Beiqi Zheng

Shaoguan University | SGU

Because of the increasing price of jadeite, many fake species have appeared on the market. We recognized three pieces of fake black jadeite that had been placed among real black jadeite. In this study we conducted a mineralogical investigation of the three fakes and the real jadeite by using FTIR and XRD techniques; in addition, we performed in sit...

We conducted elements and boron isotope studies on tourmalines from a single pegmatite vein of the Altay orogen to investigate its origin and evolution. The pegmatite is composed of border, intermediate and core zones. The border and intermediate zone tourmalines mostly belong to schorl, while the core zone and magmatic hydrothermal tourmalines to...

Few studies have focused on gem-quality tourmaline acting as a petrogenetic recorder, and the colour genesis of pink elbaite is still controversial. We carry out in situ major, trace element and boron isotope composition analyses on a single tourmaline crystal. This crystal is characterized by sudden transformation from colourless to pink, which ca...

The alteration zone around pegmatites can be used as a direct tool to trace the property of pegmatite-derived fluids. In the present study, EPMA, LA-ICP-MS, and MC-ICP-MS were used to analyze major elements, trace elements and boron isotope compositions of tourmaline from Qinghe barren pegmatite, NW China. Most tourmalines from the pegmatite are sc...