Browsing by Author "Shakirat Oluwarantimi Mustapha"

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    Evaluation of Geotourism Potential of Eruku and its Environs: A Case for Ilado Hill
    (SciPress Ltd, Switzerland, 2021-04-21) Olufemi S. Bamigboye; Toba Emmanuel Bamidele; Shakirat Oluwarantimi Mustapha; Olufemi Olaniyan; Moses Oluyemi Awojobi
    Geotourism potential of Eruku and its environs with emphasis on Ilado hill was appraised.The methods adopted in this work includes geological field mapping and interview. From the field mapping exercise, the rocks in Eruku and its environs include migmatite, gneisses, amphibolite granites, diorite and pegmatite. The tourist attractions include remnant of ancient city wall (Odi Ilu), joining wall (Odi Abumo) and Ilado hill. Ilado hill was also discovered to be an abandoned ancient city with city gate made of gold with full regalia of African administrative offices. The conclusion drawn from this work is that Ilado hill fulfilled all the requirements to be a tourist destination, and hence, it is a good source of recreation while also serving as source of income for the Eruku City and government at large.
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    Mineralogy, Geochemistry and Economic Potentials of Pegmatites around Egbe-Ejiba-Isanlu, Isanlu Sheet 225 Southwestern, Nigeria
    (Journal of Mining and Geology, 2022) Jimoh Ajadi; Abdulrasaq Olawale Busari; Abdulwasiu Sunday Babatunde; Fatimah Bukola Toyin; Razak Onawole Jimoh; Shakirat Oluwarantimi Mustapha; Taofeeq Ayinde Issa
    This study focused on the geochemistry and economic potentials of the rare metal mineralization within the pegmatites of the Egbe-Ejiba-Isanlu areas using geological, geophysical, and geochemical techniques. From a total of 92 fresh rock samples collected, 40 were cut into thin sections for petrographic studies, 20 cut and polished for ore microscopic studies while 30 were analysed for elemental composition of major oxides and trace elements, using XRF and ICPMS techniques respectively. Petrographic study shows that the area is underlain by Biotite Gneiss, Migmatitic Gneiss, Augen Gneiss, Banded Iron Formation (BIF), Quartzite, Quartz-mica Schist, Porphyritic Granites, Coarse-grained Granite, Quartz Diorite and Pegmatite. Structural data shows a dominant NNE-SSW trending lineaments with minor complimentary NNW-SSE trends. The Total Magnetic Intensity and Reduce to Equator images from aeromagnetic anomaly data were used to enhance existing inferred geological boundaries of adjoining lithological units. The Total Magnetic Intensity map (TMI) depicts magnetic anomaly values that ranges between 52.5- 85.2. The map also shows prominent high magnetic anomaly (71.5nT- 84.0nT) in rocks of the eastern part of the area. The molecular plot of Al₃O₂/CaO+Na₂O₃+K₂O versus SiO₂ reveals that the pegmatites have I-type characteristics. The K/Rb vs Cs discrimination diagram indicates that the pegmatites of the Egbe, Omi, Takete and Idofin areas are of the mineralized type. The geochemistry of some selected pegmatite samples shows enriched concentration values in ppm of 716.10, 19.68, 37.40, 92.00 and 481.70 for Rb, Cs, Ta, Sn and Nb respectively. These suggests that the pegmatites are rare metal type with enrichment trend of Rb>Nb>Sn>Ta>Cs, with strong negative Eu anomalies, suggesting that the pegmatites are of LCT-type. Ore microscopic studies show that the pegmatites are associated with tantalite, pyrite, chalcopyrite, tourmaline, and galena ores of economic values as evidenced in the high level of artisanal mining activities in the areas. Keywords: rare metal, pegmatite, enrichment, anomaly, artisanal mining