The beneficiation methods for Ethiopian Kenticha pegmatite–spodumene ores were assessed through mineralogical and quantitative analyses with X-ray diffraction (XRD) and energy-dispersive X-ray ...
According to the pegmatites classification of Černý and Ercit (2005), the Kenticha pegmatite main ore body belongs to the LCT (Li–Cs–Ta) family and corresponds to the spodumene subtype of the rare-element class (Küster et …
Tantalite and columbite ores have been reported as containing associated primordial radionuclides, such as uranium and thorium. Ethiopia is one of the world suppliers of tantalite ore through exploitation of Kenticha mine and tantalite production by a large number of artisanal miners. For the purpose of implementing the international …
Pegmatites as ore bodies are important sources for a number of metals and industrial raw materials, particularly for the ceramic, electronic, and nuclear power industries. Simple pegmatites, dominated by alkali ± plagioclase feldspars + quartz ± biotite ± muscovite are exploited for their feldspar and mica content. Their overall size and ...
In order to understand the development of a granitic magma down-temperature to the pegmatitic stage, we may start with the simplified granite system Qz–Or–Ab–(An)–H 2 O (Sect. 20.2).Fundamental is the solubility of H 2 O in the granitic melt. The T-X diagram granite-H 2 O shown in Fig. 22.1 was experimentally determined …
1.2.1 The Pegmatites in the "Chessboard Classification Scheme of Mineral Deposits". In the following section a brief overview of pegmatitic rocks sensu lato will be given. Some examples underscore their outstanding economic importance particularly for future technologies which are in need of elements often designated with different names such …
The ore concentrates typically contain contents of between 10% to 60% Ta2O5. The Kenticha rare-element pegmatite in southern Ethiopia represents a globally important tantalum source. The mine produces around 120 t tantalum concentrate (~55% Ta2O5) annually and ranks among the biggest individual producers of tantalum ore worldwide.
Sekota Mining PLC is a privately owned minerals company developing magnetite Iron Ore project in the Northern part of Ethiopia, East Africa. Sekota is advancing a significant exploration program and feasibility …
The leaching and extraction behavior of uranium and thorium from a high-grade Ethiopian pegmatite ore in a mixture of hydrofluoric acid and sulfuric acid has been investigated. The effects of variables such as the temperature, particle size, acid concentration, and leaching time were studied. The leaching efficiency of uranium …
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1.1.1 Kenticha pegmatites ore minerals The Kenticha pegmatite deposit in Ethiopia contains tantalite and lithium minerals (lepidolite, spodumene) (Tadesse, 2001). The …
The leaching and extraction behavior of uranium and thorium from a high-grade Ethiopian pegmatite ore in a mixture of hydrofluoric acid and sulfuric acid has been investigated.
This study is aimed to investigate the optimal operational conditions for breaking down the Kenticha, Ethiopia Li-pegmatite,which contains lithium minerals, particularly spodumene. The goal is to produce high-quality spodumene concentrate by achieving the desired particle size, particle distribution, which are crucial for efficient separation during the …
This work aims to elucidate the genesis and tectonic setting of the Kenticha tantalite deposit, located in the Adola Belt, southern Ethiopia within the Arabia Nubian Shield (Fig. 1).Field work, petrographic analysis, and trace, REE and major elements analyses were carried out using Inductively Coupled Plasma Mass Spectrometry (ICP …
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Columbite-tantalite ore mineralogy from the Kenticha rare-metal granites and pegmatites, Adola (Southern Ethiopia), has been studied in detail and the results can be used as an indicator of the ...
Pegmatites are intrusive igneous rocks with very coarse-to gigantic-sized textures. What typifies the world's most famous granitic pegmatites is a combination of gigantic crystal size and extreme …
Notable NYF pegmatite deposits, as summarized by Ercit (2005), include the South Platte granite and pegmatite system in Colorado (Simmons et al. 1987), the Grötingen granite and Abborselet and other associated pegmatites in Sweden (Kjellman et al., 1999), the Lac du Bonnet biotite granite and Shatford Lake pegmatite group in Canada (Buck et al ...
The Kenticha rare-element pegmatite, a globally important tantalite source in the Neoproterozoic Adola Belt of southern Ethiopia, is a highly fractionated, huge (2,000m long and up to 100m thick ...
The reworked Pre-Neoproterozoic and juvenile Neoproterozoic terrane of the Western Ethiopian Shield (WES) consists of three N–S trending terranes.
A pegmatite ore from the Gonçalo (Portugal) lepidolite deposit was studied. The samples were collected at the mine site within the framework of the FAME project. The ore was crushed in a jaw crusher (single toggle 5′' × 6″, 4 kW, 325–375 rpm, Denver) to produce particles between 20 and 6 mm.
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Fractionation and Rare-Element Mineralization of Kenticha Pegmatite, Southern Ethiopia. Dong Hyeok Moon. The Kenticha rare-element (Ta-Li-Nb-Be) mineralized zone is …
and potentials for extraction of Nb and Ta from Ethiopian Kenticha pegmatite ore using green processes. Economic minerals of Nb and Ta The foremost source of niobium and tantalum is the columbite-tantalite mineral or "coltan", pyrochlore.7‒9 Microlite, ixiolite, wodginite). High grade Ta ore concentrates typically have 10% and
The Kenticha rare-element pegmatite, a globally important tantalite source in the Neoproterozoic Adola Belt of southern Ethiopia, is a highly fractionated, huge …
A spodumene mine is currently being developed by Nemaska Lithium on the Whabouchi pegmatite, with measured and indicated ore reserves exceeding 38 Mt grading 1.45% Li 2 O on average (Maguran et al., 2019). Zircon and monazite U-Pb dating of local pegmatites, including Whabouchi, give ages slightly under 2.6 Ga (Bynoe, 2014).
When iron ore is extracted from a mine, it must undergo several processing stages. Six steps to process iron ore. 1. Screening We recommend that you begin by screening the iron ore to separate fine particles below the crusher's CSS before the crushing stage. A static screen is used to divert the fine particles for crushing.
The beneficiation methods for Ethiopian Kenticha pegmatite–spodumene ores were assessed through mineralogical and quantitative analyses with X-ray diffraction (XRD) and energy-dispersive X-ray fluorescence (EDXRF). The tantalite in the upper zone of the Kenticha pegmatite–spodumene deposit is 58.7wt% higher than that in the inner …
The exploration work carried out by Ethiopian Mineral Resources and Development Corporation (EMRDC) in the Kenticha area estimated about 25 thousand tonnes of Ta 2 O 5 ore with 0.020–0.025 wt% grade, 0.5–1.0 million tonnes of Li-ore and 50 thousand tonnes of Be-ore (Poletayev et al., 1991).