Mineral Specimen Images (N)

Novacekite: Mg(UO2)2(AsO4)2·12(H2O)

Comments: Scanner image of massive, yellow novacekite covering matrix.
Location: Serra das Éguas,Bahia, Northeast Region, Brazil. Scale: Specimen size 4.1 cm.
© Paul M. Schumacher

Novacekite: Mg(UO2)2(AsO4)2·12(H2O)  
Metanovacekite: Mg(UO2)2(AsO4)2·4-8(H2O)

Comments: Yellow, translucent platy novacekite/metanovacekite crystal aggregate.
Location: Rabejac Mine, Olmet, Herault, France. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Novakite: (Cu,Ag)21As10  
Berzelianite: Cu2Se

Comments: Gray metallic dendritic novakite in white calcite with tarnished black berzelianite.
Location: Cerny Dul, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Novakite: (Cu,Ag)21As10  
Berzelianite: Cu2Se

Comments: Gray metallic dendritic novakite in white calcite with tarnished black berzelianite.
Location: Cerny Dul, Bohemia, Vychodocesky, Czech Republic. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Novgorodovaite: Ca2(C2O4)Cl2·2(H2O)

Comments: A small fragment of the oxalate mineral novgorodovaite.
Location: Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan. Scale: Grain size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Novgorodovaite: Ca2(C2O4)Cl2·2(H2O)

Comments: A small fragment of the oxalate mineral novgorodovaite.
Location: Chelkar salt dome, Aksai Valley, Aqtöbe Oblysy (Aktubinsk [Aktyubinsk; Aktubinskaya] Oblast'), Kazakhstan. Scale: Grain size 0.8 mm.
© Thomas Witzke / Abraxas-Verlag

Nsutite: (Mn++++1-x)(Mn++x)(O2-2x)(OH2x) where x = 0.06-0.07

Comments: Dark gray to black sub-metallic to dull massive nsutite.
Location: Nsuta, Western Province, Ghana. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nsutite: (Mn++++1-x)(Mn++x)(O2-2x)(OH2x) where x = 0.06-0.07

Comments: Dark gray to black sub-metallic to dull massive nsutite.
Location: Nsuta, Western Province, Ghana. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Nukundamite: (Cu,Fe)4S4  
Covellite: CuS

Comments: Metallic brownish rim of nukundamite with dark purplish-blue covellite on fine-grained pyrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Nukundamite: (Cu,Fe)4S4  
Covellite: CuS

Comments: Metallic brownish rim of nukundamite with dark purplish-blue covellite on fine-grained pyrite.
Location: Ronneburg U deposit, Gera district, Thuringia, Germany. Scale: Picture size 7 mm.
© Thomas Witzke / Abraxas-Verlag

Nullaginite: Ni2(CO3)(OH)2

Comments: BSE image of a nullaginite nodule in a polished section. (CanMin, v19:315).
Location: Otwav deposit, Nullagine district, Western Australia.. Scale: See Image.
© Canadian Mineralogist

Nullaginite: Ni2(CO3)(OH)2

Comments: BSE image of a nullaginite nodule in a polished section. (CanMin, v19:315).
Location: Otwav deposit, Nullagine district, Western Australia.. Scale: See Image.
© Canadian Mineralogist

Nullaginite: Ni2(CO3)(OH)2

Comments: Green encrustations of nullaginite on matrix.
Location: Widgiemooltha, Western Australia, Australia. Scale: Sample size: 2 x 2 x 1 cm.
© Tom Loomis / Dakota Matrix

Nullaginite: Ni2(CO3)(OH)2

Comments: Green encrustations of nullaginite on matrix.
Location: Widgiemooltha, Western Australia, Australia. Scale: Sample size: 2 x 2 x 1 cm.
© Tom Loomis / Dakota Matrix

Numanoite: Ca4CuB4O6(OH)6(CO3)2  
Borcarite: Ca4MgB4O6(OH)6(CO3)2

Comments: Zoned borcarite (Bc) crystal with a core of green numanoite (Nm). CanMin 45:307.
Location: Fuka mine, 40 km west-northwest of Okayama City, western Japan. Scale: See Image.
© Canadian Mineralogist

Numanoite: Ca4CuB4O6(OH)6(CO3)2  
Borcarite: Ca4MgB4O6(OH)6(CO3)2

Comments: Zoned borcarite (Bc) crystal with a core of green numanoite (Nm). CanMin 45:307.
Location: Fuka mine, 40 km west-northwest of Okayama City, western Japan. Scale: See Image.
© Canadian Mineralogist

Nyerereite: Na2Ca(CO3)2  
Gregoryite: (Na2,K2,Ca)CO3

Comments: Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in inert argon atmosphere.
Location: Ol Doinyo Lengai Vulkan, Maasai Steppe, East Africa Rift Valley, Tanzania. See Link. Scale: Rock size 2 cm.
© Richard Dale / Dale Minerals

Nyerereite: Na2Ca(CO3)2  
Gregoryite: (Na2,K2,Ca)CO3

Comments: Sodium (nyereteite) and potassium (gregoryite) carbonates, not stable in normal atmosphere, collected molten from the volcano and maintained in inert argon atmosphere.
Location: Ol Doinyo Lengai Vulkan, Maasai Steppe, East Africa Rift Valley, Tanzania. See Link. Scale: Rock size 2 cm.
© Richard Dale / Dale Minerals