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Keywords = wolfeite

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24 pages, 20538 KB  
Article
Data of Lithium from Triphylite LiFe2+PO4 Present in Conțu-Negovanu Pegmatites, in the Southern Carpathians, Romania
by Nicolae Călin, Ciprian Constantina, Diana Perșa, Valentina Cetean and Valentin Paraschiv
Minerals 2025, 15(6), 641; https://doi.org/10.3390/min15060641 - 12 Jun 2025
Cited by 1 | Viewed by 668
Abstract
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), [...] Read more.
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. Full article
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