Backscatter electrons
Band
Banded
Banded iron formation (BIF)
Banding
Barrovian facies series
Basal
Basal cleavage
Basal pinacoid
Basalt
Base
Basement rock
Basic
Basis
Batholith
Bauxite
Baveno twin
Bead test
Becke line
Bed
Bedding
Bedrock
Belemnite
Bentonite
Berman balance
Bertrand lens
Beta rays
Biaxial
Binary solution
Biogenic
Bipyramid
Bipyramidal
Bipyramidal hexagon
Bipyramidal hexagonal
Bipyramidal hexagonal prism
Birefringence
Birthstone
Bitumen
Bituminous
Bladed
Blocky
Blowpipe test
Blueschist (rock)
Blueschist facies series
Blueschist(facies)
Body centered
Body diagonal
Bohr model of the atom
Boiling point
Bomb
Bond
Borate
Borates
Borax
Bort
Bortyoidal
Botryoid
Botryoidal
Boule
Bowen’s reaction series
Bragg law
Brass
Bravais lattices
Brazil law
Breccia
Brecciated
Bridging oxygen
Brilliant cut
Brilliant luster
Brine
Brittle
Bronze
Brownspar
Brucite layer
Buchan facies series
Bullion
Burial metamorphism
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