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MINERAL FOTO ATLAS Fluor-buergerite / Fluor-Buergerit NaFe3+3Al6(Si6O18)(BO3)3O3F Brown crystal of fluor-buergerite. Mexquitic, San Luis Potosi, Mexico. Picture size 7 mm. Collection and foto Thomas Witzke. Brauner Kristall von Fluor-Buergerit. Mexquitic, San Luis Potosi, Mexico. Bildbreite 7 mm. Sammlung und Foto Thomas Witzke. © Thomas Witzke |
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