Mineralogical and geochemical evolution of the Bidgol bauxite deposit, Zagros Mountain Belt, Iran: Implications for ore genesis, rare earth elements fractionation and parental affinity

Ahmadnejad, Farhad; Zamanian, Hassan; Taghipour, Batoul; Zarasvandi, Alireza; Buccione, Roberto; Ellahi, Somayeh Salamab

doi:10.1016/j.oregeorev.2017.04.006

Cited by 65 publications

(16 citation statements)

References 120 publications

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“…The 4 ]. It is revealed from these patterns that in general the crystalline phases identified differ marginally between the different size fractions.…”

Section: Characterization Of Bauxite Orementioning

confidence: 99%

“…Bauxite deposits belong to two major types, namely the lateritic-type which account for 88% and the karst-type deposits which account for 12% of the world reserves. Lateritic-type are generally residual deposits derived from primary aluminosilicate rocks, while karst-type deposits are associated with carbonate rocks, where the bauxite body fills former karst cavities [3][4][5]. Karst-type deposits have different mineralogical composition compared to lateritic-type due to the presence of carbonates in the parent rock and the different weathering conditions [6].…”

Section: Introductionmentioning

confidence: 99%

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Grinding Behavior and Potential Beneficiation Options of Bauxite Ores

2020

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This laboratory study investigates selective grinding and beneficiation options for a Greek bauxite ore. First, a series of batch grinding tests were carried out in order to investigate the grinding behavior of the ore and the effect of the material filling volume (fc) on the distribution of aluminium- and iron-containing phases. Then, the ground ore was subjected to magnetic separation either as received or after reduction roasting in order to further explore potential beneficiation options. The results showed that grinding of the ore exhibits non-first order behavior, while the breakage rate varies with grinding time. Additionally, Al2O3 tends to concentrate in the coarser than 0.300 mm product fraction, while fc 10% and 2 min of grinding time are considered optimum conditions for good distribution of Al2O3 and Fe2O3. When different product fractions were subjected to magnetic separation, it was seen that the non-magnetic product obtained from the 0.300–1.18 mm fraction was more rich in Al2O3. In this fraction, the Al2O3 content increased from 58 wt% in the feed to 67.9 wt%, whereas the Fe2O3 content decreased from 22.4 wt% in the feed to 13.5 wt%. When the ore was subjected to a two-step treatment, involving reduction roasting followed by magnetic separation, the Fe2O3 grade decreased from 20.8 to 5.1 wt%, but in this case the recovery was very low.

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“…The 4 ]. It is revealed from these patterns that in general the crystalline phases identified differ marginally between the different size fractions.…”

Section: Characterization Of Bauxite Orementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Grinding Behavior and Potential Beneficiation Options of Bauxite Ores

2020

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“…Furthermore, many bauxite ore deposits with mainly boehmite and/or diaspore composition dif fers from Grebnik's bauxite ore deposits either by: a). lack or minor of boehmite component (BÁRDOSSY, 1982;TEMUR & KANSUN, 2006;GAMALETSOS et al, 2007;ESMAEILY, 2010;LIU et al, 2010LIU et al, , 2012LIU et al, and 2017MOLLAI, 2011;AHMADNEJAD et al, 2017); b). lack or minor of diaspore component (BÁRDOSSY, 1982;MONGELLI et al, 2017); c).…”

Section: Comparison With Some Other Bauxite Ore Depositsmentioning

confidence: 99%

Mineralogical and crystallographic characteristics of bauxites from some Grebnik’s (Metohija, Serbia) ore deposits

Cvetković¹,

Tančić²

2019

Geol An Balk Poluos

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Five typical bauxite samples from three ore deposits from the wider area of Grebnik Mt. (Metohija, Serbia) were examined with the optical microscopic, X-ray powder diffraction (XRPD) and chemical methods. The occurrences in bauxites were studied and described and the presence of major minerals was determined: diaspore, boehmite and hematite; minor minerals: quartz, goethite, rutile, kaolinite and hydro-hematite; as well as anatase, brookite, magnetite and chromite, which occur only sporadically. According to the quantity of main Al-bearers, three types of bauxite ore were recognized: diaspore, boehmite and boehmite-diaspore. Unit cell dimensions of major minerals were determined, mostly with values within reference data. However, all of the studied hematites have smaller a 0 and V 0 values, most probably due to the substitution of Fe 3+ by Al 3+. All samples are further classi ied as iron-rich and ferritic bauxites. It was found that there were changes in origin conditions between major Al-hydroxides minerals and hematite, as well as between the diaspore and boehmite. Determined chemical compositions put this raw material into high-quality raw materials for obtaining the electro corundum and alumina. The synthesis of the obtained data indicate that Grebnik's bauxites have some unique characteristics, more or less different from most of the World's known bauxite ore deposits.

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“…, Ahmadnejad et al . ). However, a key concern in obtaining reliable trace element mass fractions by solution ICP‐MS is the difficulty in achieving complete digestion of the bauxite, as it often contains refractory minerals such as zircon, anatase/rutile, monazite, xenotime, titanite, thorite and tourmaline (Bárdossy and Aleva , Horbe and Da Costa , da Costa et al .…”

mentioning

confidence: 97%

“…Trace element contents in bauxites have been determined by a variety of methods including instrumental neutron activation analysis (INAA) (Vukoti c 1983, Korotev 1996, Grant et al 2005), X-ray fluorescence spectrometry (XRF) (Mordberg et al 2001) and inductively coupled plasma-atomic emission spectrometry (ICP-AES) (Boulang e andColin 1994, Ochsenk€ uhn-Petropoulou et al 1990). In recent years, inductively coupled plasma-mass spectrometry (ICP-MS) has become the technique of choice because it allows the determination of a comprehensive set of elements that includes transition metals, high field-strength elements (HFSE) and rare earth elements (REE) at low mass fractions (e.g., Horbe and Anand 2011, Gu et al 2013, Wang et al 2013, da Costa et al 2014, Mongelli et al 2014, Ahmadnejad et al 2017). However, a key concern in obtaining reliable trace element mass fractions by solution ICP-MS is the difficulty in achieving complete digestion of the bauxite, as it often contains refractory minerals such as zircon, anatase/rutile, monazite, xenotime, titanite, thorite and tourmaline (B ardossy and Aleva 1990, Horbe and Da Costa 1999, da Costa et al 2014, Monsels and Van Bergen 2017a.…”

mentioning

confidence: 99%

Determination of Trace Elements in Bauxite Using Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry on Lithium Borate Glass Beads

Monsels

Bergen

Mason

2018

Geostandard Geoanalytic Res

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Quantification of trace element contents in bauxite by solution ICP‐MS and other analytical methods that rely on conventional dissolution techniques can be challenging, because the refractory nature of common host minerals complicates complete digestion. Fusion with lithium borate, frequently used as a sample preparation method for XRF analysis of solid materials, avoids these problems. This manuscript documents that subsequent analysis of the low‐dilution glass beads by laser ablation ICP‐MS is a fast, accurate and precise method for determining trace element mass fractions in samples of bauxite and similar natural materials. The method was validated by determining thirty trace elements, including thirteen rare earth elements, in international reference materials for bauxite (ANRT BX‐N, NIST SRM 69b, NIST SRM 696, NIST SRM 698) and iron formations (CCRMP FeR‐2). Trace elements were typically measured to within 20% of reference values with an ‘external’ precision of < 20% RSD. Measurement results from various deposits in Suriname illustrate the procedure's effectiveness for studies concerning chemical properties and origin of bauxite.

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Mineralogical and geochemical evolution of the Bidgol bauxite deposit, Zagros Mountain Belt, Iran: Implications for ore genesis, rare earth elements fractionation and parental affinity

Cited by 65 publications

References 120 publications

Grinding Behavior and Potential Beneficiation Options of Bauxite Ores

Grinding Behavior and Potential Beneficiation Options of Bauxite Ores

Mineralogical and crystallographic characteristics of bauxites from some Grebnik’s (Metohija, Serbia) ore deposits

Determination of Trace Elements in Bauxite Using Laser Ablation‐Inductively Coupled Plasma‐Mass Spectrometry on Lithium Borate Glass Beads

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