ISSN 1119-4618
 

Original Research 


Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria

Vandi Dlama Kamaunji, Ntekim Eyo Eyo, Hafizullah Abba Ahmed.

Abstract
The High-K calc-alkaline granitoids in southern part of Hawal massif is an integral part of the well-exposed syn-to post collisional plutons in eastern Nigeria. The evolution of the rocks can be linked to the thermo-tectonic period of faulting, uplift, cooling, fractionation and high-level magmatism, which led to the intrusion of the granites and related rocks during the Palaeoproterozoic, about 580 10 Ma. A total of nine granitic rocks, constituting seven biotite granites of varying grain sizes and two porphyritic granites were sampled in Mubi area to shed new light regarding their petrochemistry. Detailed field and laboratory investigations show that the area is characterized majorly by Pan African granitoids. The massif has S-type strongly peraluminous geochemical signature, high-K calc-alkaline, magnesian, granodiorite, exemplified by high ASI (averagely 0.81 to 1.59), low Na2O (average 2.09 wt. %), and CaO (average 2.37 wt. %). Moreso, they exhibit low FeOt/(FeOt + MgO) ratios (0.64 0.80 wt%), low to moderate Na2O+K2O-CaO ratio (2.41 5.41 wt%), high Na2O+K2O (average 6.42 wt%) and K2O/Na2O ratios (average 2.11 wt%), as well as high Mg# (30.49 50.22), low molar CaO/(MgO + FeOt) (0.19 0.63 wt%) and molar Al2O3/(MgO +FeOt) ratio (2.10 4.31 wt%). Discrimination diagram shows that the granitoids are products of sedimentary protolith (metagreywacke) formed within a syn-collision and supra-crustal setting. The constituent mineral assemblages in the granitoids (quartz, plagioclase, alkali feldspar, biotite, hornblende, titanite, iron oxides) from the northern Hawal massif are obviously related to the condition of evolution and compositions of the protolith.

Key words: Calc-alkaline, S-type, Granitoids, Hawal Massif, Mubi, Nigeria


 
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How to Cite this Article
Pubmed Style

Kamaunji VD, Eyo NE, Ahmed HA, . Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. JPAS. 2019; 16(1): 18-42. doi:10.5455/sf.19691


Web Style

Kamaunji VD, Eyo NE, Ahmed HA, . Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. http://www.atbuscienceforum.com/?mno=19691 [Access: October 16, 2019]. doi:10.5455/sf.19691


AMA (American Medical Association) Style

Kamaunji VD, Eyo NE, Ahmed HA, . Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. JPAS. 2019; 16(1): 18-42. doi:10.5455/sf.19691



Vancouver/ICMJE Style

Kamaunji VD, Eyo NE, Ahmed HA, . Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. JPAS. (2019), [cited October 16, 2019]; 16(1): 18-42. doi:10.5455/sf.19691



Harvard Style

Kamaunji, V. D., Eyo, . N. E., Ahmed, . H. A. & (2019) Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. JPAS, 16 (1), 18-42. doi:10.5455/sf.19691



Turabian Style

Kamaunji, Vandi Dlama, Ntekim Eyo Eyo, Hafizullah Abba Ahmed, and . 2019. Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. Science Forum (Journal of Pure and Applied Sciences), 16 (1), 18-42. doi:10.5455/sf.19691



Chicago Style

Kamaunji, Vandi Dlama, Ntekim Eyo Eyo, Hafizullah Abba Ahmed, and . "Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria." Science Forum (Journal of Pure and Applied Sciences) 16 (2019), 18-42. doi:10.5455/sf.19691



MLA (The Modern Language Association) Style

Kamaunji, Vandi Dlama, Ntekim Eyo Eyo, Hafizullah Abba Ahmed, and . "Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria." Science Forum (Journal of Pure and Applied Sciences) 16.1 (2019), 18-42. Print. doi:10.5455/sf.19691



APA (American Psychological Association) Style

Kamaunji, V. D., Eyo, . N. E., Ahmed, . H. A. & (2019) Petrochemistry and Manganese Mineralization Potentials of the Calc-alkaline Granitoids from Northeastern Hawal Massif, North-Eastern Nigeria. Science Forum (Journal of Pure and Applied Sciences), 16 (1), 18-42. doi:10.5455/sf.19691