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Natromontebrasite: (Na,Li)Al(PO4)(OH,F)
Comments: Pale tan to orange natromontebrasite cleavages in quartz. Location: Mica Load, Canon City, Fremont County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natron: Na2CO3·10(H2O)
Comments: Opaque white powdery massive natron. Location: Atlin, British Columbia, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natronambulite: (Na,Li)Mn++4[Si5O14(OH)]
Comments: Thin section image of natronamulite (Nn) in assocation with aegirine (Ac), arfvedsonite (Am) and quartz (Q). (JMPS, v12:332). Location: Tanohata mine, Iwate Prefecture, Japan. Scale: Picture Size 1.9 x 1.5 mm. © Mineralogical Journal
Natroniobite: NaNbO3
Comments: Olive-green colored translucent crystalline natroniobite fragments. Location: Lesnaya Varaka Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrophilite: NaMnPO4
Comments: Natrophilite with lithiophilite. Location: Abija N. Fillow Quarry (Branchville Quarry), Branchville, Redding, Fairfield Co., Connecticut, USA. Scale: Specimen Size 3.7 x 2.2 x 1.9 cm. © Rob Lavinsky
Natrophosphate: Na7(PO4)2F·19(H2O)
Comments: Specimen of natrophosphate sealed into a plastic box. Location: Koashva Mt., Khibiny Massif, Kola Peninsula, Russia. Scale: Specimen Size 2x1.5x1 cm. © Sergey Vasiliev / Systematic Mineralogy
Natrosilite: Na2Si2O5
Comments: Colorless, clear to translucent crystalline natrosilite fragment, found in pale pink ussingite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrotantite: Na2Ta4O11
Comments: BSE image of ferrotapiolite (1), natrotantite (2) and simsonite (3). Location: Alto Cajazeiras, south of Junro do Serido, Paraibo, Brazil. Scale: See Image. © Diederik Visser
Natroxalate: Na2C2O4
Comments: Colorless transparent crystalline natroxalate fragment. Location: Mount Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrozippeite: Na4(UO2)6(SO4)3(OH)10·4(H2O)
Comments: Yellow encrustations of sodium-zippeite on matrix. Location: Kovagoszolos, Mecsek Mts., Pecs Co., Hungary. Scale: Picture size 0.5 cm. © Paul M. Schumacher