Joyce Ayuba Ramadan, Mamuda Isiaka, John Pam Chongs
Dimension stone can also be defined as any rock that has been removed from its natural place of origin for ultimate use in construction or monuments where three dimensions of size together with shape and other elements of appearance, such as colour, grain texture and pattern and surface finish, are normal requirements; it is usually quarried for the purpose of obtaining blocks or slabs that meet specification of size and shape. The availability of Porphyritic Older Granites and Charnokite rocks within the study area in abundance stimulated the examination of the rock samples in various capacities to ascertain their suitability for the purpose of dimension stone quarry. The structural disposition of these rock types were observed, recorded and analysed which reveal a general orientation in the NE-SW directions concurring with the regional structural trend of the area as well as the mineral compositions. In addition, the structures were well spaced in such a way as to optimize block exploitation. Physical properties, such as strength, porosity estimation, aesthetic value test and oxidation tests were carried out on fresh samples. The results displayed satisfactory abilities to be quarried as dimension stones which could be cut, trimmed and polished for tiles and block production or even used without polish.