nichromite
An isometric-hexoctahedral black mineral containing aluminum, chromium, cobalt, iron, nickel, and oxygen.

nickelalumite
A monoclinic-sphenoidal sky blue mineral containing aluminum, copper, hydrogen, nickel, nitrogen, oxygen, and sulfur.

nickelaustinite
An orthorhombic-disphenoidal mineral containing arsenic, calcium, hydrogen, nickel, oxygen, and zinc.

nickelbischofite
A monoclinic-prismatic mineral containing chlorine, hydrogen, nickel, and oxygen.

nickelhexahydrite
A monoclinic-prismatic bluish green mineral containing hydrogen, iron, magnesium, nickel, oxygen, and sulfur.

nickeline
A mineral, a form of nickel arsenide, NiAs, having a metallic lustre and copper-red colour, that is a minor ore of nickel.

nickelines
plural of nickeline

nickellotharmeyerite
A monoclinic-prismatic mineral containing arsenic, bismuth, calcium, cobalt, hydrogen, iron, nickel, and oxygen.

nickelphosphide
A tetragonal-disphenoidal mineral containing iron, nickel, and phosphorus.

nickelschneebergite
A monoclinic-prismatic mineral containing arsenic, bismuth, calcium, cobalt, hydrogen, iron, nickel, and oxygen.

nickenichite
A monoclinic-prismatic mineral containing aluminum, arsenic, calcium, copper, iron, magnesium, oxygen, and sodium.

nicopyrite
Synonym of pentlandite.

nifontovite
A monoclinic mineral containing boron, calcium, hydrogen, and oxygen.

nigerite
A synonym of ferronigerite.

niggliite
A hexagonal-dihexagonal dipyramidal silver white mineral containing platinum and tin.

nigrine
A ferruginous variety of rutile.

nikischerite
A trigonal-rhombohedral green mineral containing aluminum, hydrogen, iron, oxygen, sodium, and sulfur.

nimite
A monoclinic-prismatic yellow green mineral containing aluminum, hydrogen, iron, magnesium, nickel, oxygen, and silicon.

nineling
A twin crystal formed from nine individuals.

ninelings
plural of nineling

ningyoite
An orthorhombic-disphenoidal mineral containing calcium, cerium, hydrogen, oxygen, phosphorus, and uranium.

niobite
The mineral columbite.

niobites
plural of niobite

niobocarbide
An isometric-hexoctahedral mineral containing carbon, niobium, and tantalum.

niobokupletskite
A triclinic-pinacoidal mineral containing fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, titanium, zinc, and zirconium.

niobophyllite
A triclinic brown mineral containing fluorine, hydrogen, iron, manganese, niobium, oxygen, potassium, silicon, sodium, and titanium.

niocalite
A monoclinic-domatic light yellow mineral containing calcium, fluorine, niobium, oxygen, and silicon.

nisbite
An orthorhombic-dipyramidal tin white mineral containing antimony and nickel.

nissonite
A monoclinic-prismatic bluish green mineral containing copper, hydrogen, magnesium, oxygen, and phosphorus.

nitrammite
gwihabaite

nitratine
A trigonal-hexagonal scalenohedral mineral form of sodium nitrate.

nitratines
plural of nitratine

nitratite
Synonym of nitratine.

nitrobarite
A mineral consisting of barium nitrate.

nitrocalcite
A hydrated calcium nitrate mineral that forms as an efflorescence where manure contacts concrete or limestone in a dry environment, as in stables or caverns.

nitromagnesite
Magnesium nitrate.

nitromagnesites
plural of nitromagnesite

nizamoffite
A colourless orthorhombic mineral containing hydrogen, manganese, oxygen, phosphorus, and zinc.

nobleite
A monoclinic-prismatic mineral containing boron, calcium, hydrogen, and oxygen.

nolanite
A hexagonal-dihexagonal pyramidal black mineral containing aluminum, hydrogen, iron, oxygen, titanium, and vanadium.

nonjewelry
Items that are not jewelry.

nonminerals
plural of nonmineral

nontronite
An iron-rich clay mineral of the montmorillonite group

nontronites
plural of nontronite

noonkanbahite
A potassic batisite mineral.

norbergite
An orthorhombic-dipyramidal mineral containing fluorine, hydrogen, magnesium, oxygen, and silicon.

nordenskioldine
A stanniferous borate mineral.

nordmarkite
A variety of syenite with quartz, mostly composed of microperthite.

nordmarkites
plural of nordmarkite

nordstrandite
A triclinic-pedial mineral containing aluminum, hydrogen, and oxygen.

norite
A granular crystalline rock consisting essentially of a triclinic feldspar (such as labradorite) and hypersthene.

normalin
A supposed mineral, now believed to be phillipsite.

norrishite
A monoclinic-prismatic mineral containing lithium, manganese, oxygen, potassium, and silicon.

norsethite
A trigonal-trapezohedral mineral containing barium, carbon, magnesium, and oxygen.

northfieldite
A type of siliceous rock containing of quartz and muscovite.

northupite
An isometric-diploidal mineral containing carbon, chlorine, magnesium, oxygen, and sodium.

nosean
noselite.

noseans
plural of nosean

noselite
A rare fluorescent isometric feldspathoid mineral.

noselites
plural of noselite

novaculite
A variety of chert, very rich in quartz, that has been used to make whetstones

novaculites
plural of novaculite

novakite
A monoclinic-prismatic mineral containing arsenic, copper, and silver.

novgorodovaite
A monoclinic-prismatic colorless mineral containing calcium, carbon, chlorine, hydrogen, and oxygen.

nowackiite
A trigonal-pyramidal mineral containing arsenic, copper, sulfur, and zinc.

nuffieldite
An orthorhombic-dipyramidal pale creamy white mineral containing bismuth, copper, lead, and sulfur.

nukundamite
A trigonal-hexagonal scalenohedral copper red mineral containing copper, iron, and sulfur.

nullaginite
A monoclinic mineral containing carbon, hydrogen, nickel, and oxygen.

nuummite
A rare metamorphic rock that consists of gedrite and anthophyllite.

oboyerite
A triclinic mineral containing hydrogen, lead, oxygen, and tellurium.

obradovicite
An orthorhombic-dipyramidal pea green mineral containing arsenic, copper, hydrogen, iron, molybdenum, oxygen, potassium, and sodium.

obsidians
plural of obsidian

octahedrite
The mineral anatase.

odinite
A monoclinic-domatic mineral containing aluminum, hydrogen, iron, magnesium, manganese, oxygen, silicon, and titanium.

odintsovite
An orthorhombic-dipyramidal mineral containing beryllium, calcium, oxygen, potassium, silicon, sodium, and titanium.

oenite
An orthorhombic silver white mineral containing antimony, arsenic, and cobalt.

ogdensburgite
An orthorhombic-dipyramidal mineral containing arsenic, calcium, hydrogen, iron, manganese, oxygen, and zinc.

ohmilite
A monoclinic-prismatic light pink mineral containing hydrogen, iron, oxygen, silicon, strontium, and titanium.

ojuelaite
A monoclinic-prismatic greenish yellow mineral containing arsenic, hydrogen, iron, oxygen, and zinc.

okayamalite
A tetragonal-scalenohedral creamy white mineral containing boron, calcium, oxygen, and silicon.

okhotskite
A mineral containing calcium, manganese, silicon, oxygen and hydrogen, first found in Japan.

olekminskite
A trigonal-trapezohedral mineral containing barium, calcium, carbon, oxygen, and strontium.

olenite
A trigonal-ditrigonal pyramidal light pink mineral containing aluminum, boron, hydrogen, oxygen, silicon, and sodium.

olgite
A trigonal-hexagonal scalenohedral mineral containing barium, oxygen, phosphorus, sodium, and strontium.

oligist
Hematite

oligists
plural of oligist

olivinite
dunite

olkhonskite
A monoclinic black mineral containing chromium, oxygen, titanium, and vanadium.

olmsteadite
An orthorhombic-pyramidal mineral containing hydrogen, iron, niobium, oxygen, phosphorus, potassium, and tantalum.

olsacherite
An orthorhombic-disphenoidal colorless mineral containing lead, oxygen, selenium, and sulfur.

olshanskyite
A triclinic-pinacoidal mineral containing boron, calcium, hydrogen, and oxygen.

olympite
An orthorhombic-disphenoidal colorless mineral containing lithium, oxygen, phosphorus, and sodium.

omeiite
An orthorhombic-dipyramidal steel gray mineral containing arsenic, osmium, and ruthenium.