Properties & Information
Obsidian (Black)
Obsidian (Black)SCIENCE / MINERALOGYBlack Obsidian is natural volcanic glass produced from silica-rich lava that cooled too rapidly to crystallize. It is amorphous rather than crystalline and breaks with sharp conchoidal...
Obsidian (Black)
Obsidian (Black)SCIENCE / MINERALOGYBlack Obsidian is natural volcanic glass produced from silica-rich lava that cooled too rapidly to crystallize. It is amorphous rather than crystalline and breaks with sharp conchoidal...
NWA 4420 Meteorite
NWA 4420 MeteoriteSCIENCE / MINERALOGYNWA 4420 is a numbered meteorite find from Northwest Africa. The NWA designation identifies a documented meteorite specimen or pairing, but exact classification should follow the...
NWA 4420 Meteorite
NWA 4420 MeteoriteSCIENCE / MINERALOGYNWA 4420 is a numbered meteorite find from Northwest Africa. The NWA designation identifies a documented meteorite specimen or pairing, but exact classification should follow the...
Nuummite
NuummiteSCIENCE / MINERALOGYNuummite is a metamorphic rock composed largely of intergrown amphiboles, especially anthophyllite and gedrite, in a dark matrix. Iridescent gold, copper, blue, or green flashes are produced by...
Nuummite
NuummiteSCIENCE / MINERALOGYNuummite is a metamorphic rock composed largely of intergrown amphiboles, especially anthophyllite and gedrite, in a dark matrix. Iridescent gold, copper, blue, or green flashes are produced by...
Nundoorite
NundooriteSCIENCE / MINERALOGYNundoorite is an Australian trade name for green, gray, brown, and cream patterned ornamental rock from the Nundora Station region. It is a multi-mineral metamorphic/altered rock rather than...
Nundoorite
NundooriteSCIENCE / MINERALOGYNundoorite is an Australian trade name for green, gray, brown, and cream patterned ornamental rock from the Nundora Station region. It is a multi-mineral metamorphic/altered rock rather than...
Nontronite
NontroniteSCIENCE / MINERALOGYNontronite is an iron-rich smectite clay mineral, a hydrated iron phyllosilicate that commonly appears yellow-green, olive, brown, or earthy green. It is extremely fine-grained and soft.GEOLOGY & FORMATIONIt...
Nontronite
NontroniteSCIENCE / MINERALOGYNontronite is an iron-rich smectite clay mineral, a hydrated iron phyllosilicate that commonly appears yellow-green, olive, brown, or earthy green. It is extremely fine-grained and soft.GEOLOGY & FORMATIONIt...
Noble Shungite
Noble ShungiteSCIENCE / MINERALOGYNoble Shungite is the commercial term for lustrous, unusually carbon-rich shungite from Karelia, Russia. It is a carbon-rich rock rather than a crystalline carbon mineral.GEOLOGY & FORMATIONIt...
Noble Shungite
Noble ShungiteSCIENCE / MINERALOGYNoble Shungite is the commercial term for lustrous, unusually carbon-rich shungite from Karelia, Russia. It is a carbon-rich rock rather than a crystalline carbon mineral.GEOLOGY & FORMATIONIt...