This study aims to describe the triphylite (LiFe²⁺PO₄) from Li-bearing pegmatites from the Conțu-Negovanu area (Southern Carpathians, Romania). Thus, for the first time in this area, using four analytical methods, i.e., electron micro-probe analysis (EMPA), polarized optical microscopy (POM), Fourier transform infrared spectroscopy (FTIR), and powder X-ray diffraction (p-XRD), the authors have succeeded in isolating the triphylite from the isomorphous triphylite–lithiophilite series. In addition, in the Conțu-Negovanu area, two new minerals were identified and described for the first time in pegmatites from this area: Fe-rich gatehouseite and wolfeite. The use of EMPA allowed for the tentative calculation of empirical formulae for these secondary phosphate minerals.

Paulina HȊRTOPANU, Nicolae CĂLIN, & Sorin S. UDUBAȘA - NAMBULITE AND NATRONAMBULITE OCCURRENCE IN THE MANGANESE BELT, BISTRIŢA MOUNTAINS,EASTERN CARPATHIANS, ROMANIA, Carpathian Journal of Earth and Environmental Sciences February 2024, Vol. 19, No. 1, p. 89 – 102; DOI:10.26471/cjees/2024/019/281