deposits Britannica

    There are two major types of deposit. The first and by far the most important is banded iron formations (BIFs) so called because they are finely layered alternations of cherty silica and an iron mineral generally hematite magnetite or siderite. BIFs can be divided into two kinds.

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  • Formation of Au-Bearing Antigorite Serpentinites and

    Magnetite ores from Kagan deposit (A) banded ore composed of magnetite and serpentinite bands (brown) (B) disseminated ore with oxidation products of copper sulfides (green) (C) banded massive ore with bands of serpentinite (D) massive ore (black) in contact with serpentinite. 2.2.

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  • Sampling and Estimating Disseminated Copper Deposits

    This banded character of outlying ore is exaggerated in drill holes or other vertical openings. Fifty feet of 2 per.cent ore in a drill hole maybe caused by a 5-ft. band along a steeply dipping fracture. The next 50 ft. of 0.5 per cent material may represent only a 5-ft. band

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  • (6 6

    interpret but the banded and disseminated ore In the largest northern cut (6 by 20 by 10 foe t) appears in three sides of the cut and seems to lie in a thin horizontal "blanket" The banding in the ore itself strikes N. 300 to 500 probably only 1 to 2 feet thick. and dips 550 to In the southernmost of the three cuts 40 feet away the ore o east.

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  • GABANINTHA VANADIUM PROJECT ADVANCES TO NAIF

    magnetite ore of 13 at 0.45 V 2 O 5 and North Pit dilution for banded and disseminated ore of 29 at 0.0 V 2 O 5 a Central Pit dilution for massive magnetite ore of 10 at 0.46 V 2 O 5 and Central Pit dilution for banded and disseminated ore of 20 at 0.0 V 2 O 5.) • Rounding errors may occur Capital Structure

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  • ChromiteWikipedia

    Chromite is found as orthocumulate lenses of chromitite in peridotite from the Earth s mantle also occurs in layered ultramafic intrusive rocks. In addition it is found in metamorphic rocks such as some serpentinites. Ore deposits of chromite form as early magmatic differentiates. It is commonly associated with olivine magnetite serpentine and corundum.

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