Clear investigation on mineral rock characterization is essential for establishing solid bridges between the mineral resource location and area of application, i.e. rock provenance. Major scientific revolutions in the industry was made possible via technologies of characterization (XRD, XRF, SEM etc..,) providing improved processing routes that effectively address arising challenges and problems faced by our local quarries and mining industries, therefore attempting also to explaining fundamental treatment techniques that were adopted anciently. Modern civil engineering activities, mining and construction entail clear statistical data on material composition, texture, petrographic and mechanical properties of the source material or mineral ore they are handling for clear documentation. Visual inspection was carried out on Diorite samples acquired from various locations. Microscopic examination of component were classified in order to rationalize unique and recognizable features (mineral type, structure and color patterns), and estimations for specific purpose the rock is suited for (i.e., as a sculpting material or fabrication tool). Characterization therefore, provided crucial information to the interpretation on quality of stone and relevant processing factors relating to energy input and effective processing technique. In this work, Insitu X – ray powder diffraction analysis was performed at rtp conditions on powdered samples of Diorite (a) and (b). Various components were identified which revealed that phase composition is significant in determining the strength of material and processing parameters.