Mineralogical Characteristics Study of Calcite from the Fujian Province, China

Abstract

With mineral in situ testing technology and ore deposit geochemistry development, calcite has become a hot topic in studying carbonate minerals. Four large-grain calcite crystals from Fujian, China, were used for a detailed study. This study provides a comprehensive data set through mineralogical standard properties and spectral characteristics, including Fourier transform infrared, X-ray fluorescence spectrum, and Raman spectroscopy. Major elements were analyzed using X-ray fluorescence (XRF) and Micro-XRF. A high-resolution gas-source stable isotope ratio mass spectrometer was used to test C-O isotope characteristics. The four samples’ spectral characteristics and phase composition show excellent uniformity, all with the same characteristic peaks, indicating that they are pure calcite without other impurity minerals. C-O isotope characteristics indicate that Fujian calcite has mantle genetic characteristics, which may be affected by marine carbonate dissolution or sedimentary rock contamination. The variation of Fe and Mn contents may indicate that the four samples formed at different metallogenic stages.