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Mpororoite: Al(WO3)(OH)3·2(H2O) Anthoinite: AlWO3(OH)3
Comments: White chalky massive mpororoite with brown anthoinite. Location: Kara Mine, Tasmania, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Muirite: Ba10Ca2Mn++TiSi10O30(OH,Cl,F)10 Sanbornite: BaSi2O5
Comments: Translucent orange crystalline muirite in sanbornite. Location: Big Creek, Fresno County, California, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Mullite: Al(4+2x)Si(2-2x)O(10-x) where x =0.17 to 0.59
Comments: Opaque white mullite masses with mica. Location: Nijar, Almeria, Andalucia, Spain. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Mundite: Al(UO2)3(PO4)2(OH)3·5(H2O)
Comments: Bright yellow crystalline mundite grains. Location: Kobokobo, Sud-Kivu, Zaire. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Munirite: NaVO3·(2-x)(H2O)
Comments: Bright yellow-orange crystalline munirite on matrix. Location: Brushy Creek, Uravan, Montrose County, Colorado, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Mushistonite: (Cu,Zn,Fe)Sn++++(OH)6
Comments: Green crystalline mushistonite coatings on quartz. Location: Etta Mine, Keystone, Pennington County, South Dakota, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Nabaphite: NaBaPO4·9(H2O)
Comments: Translucent tetrahedral nabaphite microcrystal. Location: Mount Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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
Nafertisite: Na3(Fe++,Fe+++)6(Ti2Si12O34)(O,OH)7·2(H2O)
Comments: Dark green fibrous nafertisite masses in pegmatite rock. Location: Mount Kukisvumchorr, Khibiny Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Nagashimalite: Ba4(V+++,Ti)4Si8B2O27Cl(O,OH)2
Comments: Dark olive green translucent to opaque bladed nagashimalite crystals on in pale pink rhodonite. Location: Mogurazawa mine, Kiryuu City, Gunma Prefecture, Kanto Region, Honshu Island, Japan. Scale: Picture Size 3 mm. © Jeff Weissman / Photographic Guide to Mineral Species
Nahpoite: Na2HPO4
Comments: Nearly opaque white powdery nahpoite. Location: Big Fish River, Yukon Territory, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Namansilite: NaMn+++(Si2O6)
Comments: Dark red namansilite veinlets in rock (slabbed specimen). Location: Woods mine, near Tamworth, New South Wales, Australia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Nambulite: (Li,Na)Mn++4[Si5O14(OH)]
Comments: Brown crystalline nambulite with pinkish rhodonite. Location: Gozaisho Mine, Iwaki, Fukushima, Japan. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Nastrophite: Na(Sr,Ba)(PO4)·9(H2O)
Comments: Glassy to chalky crystalline nastrophite fragment. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrite: Na2CO3
Comments: White opaque massive natrite. Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natroalunite: NaAl3(SO4)2(OH)6
Comments: Pure white porcelaneous massive natroalunite. Location: Sugarloaf Butte, Quartzite, La Paz County, Arizona, USA. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrojarosite: NaFe+++3(SO4)2(OH)6
Comments: Yellow brown natrojarosite crystals. Location: Kamareza Mine, Laurium, Attiki, Greece. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
Natrolemoynite: Na4Zr2Si10O26·9(H2O)
Comments: Radiating spray of tan natrolemoynite crystals, with brown coating, with white albite. Location: Mont Saint Hilaire, Quebec, Canada. Scale: See Photo. © Jeff Weissman / Photographic Guide to Mineral Species
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