the case of the magnetite ores of edough massif n e

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2018 - bibgeolalg

Ore Geology Review, Volume 101, October 2018, Pages 312-329. ... a case study from Souk Ahras province, N-E Algeria. Arabian Journal of Geosciences, Volume 11, Issue 17, 1 September 2018, Article number 476. ... example from the Bou-Maiza complex (Edough massif, eastern Algeria). International Geology Review, Volume 60, Issue 4, pages 464-478. ...

Edough-Cap de Fer Polymetallic District, Northeast Algeria: II ...

Ore Geol Rev 27:53-89 CrossRef Marchev P, Kaiser-Rhormeier M, Heinrich C, Ovtcharova M, von Quadt A, Raicheva R (2005) Hydrothermal ore deposits related to post-orogenic extensional magmatism and core complex formation: the Rhodope massif of Bulgaria and Greece.

barr - Target Exploration

The Magnetite Deposits Of Berrahal (Edough Massif, NE Algeria: Mineralogical Data). 12.00 - 12.15: ... A Case Study. 15.15 - 15.30: ... Western Orebody, South Jordan: Variation In Ore Composition And Its Content Of Toxic Heavy Metals Available For Plant Absorption. 15.15 - 15.30: Tayel El-Hasan and Anwar Jiries.

Professeurs - Faculté des sciences et de génie - Université Laval

Huang X-W, Beaudoin G (2019) Textures and Chemical Compositions of Magnetite from Iron Oxide Copper-Gold (IOCG) and Kiruna-Type Iron Oxide-Apatite (IOA) Deposits and Their Implications for Ore Genesis and Magnetite Classification Schemes. Econ Geol 114:953-979. doi: 10.5382/econgeo.4651.

Reduction of Iron Oxides with Hydrogen—A Review

In other cases, if E a varies with x, the question of validity has to be asked because the Arrhenius dependence of T, the f(x) ... Prior oxidation of magnetite ore to Fe 2 O 3 leads to similar reduction behavior when compared with natural hematite; however, natural magnetite is hardly reducible due to low porosity and the formation of dense ...

FeTiMM - A new oxybarometer for mafic to felsic magmas

Figure S-1 Dependence of the Fe-Ti exchange coefficient between magnetite and rhyolitic melt on fO 2 and melt alumina saturation index. D Fe-Ti mgt/melt refers to (D FeOtot mgt/melt)/(D TiO 2 mgt/melt), whereas ASI refers to molar Al 2 O 3 /(CaO + Na 2 O + K 2 O). The dataset comprises magnetite-melt pairs from 50 different experiments performed at three different oxygen fugacity buffers ...

Earth Science Frontiers 2009 Issue S1 for youth - Oriprobe

Perspectives of Development of "Black-Shale" Type Ore on the Territory of the Republic of Uzbekistan ... Chemical Mobility and Mineralogical Variability in Edough Massif Micaschists(Annaba,Northeast Algeria) ... sur la Paléobiodiverité et les Paléoenvironnements"-UPMC-Laboratoire de Micropaléontologi-T.46-56;niveau 5;case 10-4 place Jussieu ...

Magnetite - Wikipedia

Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe 2+ Fe 3+ 2 O 4.It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself. With the exception of extremely rare native iron deposits, it is the most magnetic of all the naturally occurring minerals on Earth.

Bachir Henni, Bernard Guy

The ore-bearing bodies of the Edough massif correspond to stratiform (sometimes lenticular) layers of magnetite associated with both calcitic and calc-silicate rocks hosted in kyanite - staurolite - garnet schists in the vicinity of marbles.

Petrology, geochemistry, and evolution of the iron skarns along the ...

The Çatak and Küreci skarn districts are located approximately 10 km NW of Emet (Kütahya) in Western Turkey. The skarn and associated ore formations mainly occur at the contact between intrusive rocks of the Eğrigöz Plutonic Complex (EPC) and calcareous pelitic schists with limestone lenses of the Sarıcasu Formation and meta-carbonate rocks of the Arıkaya Formation. The major, trace ...

Nonlinear thermoremanence corrections for Thellier paleointensity ...

Single plagioclase paleointensity experiment has been an excellent tool to reliably estimate ancient geomagnetic field intensity. Although transparent plagioclases with magmatic nanophase magnetites have shown their potential for paleointensity estimation, in most cloudy plagioclases with exsolved magnetites, the problems of strong anisotropy as rod-shape magnetites, the hyperbolic tangential ...

Stable isotope study of the igneous, metamorphic and mineralized rocks ...

Sidi-Bouguenna microgranite is intruded into the Edough metamorphic complex and the sedimentary cover of El-Mellaha. It has a columnar aspect and sharp contacts with the country rocks showing very limited contact metamorphic effects. However, this intrusion has been hydrothermally altered ( Hilly, 1962 ).

(PDF) Miocene magmatic evolution in the Nefza district (Northern ...

Miocene magmatic evolution in the Nefza district (Northern Tunisia) and its relationship with the genesis of polymetallic mineralizations

Uranium-Lead Isotopic Variations in Zircons: A Case Study

The presence of uranothorite drastically affects the apparent ages in the zirons. (2) The uranothorite can be satisfactorily removed by an appropriate acid-washing procedure. (3) The uranothorite-free zircon concentrates are not homogeneous and show systematic variations in radioactivity and various isotopic properties as a function of average ...

Stability of the association fayalite + calcite within metamorphosed ...

The method is applied to the Edough massif, the easternmost crystalline massif of the Algerian coast. This massif hosts ancient deposits of magnetite hematite ores hosted in...

siderite — Traduction en français - TechDico

Nombreux exemples de traductions classés par domaine d'activité de "siderite" - Dictionnaire anglais-français et assistant de traduction intelligent.

Petrological, geochemical and isotopic characteristics of the Collo ...

Based on their petrological and geochemical characteristics, the Sidi-Mohamed ultramafic rocks were recently considered by Hadj-Zobir and Oberhansli (2013) and Bosch et al. (2014) as depleted sub-continental lithospheric peridotites tectonically incorporated into the gneiss units of the Edough massif during the Burdigalian (Bruguier et al., 2009).

Iron_ore - chemeurope

Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in colour from dark grey, bright yellow, deep purple, to rusty red. The iron itself is usually found in the form of magnetite (Fe 3 O 4), hematite (Fe 2 O 3), goethite, limonite or siderite.Hematite is also known as "natural ore".

Stability of the association fayalite + calcite within metamorphosed ...

We interpret the mineral assemblages observed in iron magnetite deposits, and in particular the association fayalite+calcite, which result from the me.

Stabilité de l'association fayalite + calcite dans les formations ...

is applied to the Edough massif, the most oriental witness of the metamorphic massifs of the Algerian coast; it contains ancient deposits of magnetite ± hematite ores hosted in kyanite-staurolite-garnet schists. The main minerals of the ore bodies are magnetite, hematite, siderite, quartz, calcite, fayalite, hedenbergite and

Edough-Cap de Fer Polymetallic District, Northeast ... - SpringerLink

The Edough-Cap de Fer area, in eastern Algeria (Fig. 1), is part of the internal zone of the Betic-Maghrebide belt (Durand-Delga 1969) that forms the westernmost extension of the Alpine chain derived from the Tethyian realm (Dercourt et al. 1986).This belt resulted from the Eocene to Miocene collision between the African (Gondwanan) plate and the European plate (e.g., Jolivet and Faccenna 2000).

Publications - SUERC Stable Isotope Laboratory | East Kilbride

SUERC Stable Isotope Laboratory Earth Sciences Publications. McGowan, R. R., Roberts, S. and Boyce, A. J. (2006) Origin of the Nchanga copper-cobalt deposits of the Zambian Copperbelt. Mineralium Deposita, 40(6-7), pp. 617-638.(doi: 10.1007/s00126-005-0032-8) Sánchez-España, J., Velasco, F., Boyce, A. J. and Tornos, F. (2006) Reply to the comments by Marignac and Cathelineau on the paper ...

The Richemont rhyolite dyke, Massif Central, France; a subvolcanic ...

Textural relationships provide evidence for a quenched silicate melt with less than 5% phenocrysts, consisting of albite (50%), quartz (20%), K-feldspar (20%), and muscovite (10%). The affinity with pegmatites arises from the ore mineralogy, with "uran-euxenite" and "wolframo-ixiolite" as the main rare-metal carriers.

Patyn Mt. Massif, Synzas River, Kemerovo Oblast, Russia

Petrography and isotope geochemistry of melilite rocks associated with the Patyn pluton. International Geology Review, 33 (7), 689-703. Belyaev, E. V. (2010, November). The polygenous nature of the Patyn ore—magmatic cluster (Mountainous Shoriya). In Doklady Earth Sciences (Vol. 435, No. 1, pp. 1420-1422).

Iron Ore Pelletizing Process: An Overview - IntechOpen

Induration processes were initially developed for ores composed of magnetite, since they are oxidized, producing hematite, and generating heat (−482.4 kJ/mol of Fe 3 O 4). In the case of ores composed of hematite, this heat liberation does not happen and needs to be compensated.

Mining Vibrating Screen - GN Separation Equipment Manufacturer

GN Mining Vibrating Screen Panel Types. Polyurethane Screen Panel-Coarse Screening. Screen Panel Opening 0.2-30mm. It is made of polyurethane wrapped metal skeleton. It is characterized by good wear resistance and strong corrosion resistance. The disadvantage is that it is not resistant to high temperature and the conductance is general.

Bernard GUY - Academia.edu

La méthode est appliquée au Massif de l'Edough, témoin le plus oriental des massifs métamorphiques du littoral algérien. Celui-ci contient d'anciens gisements et indices à magnétite ± hématite encaissés dans des schistes à disthène - staurotide - grenat.

Stabilité de l'association fayalite + calcite dans les formations ...

Day2 - The 28th Colloquium of African Geology - GSAf

Monsard, N., I. et al. Discussion: Room 3 Theme: Mineral Resources and ore forming processes Metallogeny and ore deposits of Africa 2 pm: Epithermal mineralization of the Tagmout deposit, Eastern Saghro, Morocco: Metallogenic characterization and fluid phases AZIZI, M. et al.

Characterization of Selected Mineral Ores in the Eastern Zone of Kenya ...

Based on the results obtained, it can be concluded that most of Katse iron ores are of a high-grade magnetite and low hematite ore that can be profitably exploited for the production of iron. Iron ore from four locations contains more than 82% Fe. This compares well with other iron ores from the main iron ore producing nations.

Did the massive magnetite "lava flows" of El Laco (Chile) form by ...

The El Laco magnetite deposits consist of more than 98 % magnetite but show field textures remarkably similar to mafic lava flows. Therefore, it has long been suggested that they represent a rare example of an effusive Fe oxide liquid. Field and petrographic evidence, however, suggest that the magnetite deposits represent replacement of andesite flows and that the textures are pseudomorphs. We ...

The composition and evolution of the continental crust: rare earth ...

The change from Archaean to post-Archaean r.e.e. patterns in the upper crust is not isochronous, but is reflected in the sedimentary rock r.e.e. patterns at differing times in different continents. On the basis of a model composition for the mantle, 36% of the potassium, 30% of uranium, 15% of lanthanum and 3 % of ytterbium are concentrated in ...

Diamond-bearing kimberlite fields of the Siberian Craton and the Early ...

This massif hosts ancient deposits of magnetite ± hematite ores hosted in kyanite-staurolite-garnet schists. The main minerals of the ore bodies are magnetite, hematite, siderite, quartz, calcite, fayalite, hedenbergite and garnet, resulting from the metamorphism of siderite + calcite + quartz rocks containing variable proportions of the ...

Stability of the association fayalite + calcite within metamorphosed ...

The method is applied to the Edough massif, the easternmost crystalline massif of the Algerian coast. This massif hosts ancient deposits of magnetite ± hematite ores hosted in kyanite-staurolite-garnet schists.

Structure des diagrammes de phases pour des systèmes chimiques à n ...

From a reaction matrix of a system with n independent components and n + k phases with fixed composition, we construct a k-dimensional diagram (the so-called affigraphy) whose intersection with a two-dimensional variety gives the structure of a class of phase diagrams of the system.

Stability of the association fayalite - NASA/ADS

Petrogenesis and Exploration of the Earth's Interior. Mineral ...

It also presents new case studies offering concrete examples of how to resolve sustainable urbanization and environmental issues. ... Cairo, Egypt. E-mail:mekkawi05@yahoo Introduction The magnetite and hematite mines are located in the Eastern Desert in Abu Subera area, of about 35 km far from Aswan city and is known as volcano-tectonic ...

Stabilité de l'association fayalite + calcite dans les formations ...

stability of the association fayalite + calcite within metamorphosed banded iron formations: the case of the magnetite ores of edough massif (n-e algeria). hal-00523266, version 1 - 6 oct 2010 bachir henni (a) (b) & bernard guy (b) a département sciences naturelles, ecole normale supérieure, b.p 92 kouba, 16050 alger, algérie b .

Mineral Deposits of North Africa | springerprofessional.de

Depletion of the high-grade ores in recent years has resulted in new exploration projects focused on lower-grade magnetite ores occurring in Algoma-type banded iron formation (or BIF, containing ca. 35 wt% Fe). Mauritania is the seventeenth largest iron producer in the world and currently has about 1.1 Gt of crude iron ore reserves.

The geology and geochemistry of the Maru Banded Iron-Formation ...

It consists essentially of a magnetite oxide facies with sporadic silicate facies composed of grunerite, garnet and rare stilpnomelane. In the BIF, Fe 2 O 3 (as total Fe) ranges from 44.07 to 58.41 % and SiO 2 from 24.74 to 42.67%. Relatively high values of Al 2 O 3 (2.00-8.97%) and MnO (2.29-9.37%) are characteristic of the iron-formation.

the case of the magnetite ores of edough massif n e

Our Projects

2018 - bibgeolalg

Edough-Cap de Fer Polymetallic District, Northeast Algeria: II ...

barr - Target Exploration

Professeurs - Faculté des sciences et de génie - Université Laval

Reduction of Iron Oxides with Hydrogen—A Review

FeTiMM - A new oxybarometer for mafic to felsic magmas

Earth Science Frontiers 2009 Issue S1 for youth - Oriprobe

Magnetite - Wikipedia

Bachir Henni, Bernard Guy

Petrology, geochemistry, and evolution of the iron skarns along the ...

Nonlinear thermoremanence corrections for Thellier paleointensity ...

Stable isotope study of the igneous, metamorphic and mineralized rocks ...

(PDF) Miocene magmatic evolution in the Nefza district (Northern ...

Uranium-Lead Isotopic Variations in Zircons: A Case Study

Stability of the association fayalite + calcite within metamorphosed ...

siderite — Traduction en français - TechDico

Petrological, geochemical and isotopic characteristics of the Collo ...

Iron_ore - chemeurope

Stability of the association fayalite + calcite within metamorphosed ...

Stabilité de l'association fayalite + calcite dans les formations ...

Edough-Cap de Fer Polymetallic District, Northeast ... - SpringerLink

Publications - SUERC Stable Isotope Laboratory | East Kilbride

The Richemont rhyolite dyke, Massif Central, France; a subvolcanic ...

Patyn Mt. Massif, Synzas River, Kemerovo Oblast, Russia

Iron Ore Pelletizing Process: An Overview - IntechOpen

Mining Vibrating Screen - GN Separation Equipment Manufacturer

Bernard GUY - Academia.edu

Stabilité de l'association fayalite + calcite dans les formations ...

Day2 - The 28th Colloquium of African Geology - GSAf

Characterization of Selected Mineral Ores in the Eastern Zone of Kenya ...

Did the massive magnetite "lava flows" of El Laco (Chile) form by ...

The composition and evolution of the continental crust: rare earth ...

Diamond-bearing kimberlite fields of the Siberian Craton and the Early ...

Stability of the association fayalite + calcite within metamorphosed ...

Structure des diagrammes de phases pour des systèmes chimiques à n ...

Stability of the association fayalite - NASA/ADS

Petrogenesis and Exploration of the Earth's Interior. Mineral ...

Stabilité de l'association fayalite + calcite dans les formations ...

Mineral Deposits of North Africa | springerprofessional.de

The geology and geochemistry of the Maru Banded Iron-Formation ...

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