barquillite
A tetragonal-scalenohedral gray mineral containing cadmium, copper, germanium, and sulfur.

barrandite
The mineral (Al,Fe³⁺)PO₄⋅2H₂O, related to taranakite.

barrandites
plural of barrandite

barringerite
A hexagonal-ditrigonal dipyramidal gray white mineral containing iron, nickel, and phosphorus.

barroisite
A monoclinic-prismatic blue mineral containing aluminum, calcium, hydrogen, iron, magnesium, oxygen, silicon, and sodium.

bartelkeite
A monoclinic mineral containing germanium, iron, lead, and oxygen.

bartonite
A tetragonal-ditetragonal dipyramidal black brown mineral containing iron, potassium, and sulfur.

barylite
An orthorhombic-pyramidal mineral containing barium, beryllium, oxygen, and silicon.

barysilite
A trigonal-hexagonal scalenohedral mineral containing lead, manganese, oxygen, and silicon.

barytolamprophyllite
A monoclinic-prismatic mineral containing aluminum, barium, calcium, fluorine, hydrogen, iron, magnesium, manganese, niobium, oxygen, potassium, silicon, sodium, strontium, and titanium.

basalt
A hard mafic igneous rock of varied mineral content; volcanic in origin, which makes up much of the Earth's oceanic crust.
A type of unglazed pottery.

basalte
Obsolete form of basalt.

basaltes
plural of basalte

basalts
plural of basalt

basaltware
Articles made from basalt.

basaluminite
A monoclinic-sphenoidal mineral containing aluminum, hydrogen, oxygen, and sulfur.

basepath
The grassless ways around the baseball diamond on which runners advance.
The path between two adjacent bases, such as between the first and the second base.

baserock
The layer of hardrock that lies beneath any surface soil, clay, silt, gravel, and/or sedimentary rock.

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

bastnaesite
A yellow-brown mineral that is a source of several rare earth metals, especially gadolinium, samarium, and neodymium.

bastnaesites
plural of bastnaesite

bastnasite
Alternative form of bastnaesite.

bastnasites
plural of bastnasite

batchelorite
A green, slaty variety of muscovite.

batholite
Synonym of batholith.

batholites
plural of batholite

batholith
A large irregular mass of intrusive igneous rock that has melted or forced itself into surrounding strata

batholiths
plural of batholith

batiferrite
A hexagonal-dihexagonal dipyramidal black mineral containing barium, iron, magnesium, manganese, oxygen, potassium, sodium, strontium, and titanium.

batisite
An orthorhombic-pyramidal mineral containing barium, oxygen, potassium, silicon, sodium, and titanium.

baumhauerite
A triclinic-pinacoidal mineral containing arsenic, lead, and sulfur.

baumstarkite
A triclinic-pinacoidal gray to white mineral containing antimony, arsenic, silver, and sulfur.

bauranoite
A triclinic reddish brown mineral containing barium, hydrogen, oxygen, and uranium.

bauxite
The principal ore of aluminium; a clay-like mineral, being a mixture of hydrated oxides and hydroxides.

bauxites
plural of bauxite

bavalite
Synonym of chamosite.

bavenite
An orthorhombic-pyramidal mineral containing aluminum, beryllium, calcium, hydrogen, oxygen, and silicon.

bayerite
A polytype of gibbsite.

bayerites
plural of bayerite

bayldonite
A monoclinic-prismatic mineral containing arsenic, copper, hydrogen, lead, oxygen, and zinc.

bayleyite
A monoclinic-prismatic mineral containing carbon, hydrogen, magnesium, oxygen, and uranium.

baylissite
A monoclinic-prismatic colorless mineral containing carbon, hydrogen, magnesium, oxygen, and potassium.

bazhenovite
A monoclinic-prismatic mineral containing calcium, hydrogen, oxygen, and sulfur.

bazirite
A hexagonal-ditrigonal dipyramidal colorless mineral containing barium, oxygen, silicon, and zirconium.

bearsite
A monoclinic white mineral containing arsenic, beryllium, hydrogen, and oxygen.

bearthite
A mineral containing aluminum, calcium, hydrogen, oxygen, and phosphorus.

beauxite
Archaic form of bauxite.

beauxites
plural of beauxite

beaverite
A trigonal-ditrigonal pyramidal yellow mineral containing aluminum, copper, hydrogen, iron, lead, oxygen, and sulfur.

bechererite
A trigonal-pyramidal light green mineral containing copper, hydrogen, oxygen, silicon, sulfur, and zinc.

becquerelite
An orthorhombic-pyramidal mineral containing calcium, hydrogen, oxygen, and uranium.

bederite
An orthorhombic-dipyramidal mineral containing aluminum, calcium, hydrogen, iron, magnesium, manganese, oxygen, phosphorus, and sodium.

beegerite
A discredited mineral species, a mixture of matildite and schirmerite.

beerbachite
A fine-grained granoblastic rock formed from the alteration of another igneous rock.

beerbachites
plural of beerbachite

behierite
A tetragonal-ditetragonal dipyramidal pink gray mineral containing boron, niobium, oxygen, and tantalum.

behoite
An orthorhombic-disphenoidal mineral containing beryllium, hydrogen, and oxygen.

belendorffite
A trigonal-ditrigonal pyramidal mineral containing copper and mercury.

belkovite
A hexagonal-ditrigonal dipyramidal brown mineral containing barium, niobium, oxygen, silicon, and titanium.

bellbergite
A hexagonal mineral containing aluminum, barium, calcium, hydrogen, oxygen, potassium, silicon, sodium, and strontium.

bellidoite
A tetragonal-dipyramidal silver gray mineral containing copper and selenium.

bellingerite
A triclinic-pinacoidal light green mineral containing copper, hydrogen, iodine, and oxygen.

belloite
A monoclinic-prismatic mineral containing chlorine, copper, hydrogen, and oxygen.

belyankinite
An amorphous mineral containing calcium, hydrogen, niobium, oxygen, titanium, and zirconium.

bementite
A monoclinic-prismatic mineral containing hydrogen, manganese, oxygen, and silicon.

benauite
A trigonal-hexagonal scalenohedral mineral containing barium, hydrogen, iron, lead, oxygen, phosphorus, strontium, and sulfur.

benavidesite
A monoclinic-prismatic mineral containing antimony, iron, lead, manganese, and sulfur.

benjaminite
A monoclinic-prismatic mineral containing bismuth, copper, lead, silver, and sulfur.

benleonardite
A tetragonal very pale blue mineral containing antimony, arsenic, silver, sulfur, and tellurium.

benstonite
A trigonal-pyramidal mineral containing barium, calcium, carbon, magnesium, manganese, oxygen, and strontium.

bentonite
Any of several impure clay minerals consisting mostly of montmorillonite.
A porous clay formed by the decomposition of volcanic ash that swells 5 to 6 times its original volume in the presence of water.

bentonites
plural of bentonite

bentorite
A hard transparent violet mineral with vitreous lustre.

bentorites
plural of bentorite

benyacarite
An orthorhombic-dipyramidal mineral containing aluminum, fluorine, hydrogen, iron, magnesium, manganese, oxygen, phosphorus, potassium, sodium, and titanium.

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

berdesinskiite
A monoclinic reddish brown mineral containing oxygen, titanium, and vanadium.

berezanskite
A hexagonal-dihexagonal dipyramidal white mineral containing lithium, oxygen, potassium, silicon, and titanium.

bergenite
A monoclinic-prismatic mineral containing barium, calcium, hydrogen, oxygen, phosphorus, and uranium.

bergslagite
A monoclinic-prismatic mineral containing arsenic, beryllium, calcium, hydrogen, and oxygen.

berlinite
A trigonal-trapezohedral mineral containing aluminum, oxygen, and phosphorus.

bermanite
A monoclinic-sphenoidal mineral containing hydrogen, manganese, oxygen, and phosphorus.

bernalite
An orthorhombic-dipyramidal mineral containing hydrogen, iron, lead, oxygen, silicon, and zinc.

bernardite
A monoclinic-prismatic black mineral containing antimony, arsenic, sulfur, and thallium.

berthierine
A monoclinic-domatic mineral containing aluminum, hydrogen, iron, magnesium, oxygen, and silicon.

bertossaite
An orthorhombic light pink mineral containing aluminum, calcium, hydrogen, lithium, oxygen, and phosphorus.