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Nacaphite: Na(Na,Ca)2(PO4)F Thermonatrite: Na2CO3·(H2O)
Comments: Sparse pale yellow-brown microcrystal and crystalline nacaphite with white thermonatrite on a dark matrix. Location: Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species