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Juonniite: CaMgSc(PO4)2(OH)·4(H2O)
Comments: Brownish grain of juonniite on matrix. Location: Kovdor Mine, Kovdor massif, Kola Peninsula, Murmanskaja Oblast', Northern Region, Russia. Scale: Picture size 4 mm. © Thomas Witzke / Abraxas-Verlag