{"title":"Morphological features of quartz dissolved in Humic acid","authors":"A. Ali, M. Kwaya","doi":"10.5455/SF.18584","DOIUrl":"https://doi.org/10.5455/SF.18584","url":null,"abstract":"Quartz dissolution plays a significant role in controlling the concentration of silica in hydrothermal systems, thus providing controls on natural waters and artificial systems. However, the kinetics of quartz dissolution, particularly in humic acid, is yet to be clearly elucidated, because of the varying explanations proffered in different studies. Therefore, this study reviews the empirical quartz dissolution models to present a unified approach. In addition, quartz grains were dissolved in humic acid and then characterized using scanning electron microscopy and Fourier Transform Infrared (FTIR). The review postulates that dissolution mechanism of the quartz in acidic solutions involves the reaction of the metal atoms with water to form solvated cations, and subsequent reaction of the silicate groups with H+ to form hydrated anions. Thus, quartz surface is intensely etched after dissolution to form varying degrees of deep etch pits and flat overlapping crystal faces. Concomitant with the quartz dissolution is the adsorption of humic acid onto the quartz surface via hydrogen-bond interaction. Fibrous and wiry structures as well as platelets of the humic acid molecules accumulating in the etch and dissolution pits and plaster the quartz surface. Therefore, in addition to mineral dissolution, humic acid serves as organic binders in siliciclastics. This study posits the dissolution of quartz in humic acid creates surface defects such as etch pits and leads to associated adsorption of humic acid molecules on the quartz surface via hydrogen-bond interaction.","PeriodicalId":128977,"journal":{"name":"Science Forum (Journal of Pure and Applied Sciences)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134545488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"INFLUENCE OF REGIONAL TRANSCURRENT FAULT SYSTEMS ON MINERALIZATION IN THE NIGERIA PAN-AFRICAN PROVINCE","authors":"N. Abdulmalik, H. Grema, A.F.M. Umaru","doi":"10.5455/sf.120155","DOIUrl":"https://doi.org/10.5455/sf.120155","url":null,"abstract":"","PeriodicalId":128977,"journal":{"name":"Science Forum (Journal of Pure and Applied Sciences)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132098404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Morphological classification and Mineral Potential of Migmatites in Zongor area, north eastern Nigeria based on Geology and Petrographic Studies.","authors":"Bridget Oshilike, A. Haruna, N. Muhammad, A. Isa","doi":"10.5455/sf.73787","DOIUrl":"https://doi.org/10.5455/sf.73787","url":null,"abstract":"This study examines the different morphologies of migmatites in the Zongor area, north eastern Nigeria, based on field and petrological evidences. Field relationship exposes rocks around the Zongor area as dominated by a complex suite of migmatites that have undergone different stages of metamorphism. In some parts of the area, structures such as layering and foliation are seen to have been preserved during partial melting, whereas in other parts, these structures appear to have been completely consumed during anatexis to form new structures. This discrepancy in the field occurrence of migmatites in the area, in line with recent development in studies on migmatites has shed more insight into the classification of the migmatites in the study area. Rock samples from the field are sorted into groups. Representative rock samples from these groups are studied under thin section. The occurrence of high temperature minerals like garnet, orthopyroxene, plagioclases, olivine, and hornblende are indicative of high-grade metamorphism. Results from field and petrographic studies are compared with results from the works . Using his first- and second-order classification scheme as a guide for the morphological classification of the migmatites in the area, the migmatites are grouped into metatexite and diatexites. The geologic conditions and mode of occurrence of the migmatites in the Zongor area are studied in order to understand the tectonic history of the area and its implication for mineral occurrence.","PeriodicalId":128977,"journal":{"name":"Science Forum (Journal of Pure and Applied Sciences)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114080227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Bishir Abubakar, S. Maibulangu, Ehiosasu Idusuyi, R. Madaki, Ismail Aliyu, Hasheem Bello, Sani Ahmed
{"title":"AN ECONOMETRIC ANALYSIS ON REVENUE AND EXPENDITURE\u0000(A CASE STUDY OF BAUCHI STATE INTERNAL REVENUE SERVICE)","authors":"Bishir Abubakar, S. Maibulangu, Ehiosasu Idusuyi, R. Madaki, Ismail Aliyu, Hasheem Bello, Sani Ahmed","doi":"10.5455/sf.abbakori3","DOIUrl":"https://doi.org/10.5455/sf.abbakori3","url":null,"abstract":"","PeriodicalId":128977,"journal":{"name":"Science Forum (Journal of Pure and Applied Sciences)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115096873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}