Application of High-Resolution X-ray Diffractometry in Measurements of Residual Stress and Strain Rate on Deformed Quartz from Malanjkhand Copper Deposit, India

1 DOI: 10.37398/JSR.2022.660101 Abstract:The Malanjkhand copper deposit is formed due to hydrothermal processes by scavenging metals from the surrounding granitoids. Present study is based on the field observations, quartz recrystallization texture, ore petrography and stress-strain measurements using High-Resolution X-ray Diffractometry (HRXRD) techniques. Field investigation and quartz recrystallization texture suggest that extensively deformed quartz reef has under gone multiple episodes of tectonic activitiesthat experienced external stress between 12 MPa to 386 MPa in the shallow crustal level. Inhomogeneous strain localization with variable magnitude measured on the quartz samples from the Malanjkhand, up to 2×10με was recorded along 45 to 75 from normal to the strike of the quartz reef due to external stress. The measured strain-rates in the quartz reef have higher values than the geological strain-rates within the range 1.78×10 s at 250 C to 1.74×10s at 400C. The long-term crustal scale multiple episodes of tectonic events that lead to the development of CIS also show their imprint on the ore bearing quartz reef that results ingrowth of the arcuate shape at the Malanjkhand copper deposit.