Finger of conflict minerals: columbite-tantalite ("coltan") ores
Introduction Illegal mining of gold, diamonds, copper, cobalt and, in the last decade, "coltan" has fuelled ongoing armed conflicts and civil war in a number of African countries.
Assessment of radiological safety of abandoned …
Times[4] reported 1200 abandoned mining sites in Nigeria and these sites if radiologically safe, may be used for building companies that will employ the youth in the
2D electrical resistivity imaging of tantalite-bearing veins …
Nigeria. They found out that the cassiterite-rich zone is lying between 10 and 11.5 m. Arising from the success recorded in the above-cited studies among others, electrical …
analysis of columbite ore mined in nigeria
Nigerian mining has tremendous ... The solution methods are now being employed as techniques used for cassiterite ore analysis in Nigeria since 1990s 17 but have the disadvantage ...
HEAVY METAL CONTENTS OF ONDA TANTALITE MINING AREA, NASARAWA STATE, NIGERIA
Heavy metal contents in soil from Onda tantalite mining area were studied. Thirty and ten soil samples were collected from the mining area and control site, respectively, using a hand auger.
MINERALIZATION POTENTIALS OF PEGMATITES IN THE …
as by-products of the tantalite mining, while other pegmatite minerals like quartz, feldspar, amblygo-nite-montebrasite, cookeiteand micaarestillbeing discarded in waste dumps. Area description, methods and materials studied Regional Geology Central Nigeria is part of an Upper Proterozoic mobile belt extending from Algiers across the southern Sa-
A review on extractive metallurgy of tantalum and niobium
Pyrometallurgical processing is commonly used to convert Nb from pyrochlore into ferroniobium alloy through aluminothermic or carbothermic reduction. The hydrometallurgical methods are commonly employed to recover both Ta and Nb from colombo-tantalite (Ungerer et al., 2014). The approach consists of several sequential …
COLUMBITE ORE EXPORT IN NIGERIA « Foraminifera …
Columbite, also called niobite, niobite-tantalite and columbate [(Fe, Mn)Nb2O6], is a black mineral group that is an ore of niobium. ... Though not all the mineral occurrences will ultimately have enough reserves to be of viable interest to mining companies, the Nigerian government is leaving no stone unturned in its increasingly …
Columbite Ore Mineral Deposits in Nigeria with …
Used by mining and recycling industries for separating columbite ores. In Nigeria, West Africa, we have various exploration and mining companies that specialize in Columbite, niobium, and tantalite mining, such as . …
(PDF) Artisinal Mining of Cassiterite
Two mining clusters were reviewed to ascertain the mining methods used and the extent of environmental degradation and exposures to possible radiation by the artisanal Miners. ... Feldspar, Tantalite, Coal, etc Policies in place are inadequate, and miners are untrained and contribute hugely to environmental degradation, and poor quality ...
Assessment of artisan's exposure to heavy metals from …
tantalite ore mining sites in Oke‑Ogun, Oyo State, Nigeria Ajetunmobi Abayomi Ekundayo, Amidu Olalekan Mustapha, Itunu Comfort Okeyode, Gbadebo Adewole Michael, Al-Azmi Darwish 1
The impact of tantalite mining on the flora diversity in
affected by tantalite mining ac tivities. Hence, this study was designed to evaluate the floristic diversity in tantalite mining sites of the Nasarawa state, Nigeria. Materials and …
(PDF) Prospects of Nigerian Mineral Resources as a …
Nigerian tantalite, columbite, and tin ... The 2010 lead poisoning outbreak that claimed the lives of more than 400 children in artisanal gold mining villages in Zamfara, Nigeria is the tragic ...
2D electrical resistivity imaging of tantalite-bearing …
bodies and recommend the appropriate mining method. Tantalite is a metallic mineral. Metallic ... exploration of tantalite-rich zones in Kaiama, Nigeria. 2. Geology of the study area
MINING COMPONENTS OF THE NIGERIAN MINING …
gas mining industry remain vibrant and accounts for larger part of Nigeria's revenue generation. METHODS OF MINING The two main methods of mining are surface mining and underground mining. Surface mining: Surface mining is used to obtain minerals that are removed by blasting. It includes open pit mining, quarrying and strip mining.
Alternative beneficiation of tantalite and removal of …
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 …
rge 116 87..97 Characterization and Mineralization …
mangano-tantalite of tantalite-columbite quadrilateral diagram. These results indicate that the pegmatites are promising hosts for Nb-Ta ores. Keywords: granitic pegmatites, Komu, mangano-tantalite, mineralization, Nigeria. 1. Introduction The occurrence of rare metals in Nigeria is broadly divided into two episodes of mineralization: tin-
(PDF) Assessment Of Beneficiation Routes Of …
Abstract. The beneficiation methods for some tantalite ores from selected deposits in Nigeria have been assessed through mineralogical and compositional analyses of the ores. Tantalite ores ...
Characterization and Mineralization Potentials of Granitic …
The K/Rb ratio, Rb versus K/Rb and Sn versus K/Rb plots, among others, have been used to evaluate the mineralization potentials of pegmatites of some localities in Nigeria (Matheis, 1987; Kuster, 1990). Mining of pegmatite minerals (cassiterite and beryl) commenced in 1913 in the Egbe area, Nigeria (Matheis et al., 1979). This spread to …
mining of tantalite in nigeria
tantalite mining in nigeria - miningbmw. tantalite mining in nigeria Mining industry of Nigeria - Wikipedia, the free encyclopedia The mining of minerals in Nigeria accounts for only 0.3% of its GDP, due to the influence of its vast oil resources.
Evaluation of mining and mineral processing methods' …
Ethiopian Mineral Development Share Company is conducting open pit mining and producing about 150 tons of tantalite concentrate annually. About 500 kg concentrate with ∼50% tantalite is produced a day from 1200 tons of feed using different mineral processing techniques.
Assessment Of Beneficiation Routes Of Tantalite …
The beneficiation methods for some tantalite ores from selected deposits in Nigeria have been assessed through mineralogical and compositional analyses of the ores. Tantalite ores obtained from eight different well …
(PDF) Assessment Of Beneficiation Routes Of Tantalite Ores …
The beneficiation methods for some tantalite ores from selected deposits in Nigeria have been assessed through mineralogical and compositional analyses of the ores.
DOI: https://doi/10.55455/jmesr.2024.007 A …
rudimentary methods like hand sorting and gravity concentration. These methods were labour intensive and limited in efficiency (Ebikemefa, 2020). The recovery of tantalite in Nigeria as a by-product of cassiterite mining began in the early 1940s (Miller, 1959; Kock and Paschen, 1989; Kolawole et al., 2017). The recovered tantalite
Assessing the need for radiation protection measures in …
There is concern that work scenarios on the tantalite mining sites in Oke-Ogun, Oyo State, Nigeria may cause occupational radiation exposure of workers due to enhanced concentrations of naturally ...
The impact of tantalite mining on the flora diversity in
Abstract. The activities of the artisanals and small-scale miners in Nasarawa state, Nigeria, are increasing daily without considering the loss of biodiversity, which …
Tantalite Occurrence in Nigeria | Ministry of Mines and …
Welcome to the Integrated Automation and Interactive Solid Minerals Portal (IAISMP), the GO-TO portal for real time information on Mining Sector in Nigeria. Office:No. 2, Luanda Crescent, off Adetokunbo Ademola Crescent, Wuse II, Abuja, F.C.T., Nigeria. Call Us: +234 9 …
The impact of tantalite mining on the flora diversity in
The activities of the artisanals and small-scale miners in Nasarawa state, Nigeria, are increasing daily without considering the loss of biodiversity, which has continuously disrupted ecological functions and environmental balance. The study aimed at investigating the effect of tantalite mining acti …
Tantalite
Tantalite-Coltan Ore in Nigeria: Unraveling UNR Mining Ltd's Role in Global Supply Nigeria, with its vast and largely untapped mineral resources, has recently come into the …