@article{MAKHILLRJAS201813510095,
    title = {Evaluation of Major and Trace Elements of Orin-Ekiti Bauxitic Clay},
    journal = {Research Journal of Applied Sciences},
    volume = {13},
    number = {5},
    pages = {306-312},
    year = {2018},
    issn = {1815-932x},
    doi = {rjasci.2018.306.312},
    url = {https://makhillpublications.co/view-article.php?issn=1815-932x&doi=rjasci.2018.306.312},
    author = {A.O.,R.O.,A.O.,O.L.,O.F.,O.A. and},
    keywords = {Bauxitic clay,mobile elements,trace elements,lateritization,ternary plot,Al-ore beneficiation},
    abstract = {Bauxite is the main ore from which aluminum can be extracted economically. The major and trace
elements of Orin-Ekiti bauxitic clay were evaluated to ascertain its degree of lateralization, provenance and
suitability for industrial application. Twelve samples were collected and subjected to analysis employing
ICP-MS (Agilent 7700). Results of the analysis revealed that the bauxitic clay composed mainly of
Al<sub>2</sub> O<sub>3</sub> (25.57-34.19 wt.%), SiO2 (31.19-47.71 wt.%), F<sub>2</sub> O<sub>3</sub> (1.26-23.23 wt.%) and TiO<sub>2</sub> (0.18-4.33 wt.%) with LOI   
between 13.61 and 24.71 wt.%. Alkalis and alkali earth elements showed low values probably because they have
been leached out during chemical weathering. The oxides concentrations revealed poor grade deposit when
compared to the standard bauxite chemical composition (Al<sub>2</sub> O<sub>3</sub> &gt;45%, F<sub>2</sub> O<sub>3</sub> &lt;20% and SiO<sub>2</sub> &lt;5%) which is 2 
economically mineable. Among the trace elements, Ba has the highest concentration (ppm) ranging from
559.77-3389.67 followed by Sr 169.63-1327.38 and Zr between 49.32 and 1334.17. Vanadium and Ce
concentrations (ppm) ranged from 9.19- 419.48 and 49.60-1334.17, respectively. All other trace elements have
concentrations &lt;100 ppm. The ternary plot of Al<sub>2</sub> O<sub>3</sub> -F<sub>2</sub> O<sub>3</sub> -SiO<sub>2</sub> revealed moderate lateralization with 75 and 
25% of the samples representing bauxitic clay and silica, respectively. The binary Cr/Ni plot indicated that the
bauxitic clay was of heterogeneous sources most likely from basic igneous and sedimentary rock. Orin bauxitic
clay is not suitable for Al-ore beneficiation but could found uses in the production of refractory works, alum
and fertilizers production.}
    }