Samuel Nunoo | University of Johannesburg, South Africa (original) (raw)
Papers by Samuel Nunoo
Applied Earth Science
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Heliyon
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Groundwater for Sustainable Development
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Journal of Sedimentary Environments
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Heliyon
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International Journal of Basic and Applied Sciences, 2018
Golden Star Resources Limited conducts Bulk Leach Extractable Gold (BLEG) and Fire Assay methods ... more Golden Star Resources Limited conducts Bulk Leach Extractable Gold (BLEG) and Fire Assay methods on samples from its exploration program. Additionally, for mining control and as part of the sampling and analytical protocol, residues of samples whose assay values are greater than 10 g/t are subjected to fire assay to determine the quantity of gold. However, there is gold retained in the tails or residue after leaching and to verify the suitability and efficiency of the analytical method, drill samples (RC and DD) with control samples were analysed using BLEG method based on the accelerated cyanide leach extraction and Fire Assay method on the tails.Percentages of the prepared samples were subjected to BLEG orientation study to investigate the leachability and efficiency of the BLEG method on the ore samples. Fire Assay analysis was also carried out on the selected tailing samples to find out the assay reproducibility of the samples. The analytical analyses carried out on the samples ...
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Natural Hazards, 2015
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Marine and Petroleum Geology
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Journal of African Earth Sciences, 2016
Abstract The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian ... more Abstract The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti belt of southwest Ghana. The prospect is approximately 45 km 2 and is underlain by basalt, andesite and dacite volcanic beds, graphitic and chlorite phyllites of sedimentary origin and granites. Published works on the Obuom geological terrane, using gravity models, showed that, the structures are more complex than previously thought and may involve multiple thrust slices. This research identified two deformational episodes; the first has a remarkable sinistral sense probably synchronous with an Eoeburnean event with the second, an overprint of dextral shearing during the Eburnean event. The first episode, Do 1 is characterized by NW-SE compression which resulted in subvertical NE-SW trending S 1 axial plane metamorphic foliation in tight to isoclinal F 1 folds with NW-SE trending L 1 lineations. The second episode, Do 2 indicates continuous shortening which produced nearly upright F 2 folds with east-west striking axial planes, slight plunging hinges and associated subparallel crenulation cleavages. The first deformational event Do 1 which represent NW-SE compression is observed affecting only the Sefwi Group. The Do 2 resulting from N-S compression affected both the Sefwi and Kumasi Groups.
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Journal of African Earth Sciences
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Journal of Radioanalytical and Nuclear Chemistry
Natural radioactivity, radon exhalation and rock properties have been studied using gamma spectro... more Natural radioactivity, radon exhalation and rock properties have been studied using gamma spectrometry, CR-39 detectors and weighing methods. Statistical tool was used to study the relationship between the activity concentration and properties associated with the rocks. The purpose is to determine the rocks with good properties and lower radioactivity levels in order to reduce radiological effect when used as building materials. Gneiss recorded good properties while quartzite was found to contain poor and lower value of radiological parameters as compared to granite and sandstone. Radon-222 was found to correlate well with the properties than radionuclides of radium-226, thorium-232 and potassium-40.
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Journal of African Earth Sciences
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The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti b... more The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti belt of southwest Ghana. The prospect is approximately 45 km 2 and is underlain by basalt, andesite and dacite volcanic beds, graphitic and chlorite phyllites of sedimentary origin and granites. Published works on the Obuom geological terrane, using gravity models, showed that, the structures are more complex than previously thought and may involve multiple thrust slices. This research identified two deformational episodes; the first has a remarkable sinistral sense probably synchronous with an Eoeburnean event with the second, an overprint of dextral shearing during the Eburnean event. The first episode, Do 1 is characterized by NW-SE compression which resulted in subvertical NE-SW trending S 1 axial plane meta-morphic foliation in tight to isoclinal F 1 folds with NW-SE trending L 1 lineations. The second episode, Do 2 indicates continuous shortening which produced nearly upright F 2 folds with east-west striking axial planes, slight plunging hinges and associated subparallel crenulation cleavages. The first deformational event Do 1 which represent NW-SE compression is observed affecting only the Sefwi Group. The Do 2 resulting from N-S compression affected both the Sefwi and Kumasi Groups.
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Applied Earth Science
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Heliyon
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Groundwater for Sustainable Development
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Journal of Sedimentary Environments
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Heliyon
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International Journal of Basic and Applied Sciences, 2018
Golden Star Resources Limited conducts Bulk Leach Extractable Gold (BLEG) and Fire Assay methods ... more Golden Star Resources Limited conducts Bulk Leach Extractable Gold (BLEG) and Fire Assay methods on samples from its exploration program. Additionally, for mining control and as part of the sampling and analytical protocol, residues of samples whose assay values are greater than 10 g/t are subjected to fire assay to determine the quantity of gold. However, there is gold retained in the tails or residue after leaching and to verify the suitability and efficiency of the analytical method, drill samples (RC and DD) with control samples were analysed using BLEG method based on the accelerated cyanide leach extraction and Fire Assay method on the tails.Percentages of the prepared samples were subjected to BLEG orientation study to investigate the leachability and efficiency of the BLEG method on the ore samples. Fire Assay analysis was also carried out on the selected tailing samples to find out the assay reproducibility of the samples. The analytical analyses carried out on the samples ...
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Natural Hazards, 2015
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Marine and Petroleum Geology
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Journal of African Earth Sciences, 2016
Abstract The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian ... more Abstract The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti belt of southwest Ghana. The prospect is approximately 45 km 2 and is underlain by basalt, andesite and dacite volcanic beds, graphitic and chlorite phyllites of sedimentary origin and granites. Published works on the Obuom geological terrane, using gravity models, showed that, the structures are more complex than previously thought and may involve multiple thrust slices. This research identified two deformational episodes; the first has a remarkable sinistral sense probably synchronous with an Eoeburnean event with the second, an overprint of dextral shearing during the Eburnean event. The first episode, Do 1 is characterized by NW-SE compression which resulted in subvertical NE-SW trending S 1 axial plane metamorphic foliation in tight to isoclinal F 1 folds with NW-SE trending L 1 lineations. The second episode, Do 2 indicates continuous shortening which produced nearly upright F 2 folds with east-west striking axial planes, slight plunging hinges and associated subparallel crenulation cleavages. The first deformational event Do 1 which represent NW-SE compression is observed affecting only the Sefwi Group. The Do 2 resulting from N-S compression affected both the Sefwi and Kumasi Groups.
Bookmarks Related papers MentionsView impact
Journal of African Earth Sciences
Bookmarks Related papers MentionsView impact
Journal of Radioanalytical and Nuclear Chemistry
Natural radioactivity, radon exhalation and rock properties have been studied using gamma spectro... more Natural radioactivity, radon exhalation and rock properties have been studied using gamma spectrometry, CR-39 detectors and weighing methods. Statistical tool was used to study the relationship between the activity concentration and properties associated with the rocks. The purpose is to determine the rocks with good properties and lower radioactivity levels in order to reduce radiological effect when used as building materials. Gneiss recorded good properties while quartzite was found to contain poor and lower value of radiological parameters as compared to granite and sandstone. Radon-222 was found to correlate well with the properties than radionuclides of radium-226, thorium-232 and potassium-40.
Bookmarks Related papers MentionsView impact
Journal of African Earth Sciences
Bookmarks Related papers MentionsView impact
The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti b... more The Obuom Gold Prospect is located in the central part of the Paleoproterozoic Birimian Ashanti belt of southwest Ghana. The prospect is approximately 45 km 2 and is underlain by basalt, andesite and dacite volcanic beds, graphitic and chlorite phyllites of sedimentary origin and granites. Published works on the Obuom geological terrane, using gravity models, showed that, the structures are more complex than previously thought and may involve multiple thrust slices. This research identified two deformational episodes; the first has a remarkable sinistral sense probably synchronous with an Eoeburnean event with the second, an overprint of dextral shearing during the Eburnean event. The first episode, Do 1 is characterized by NW-SE compression which resulted in subvertical NE-SW trending S 1 axial plane meta-morphic foliation in tight to isoclinal F 1 folds with NW-SE trending L 1 lineations. The second episode, Do 2 indicates continuous shortening which produced nearly upright F 2 folds with east-west striking axial planes, slight plunging hinges and associated subparallel crenulation cleavages. The first deformational event Do 1 which represent NW-SE compression is observed affecting only the Sefwi Group. The Do 2 resulting from N-S compression affected both the Sefwi and Kumasi Groups.
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