arsenuranylite
An orthorhombic-dipyramidal mineral containing arsenic, calcium, hydrogen, oxygen, and uranium.

arthurite
An apple-green monoclinic mineral.

artroeite
A lead-aluminium-fluorine mineral found in Arizona.

artsmithite
A monoclinic-prismatic mineral containing aluminum, hydrogen, mercury, oxygen, and phosphorus.

arupite
A monoclinic-prismatic mineral containing hydrogen, iron, magnesium, manganese, nickel, oxygen, and phosphorus.

arzakite
A monoclinic mineral containing bromine, chlorine, mercury, and sulfur.

asbecasite
A trigonal-ditrigonal pyramidal mineral containing aluminum, arsenic, beryllium, calcium, oxygen, silicon, tin, and titanium.

asbestiforms
plural of asbestiform

asbolane
A hexagonal mineral containing calcium, cobalt, hydrogen, manganese, nickel, and oxygen.

aschamalmite
A monoclinic-prismatic creamy white mineral containing bismuth, lead, and sulfur.

ashanite
A discredited mineral species containing niobium, tantalum, uranium, iron and manganese.

ashburtonite
A tetragonal-dipyramidal blue mineral containing carbon, chlorine, copper, hydrogen, lead, oxygen, and silicon.

ashoverite
A tetragonal-ditetragonal dipyramidal mineral containing hydrogen, oxygen, and zinc.

asisite
A yellow tetragonal mineral.

asparagolite
apatite

asphaltite
Any of various bitumens containing asphaltenes.

asphaltites
plural of asphaltite

aspidolite
A monoclinic-prismatic mineral containing aluminum, fluorine, hydrogen, iron, magnesium, oxygen, potassium, silicon, sodium, and titanium.

asselbornite
An isometric-hexoctahedral mineral containing arsenic, barium, bismuth, hydrogen, lead, oxygen, phosphorus, and uranium.

ataxite
A type of iron meteorite that has a high nickel content

ataxites
plural of ataxite

athabascaite
An orthorhombic mineral containing copper and selenium.

atlasite
A discredited mineral, thought to be a mixture of azurite and atacamite.

atokite
An isometric-hexoctahedral white mineral containing palladium, platinum, and tin.

attakolite
A monoclinic-prismatic mineral containing aluminum, calcium, hydrogen, iron, manganese, oxygen, phosphorus, silicon, and strontium.

aubrite
An achondrite composed mostly of enstatite

auerlite
A phosphorus-bearing variety of thorite.

auricupride
A natural alloy of copper and gold, found as a cubic reddish-yellow mineral.

aurivilliusite
A monoclinic-prismatic dark gray black mineral containing bromine, chlorine, iodine, mercury, and oxygen.

aurorite
A triclinic-pinacoidal mineral containing calcium, hydrogen, manganese, oxygen, and silver.

aurostibite
A rare isometric gold antimonide mineral of the pyrite group.

austinite
A secondary mineral found in the oxidized zone of some arsenic-rich base-metal deposits.
Misspelling of austenite.

austinites
plural of austinite

australite
A kind of tektite found in Australia.

australites
plural of australite

autolith
A rock fragment that has become enveloped in a larger rock of a similar type, during the latter's development and hardening.

automolite
A form of gahnite.

autunite
A yellow mineral with tetragonal crystals, Ca(UO₂)₂(PO₄)₂·10-12H₂O.

autunites
plural of autunite

averievite
A trigonal-pyramidal black mineral containing chlorine, copper, oxygen, and vanadium.

avicennite
An isometric-diploidal grayish black mineral containing oxygen and thallium.

avogadrite
An orthorhombic-dipyramidal mineral containing boron, cesium, fluorine, and potassium.

awaruite
An isometric-hexoctahedral mineral containing iron and nickel.

axelite
A tetragonal mineral containing arsenic, chlorine, copper, fluorine, sodium and oxygen

azoproite
An orthorhombic-dipyramidal black mineral containing boron, iron, magnesium, oxygen, and titanium.

azorite
zircon.

bababudanite
Synonym of magnesioriebeckite.

babefphite
A tetragonal-ditetragonal dipyramidal white mineral containing barium, beryllium, fluorine, oxygen, and phosphorus.

babkinite
A trigonal silvery gray mineral containing bismuth, lead, selenium, and sulfur.

backstromite
Synonym of hydrohausmannite.

baeumlerite
Synonym of chlorocalcite.

bafertisite
A monoclinic-domatic mineral containing barium, hydrogen, iron, manganese, oxygen, silicon, and titanium.

baghdadite
A monoclinic-prismatic colorless mineral containing calcium, oxygen, silicon, titanium, and zirconium.

bagrationite
A variety of allanite.

bahiaite
A hornblende hypersthenite mineral.

bahiaites
plural of bahiaite

bahianite
A monoclinic-prismatic mineral containing aluminum, antimony, hydrogen, and oxygen.

baileychlore
A yellow-green mineral of the chlorite group with the mineral formula (Zn,Fe,Al,Mg)₆(Si,Al)₄O₁₀(OH)₈.

baileychlores
plural of baileychlore

bajuband
A type of Indian armlet or bracelet worn around the upper arm, often ornate and made of precious metals like gold or silver, embellished with gemstones, pearls, or intricate carvings. They are a part of traditional Indian attire, particularly in bridal wear and for special occasions.

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

bakhchisaraitsevite
A soft mineral containing hydrogen, magnesium, oxygen, phosphorus, and sodium.

baksanite
A trigonal-hexagonal scalenohedral steel gray mineral containing bismuth, sulfur, and tellurium.

balangeroite
A monoclinic-prismatic mineral containing hydrogen, iron, magnesium, manganese, oxygen, and silicon.

balipholite
An orthorhombic-dipyramidal mineral containing aluminum, barium, fluorine, hydrogen, lithium, magnesium, oxygen, and silicon.

balkanite
An orthorhombic-disphenoidal white gray mineral containing copper, mercury, silver, and sulfur.

ballas
A spherical aggregate of small diamond grains that have a radial or granular structure.

ballases
plural of ballas

balliranoite
A mineral with the formula ((Na,K)₆Ca₂(Si₆Al₆O₂₄)Cl₂(CO)₃).

ballstone
A rounded mass of unstratified limestone found within stratified limestone beds.

baltimorite
Synonym of antigorite.

balyakinite
An orthorhombic-dipyramidal mineral containing copper, oxygen, and tellurium.

bambollaite
A tetragonal-ditetragonal dipyramidal mineral containing copper, selenium, and tellurium.

bamfordite
A triclinic mineral containing hydrogen, iron, molybdenum, and oxygen.

banalsite
An orthorhombic-pyramidal white mineral containing aluminum, barium, oxygen, silicon, and sodium.

bandylite
A tetragonal-ditetragonal dipyramidal dark blue mineral containing boron, chlorine, copper, hydrogen, and oxygen.

bannermanite
A monoclinic-prismatic black mineral containing oxygen, potassium, sodium, and vanadium.

bannisterite
A monoclinic-prismatic mineral containing aluminum, calcium, hydrogen, iron, magnesium, manganese, oxygen, potassium, silicon, sodium, and zinc.

baratovite
A monoclinic-prismatic pearl white mineral containing calcium, fluorine, lithium, oxygen, potassium, silicon, titanium, and zirconium.

barberiite
An orthorhombic-dipyramidal colorless mineral containing boron, fluorine, hydrogen, and nitrogen.

barbierite
Synonym of microcline.

barbosalite
A monoclinic-prismatic mineral containing hydrogen, iron, oxygen, and phosphorus.

barentsite
A triclinic colorless mineral containing aluminum, carbon, fluorine, hydrogen, oxygen, and sodium.

bariandite
A monoclinic-prismatic blue black mineral containing aluminum, hydrogen, oxygen, and vanadium.

baricite
A monoclinic-prismatic mineral containing hydrogen, iron, magnesium, oxygen, and phosphorus.

bariomicrolite
An isometric-hexoctahedral mineral containing barium, hydrogen, niobium, oxygen, and tantalum.

bariosincosite
A tetragonal-dipyramidal mineral derived from sincosite by replacement of the calcium by barium.

barkevicite
Alternative form of barkevikite.

barkevikite
A particular hornblende mineral.

barkevikites
plural of barkevikite

barnesite
A monoclinic-prismatic mineral containing hydrogen, oxygen, sodium, and vanadium.

barnhardtite
A kind of copper ore.