The depth of the gully ranged between 20 and 40 m. The sedimentary strata in the area were developed, especially the Carboniferous alumina-bearing clay rock system. The bauxite occurred in the middle stratum of the Benxi Formation (C2b) of the Middle Carboniferous. The main ore body occurrence elevations ranged between 499.98 and 700.50 m.
Iran's karst bauxites are of the Mediterranean type (Ahmadnejad et al., 2017) and spatially and temporally related to four structural zones: Permian bauxites (47.6 % of Iran's total reserves) in the Sanandaj-Sirjan zone (SSZ), Permo-Triassic (19 %) to Lower Jurassic (21.8 %) bauxites in the Alborz Mountain Chain (AMC), Triassic bauxites (9.5 %) in Central Plateau of …
Bauxite deposits to the east of Shahindez, northwest Iran, formed in two distinct periods, (1) Permian and (2) Triassic-Jurassic. The Permian deposits, however, are remarkable in respect of tonnage and reserve.
The bauxite deposits of Iran can be spatially divided into four zones: (1) ... 333.12 ppm), 11.41 to 33.50 ppm (average: 23.21 ppm), and 98.6 to 1114.28 ppm (average: 356.33 ppm), ... bauxitic clayey Fe ore, bauxitic Fe ore, bauxite, and clayey bauxite. Nevertheless, the Mediterranean bauxites have the chemistry lying within the bauxites and Fe ...
Boehmite, kaolinite, hematite, pyrophyllite, anatase, calcite and diaspore are the major mineral phases. The main ore textures of the deposit include pisolitic, pisolitic-oolitic and clastic with …
References (98) A. Abedini et al. ... Iran: implications for ore genesis, rare earth elements fractionation and parental affinity. Ore Geol. Rev. (2017) M.G. Babechuk et al. ... In the Irano–Himalayan karst bauxite belt, in northwestern Iran, karst bauxite orebodies are widespread. Although several of these orebodies have been characterized ...
Gibbsite makes up to 98 vol.% of the bauxite ore in special cases. Gibbsite is accompanied by goethite in the ore. ... Mineralogical and geochemical evolution of the Bidgol bauxite deposit, Zagros Mountain Belt, Iran: Implications for ore genesis, rare earth elements fractionation and parental affinity. 2017, Ore Geology Reviews ...
In the late Triassic–early Jurassic Nasr-Abad deposit, bauxite ores are bauxitic iron ore and Fe-rich bauxite, grading into bauxite and clayey bauxite upward the succession. The ores mainly consist of a mineral assemblage of diaspore, hematite, kaolinite, and rutile.Conservative elemental ratios of provenance, such as Eu/Eu*, Sm/Nd, and Nb/Ta, suggest a derivation from …
The Kolijan bauxite deposit (southeast Mahabad, northwestern Iran) mainly contains aluminum-bearing iron ores and was deposited in karstic depressions and sinkholes of the middle Permian carbonate rocks of the Ruteh …
Mineralogical and geochemical analyses of the Dopolan karstic bauxite ore were performed to identify the characteristics of four bauxite horizons, which comprise from top to bottom, bauxitic kaolinite, diaspore-rich bauxite, clay-rich bauxite, and ... (M.N.) * Correspondence: [email protected]; Tel.: +98-713-613-7457 Academic Editor ...
The ore-forming process of bauxite is very complex, and there are enrichment phenomena of other useful elements in the ore-bearing rock series, among which the enrichment of associated Ga, Li and ...
Bauxite deposits in Iran are characterized by different geological ... Petrography and geochemistry of the Jajarm Karst bauxite ore deposit, NE Iran: implications for source rock material and ore genesis. Turk. J. Earth ... Evaporite, 30 (1) (2015), pp. 77-98. Crossref View in Scopus Google Scholar. Kamineni and Efthekhar-nezad, 1977. D.C ...
The Kolijan bauxite deposit (southeast Mahabad, northwestern Iran) mainly contains aluminum-bearing iron ores and was deposited in karstic depressions and sinkholes of the middle Permian carbonate rocks of the Ruteh Formation. Based on microscopic observations, the aluminum-bearing iron ores were allogenic in origin. According to XRD and SEM-EDS …
The Gano karst bauxite deposit is located in the eastern Alborz Mountains, 90 km NE of Semnan city, northern Iran. The layers and lenticular patches of bauxite are hosted in the Triassic karstified carbonate rocks interbedded with calcareous shale of the Elika Formation, unconformably overlain by siliciclastics of the early Jurassic Shemshak Formation.
The Arbanos bauxite deposit is located in the Iran-Himalayan karst-type bauxite belt and about 25 km northeast of Bukan city, northwestern Iran. The bauxite ores occur as layers and lenses along the contact of the carbonate (limestone and dolomite with intercalations of shale) of the Ruteh Formation (Upper Permian) and dolomite of the Elika ...
Bauxite deposits in Iran can be divided spatially and temporally into three age-groups: Permo-Triassic deposits in northwestern Iran (e.g., Calagari and Abedini, 2007); Upper Triassic to Lower Jurassic deposits in northern Iran (e.g., Rouzbeh-Kargar, 1997) and in some parts of the ⁎ Corresponding author. Tel./fax: +98 611 3369684.
Petrography and Geochemistry of the Jajarm Bauxite ore Deposit, Northeast Iran: Implications for Source Rock Material and Ore Genesis. Amir Esna-Ashari. Turkish Journal of Earth Sciences ...
In many of the previous studies, regional geological controls on the formation of bauxite ore deposits were not adequately discussed. After formation, bauxite layers can be folded, faulted, buried and altered by hydrothermal fluids, or exposed for new stages of weathering (Liu et al., 2012, Wang et al., 2011b, Zarasvandi et al., 2008). All ...
PDF | The Jajarm bauxite deposit, northeast Iran, is the largest such deposit in Iran. The deposit is sandwiched between the Triassic Elika Formation... | Find, read and cite all the research...
The Nasr-Abad karst bauxite deposit is located 12 km east of Saqqez city in Kurdistan province, NW Iran (Fig. 1).The Nasr-Abad area exposes a metamorphic–sedimentary–igneous succession that ranges in age from Precambrian to Quaternary (Fig. 2).The stratigraphically lowest rock in the Nasr-Abad area is Precambrian …
The Arbanos bauxite deposit is located in the Iran-Himalayan karst-type bauxite belt and about 25 km northeast of Bukan city, northwestern Iran. The bauxite ores occur as layers and lenses along the contact of the carbonate (limestone and dolomite with intercalations of shale) of the Ruteh Formation (Upper Permian) and dolomite of the Elika ...
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Although the samples used in the experiments had values of <5 wt.% Fe 2 O 3, worldwide samples, especially from China and Iran, tend to have larger iron oxide contents. The iron oxide impurities are removed during the clarification process, resulting in the red mud. ... typically from 47 to 98%, from bauxite and red mud samples (Reference ...
Bauxite deposits can be classified by their bedrock into two main categories. Bauxite deposits overlying carbonates are called karstic bauxites; those lying on alumosilicate rocks are named lateritic bauxites (Bárdossy, 1982, Mameli et al., 2007).Vertical change in the ore qualities in bauxite is recognized to be an important clue for understanding ore-forming process and …
The present study focuses on the Late Cretaceous Bidgol bauxite deposit in the Zagros Simply Fold Belt, SW Iran. The orebody is located in the eroded major NW–SE trending Koh-e-Hosseyn anticline and hosted as discontinuous stratified layers and lenses within the upper member of the Cenomanian–Turonian Sarvak Formation.
The Kanirash bauxite deposit belongs to the Iran-Himalayan karst-type bauxite belt, which is situated about 30 km southeast of Mahabad city, northwestern Iran. The bauxite ores are embedded by the ...
The Kolijan bauxite deposit (southeast Mahabad, northwestern Iran) mainly contains aluminum-bearing iron ores and was deposited in karstic depressions and sinkholes of the middle Permian carbonate ...
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Most of Iranian karst bauxites in the Zagros orogenic belts are low-grade, böhmitic, diasporic bauxites [14–17]. They contain 20–45 wt % Al2O3, 3–38 wt % Fe2O3, and in most cases …
In this study, parental affinity and controlling factors of elements distribution in the bauxite ores are surveyed by applying analytical mineralogy, mass and volume changes calculations (method of …
from 0.87 to 7.52 throughout the deposit so the ore grade is locally heterogeneous. Natural bauxite ore consists of aluminum hydroxide, iron oxide, titanium oxide, and reactive silica. Figure 2: Simplified geological map of the Jajarm bauxite deposit and its surrounding units.
The amount of bauxite ore production depends on the occurrence of mineral resources rich in bauxite and extractable. Saudi Arabia has the largest bauxite mines in the Middle East. Most countries in the Middle East supplement their needs by importing bauxite from other countries due to mining restrictions, variable quality of domestic mines ...
The Dopolan deposit is a Mediterranean-type bauxite located in the Zagros Fold-Thrust Zone, Iran. This deposit consists of five lithological members including iron-rich, clay-rich, oolitic, …
More than 90 percent of Iran's iron ore deposits are located in three provinces listed in Table 11, while Table 12 presents a comparison of Iran's iron ores with the rest of the world. The share of Iran in worldwide iron reserves stands at 2.7 to 3 percent, while its share in world production varies form 0.9 to 1.0 percent. Manganese.
In general, the ore-bearing rock series contains three units: lower iron-bearing claystone consisting of illite, chamosite, and goethite; middle bauxite ore dominated by diaspore, kaolinite ...
Bauxite deposits in Iran belong to the Irano–Himalayan bauxite belt, and are similar to those from the Mediterranean bauxite belt. They are spatially distributed in four structural zones, namely the Central Iranian Plateau, the Zagros Simply Folded Belt (ZSFB), the Alborz Mountains, and northwestern Iran (Fig. 1; Abedini et al., 2019a, 2019b).The mineralogy and …
Bauxite, Iran: Mineralogy, Geochemistry, and Sulfur ... Tel.: +98-713-613-7457 Academic Editor: Pablo Cubillas Received: 23 March 2017; Accepted: 31 May 2017; Published: 12 June 2017 Abstract: Mineralogical and geochemical analyses of the Dopolan karstic bauxite ore were performed to identify the characteristics of four bauxite horizons, which ...
Bauxite ores in Iran have characteristics of diasporic type with high content of aluminum and iron and low Al2O3to SiO2mass ratio. In diasporic bauxite ore processing, silicates are easily over …
Ore Geology Reviews 34 (2008) 521–532 Contents lists available at ScienceDirect Ore Geology Reviews j o u r n a l h o m e p a g e : w w w. e l s ev i e r. c o m / l o c a t e / o r e g e o r ev Karst bauxite deposits in the Zagros Mountain Belt, Iran A. Zarasvandi a,⁎, A. Charchi a, E.J.M. Carranza b, B. Alizadeh a a b Department of Geology, Shahid Chamran University, Ahvaz, Iran ...