LI Shuhui ¹, BAO Haoming ¹, LIANG Zuobin ¹, TIAN Gang ¹, WANG Feng ¹, SHAO Weiquan ¹, CHEN Sha'ou¹, JIA Xiaotian ²

(1. College of Physics Science, Qingdao University, Qingdao, Shandong 266071; 2. Gansu Industrial Technology Research

Institute, Lanzhou, Gansu 730030)

Abstract: In this paper, the phase composition and chemical composition of the quartz sand from Gansu region were studied by using X-ray diffraction (XRD) technique and X-ray fluorescence (XRF) analysis. Employing the analytic Jade software of X-ray diffraction data, the phase analysis was conducted. The mass percentages of the main phases were calculated by the adiabatic method for the quartz samples, and compared with the XRF data. The results showed that the main phases of the two samples were quartz (α-SiO₂), Albite (Na(Si₃Al)O₈), potassium feldspar (KAlSi₃O₈) and gismondine (Ca₂Al₂Si₂O₈·4H₂O).

Key words: quartz; plagioclase; gismondine; X-ray diffraction analysis; X-ray fluorescence analysis