[vc_row][vc_column][vc_column_text]
A | B | C | D | E | F | G | H | I | J |
K | L | M | N | O | P | Q | R | S | T |
U | V | W | X | Y | Z |
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-
A
- Abrasive
- Absolute Hardness
- Absorption Spectra
- Absorption spectrum
- Accessory mineral
- Accessory Plate
- Acicular
- Acid
- Acid test
- Actinide
- Activator
- Acute bisectrix
- Acute bisectrix figure (Bxa)
- Adamantine
- Adularescence
- Adularescent
- Aggregate (of crystals)
- Albite law
- Alchemy
- Alkali element
- Alkali Feldspar
- Alkaline
- Alkaline earth element
- Allochromatic
- Alloy
- Alloyed
- Alloying
- Alluvial
- Alluvial deposit
- Alluvion
- Alluvium
- Alpha rays
- Alpine
- Alpine cavity
- Alter
- Alteration
- Altered
- Amalgam
- Amber
- Ammonia
- Ammonium hydroxide
- Amorphous
- Amphibole
- Amphibole group
- Amphibolite (facies)
- Amphibolite (rock)
- Amygdule
- Analyzer
- Anatexis
- Andesite
- Angle of incidence
- Angle of refraction
- Anhedral
- Anhydrous
- Anhydrous borates
- Anhydrous sulfates
- Anion
- Anionic complex
- Anisodesmic
- Anisotropic
- Anisotropism
- Anomalous interference colors
- Anticline
- Antimonides
- Apatite group
- Aphanitic
- Aqua fortis
- Aqua regia
- Aqueous
- Aqueous solution
- Aragonite group
- Arborescent
- Arenite
- Argentiferous
- Argillacious
- Arid
- Arkose
- Arsenates
- Arsenide
- Arsenides
- Asbestiform
- Asbestos
- Asbestos amphibole
- Association (mineral)
- Asterism
- Asteroid
- Asymmetrical
- Atmophile
- Atom
- Atomic
- Atomic absorption spectrophotometer
- Atomic absorption spectroscopy (AAS)
- Atomic mass unit (amu)
- Atomic number (Z)
- Atomic structure
- Atomic weight
- Atomical
- Atomical arrangement
- Atomically
- Aufbau principle
- Augen
- Augen gneiss
- Aureole
- Auriferous
- Authigenic
- Autochthonous
- Aventurescence
- Aventurization
- Avogadro’s number
- Axes
- Axial Ratio
- Axis
- Axis (crystallographic)
- Axis (rotational)
- Axis of symmetry
-
B
- 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
-
C
- Cabochon
- Calcareous
- Calcic
- Calcine
- Calcite group
- Cameo
- Capillary
- Carat
- Carbonate
- Carbonate(mineral)
- Carbonate(radical)
- Carbonate(rock)
- Carbonates
- Carbonation reaction
- carbonatite
- Carlsbad twin
- Cartesian coordinate system
- Carved
- Carving
- Cassiterite twin
- Cast
- Casting
- Cat’s eye
- Cat’s eye effect
- Cataclastic metamorphism
- Cathode ray tube
- Cation
- Catseye
- Cave
- Cavern
- Cavities
- Cavity
- Cementation
- Cementation zone
- Center of symmetry
- Centered
- Chain silicates
- Chalcophile
- Chalk
- Characteristic radiation
- Chatoyancy
- Chatoyant
- Chemical
- Chemical bond
- Chemical composition
- Chemical formula
- Chemical precipitate
- Chemical sedimentary rock
- Chemical sediments
- Chemical structure
- Chemical weathering
- Chemist
- Chemistry
- Chert
- Chondrite
- Chondrules
- Chromates
- Chromophoers
- Chrysoberyl twin
- Class
- Clast
- Clastic
- Clastic rock
- Clausius-Clapeyron equation
- Clay
- Clay (grain size)
- Clay (mineral)
- Cleavable
- Cleavage
- Cleavage angle
- Cleavage face
- Cleavage fragment
- Cleavage surface
- Cleave
- Cleaved
- Cleaved surface
- Cleaving
- Clinonet
- Clinopinacoid
- Clinopinacoidal
- Clinopyroxene
- Closest packing
- Cluster
- Coal
- Coating
- Cockscomb
- Colloform
- Color
- Colorimetric analysis
- Columnar
- Complex twin
- Composition
- Composition plane
- Compositional zoning
- Compound
- Compound(chemical)
- Concentration factor
- Concentric
- Conchoidal
- Conchoidal fractrue
- Concretion
- Concretionary
- Condenser
- condenser lens
- Conductivity
- Conductor
- Conglomerate
- Conoscopic illumination
- Constructive interference
- Contact aureole
- Contact metamorphism
- Contact twinning
- Continuous radiation
- Continuous side(Bowen’s reaction series)
- Coordinating polyhedron
- Coordination number
- Coprolite
- Coquina
- Coral
- Core
- Country rock
- Coupled substitution
- Covalent bond
- Cover slip
- Coxcomb
- Crater
- Crazing
- Critical angle
- Crossed polars (XP)
- Crumbly
- Crust
- Crusty
- Cryptocrystalline
- Crystal
- Crystal aggregate
- Crystal angle
- Crystal class
- Crystal classes
- Crystal face
- Crystal group
- Crystal habit
- Crystal lattice
- Crystal morphology
- Crystal structure
- Crystal structure determination
- Crystal symmetry
- Crystal system
- Crystalline
- Crystallization
- Crystallize
- Crystallized
- Crystallographer
- Crystallographic axis
- Crystallographically
- Crystallography
- Ct
- Cube
- Cubic
- Cubic cleavage
- Cubic closest packing
- Cubic octahedron
- Cubic system
- Cubic(cleavage)
- Cubic(coordination)
- Cubic(system)
- Cuboctahedral
- Culet
- Cumulate
- Cut
- Cyanide method
- Cycle
- Cyclic twinning
- Cyclosilicates
- Cymophane effect
- czochralski process
-
D
- D-value
- Dacite
- Daughter element
- Daughter isotope
- Dauphine law
- Decarbonation reaction
- Decomposition
- Decrepitation
- Defect
- Degree of freedom
- Dehydration
- Dehydration reaction
- Deliquesce
- Deliquescent
- Dendrite
- Dendritic
- Density
- Deposit
- Destructive interference
- Detrital
- Detrital sedimentary rock
- Detritus
- Devitrification
- Devitrify
- Diabase
- Diagenesis
- Diamagnetic
- Diamagnetism
- Diamond lattice
- Diamond net
- Diamond(shape)
- Diamondlike luster
- Diaphaneity
- Diaphanous
- Diaphragm
- Diapir
- Diatomite
- Dichroic
- Dichroism
- Diffract
- Diffraction
- Diffraction grating
- Diffraction slit
- Diffractometer
- Diffused
- Diffusion treatment
- Dike
- Dimorph
- Dimorphous
- Dioctahedral
- Diorite
- Diploid
- Dipyramid
- Dipyramidal
- Discontinuous side(Bowen’s reaction series)
- Disequilibrium
- Disilicates
- Dispersing
- Dispersion
- Disphenoid
- Disseminated deposit
- Dissolution
- Divalent
- Divariant filed
- Divergent(crystals)
- Dodecahedral
- Dodecahedral(coordination)
- Dodecahedron
- Dollar
- Dolomite
- Dolostone
- Domain
- Dome
- Dop
- Double refraction
- Double-chain silicates
- Doublet
- Doubly primitive
- Doubly terminated
- Druse
- Drusy
- Druzy
- Dry lake
- Dry lake deposit
- Ductile
- Ductilibility
- Ductility
- Dull
- Dump
- Dunite
- Dusting
- Dynamic metamorphism
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-
E
- E ray
- Earth science
- Earthy
- Earthy luster
- Eclogite(facies)
- Eclogite(rock)
- Edge diagonal
- Edge dislocation
- Edge sharing
- Effective ionic radius
- Effervesce
- Effervescence
- Effervescent
- Effloresce
- Efflorescence
- Eightling
- Elastic
- Electric
- Electrical
- Electricity
- Electromagnetic radiation
- Electrometallurgy
- Electron
- Electron cloud
- Electron microprobe
- Electron microscope
- Electron probe micro analyzer (EPMA)
- Electronegativity
- Electrostatic valency principle (Pauling’s second rule)
- Element
- Elements
- Elliptic
- Elongated
- Embedded crystal
- Emerald
- Emerald cut
- Empirical formula
- Enaniotropic
- Enantiomorphic pair
- Encrust
- Encrustation
- Encrusting
- End centered
- End member
- Energy dispersive X-ray spectroscopy (EDS)
- Energy level
- Engrave
- Engraving
- Enthalpy (H)
- Entropy (s)
- Environment
- Epigenetic
- Epimorph
- Epitaxy
- Epithermal vein
- Epsom salts
- Equant
- Equidimensional
- Equilibrium
- Eroded
- Erosion
- Essential mineral
- Euhedral
- Evaporate
- Evaporation
- Evaporite (mineral)
- Evaporite (rock)
- Evaporite deposit
- Even
- Even fracture
- Exfoliate
- Exhalitive
- Expandable clay
- Exsolution
- Exsolution lamellae
- Extinct (mineral grain)
- Extinct (X-ray peak)
- Extinction (X-ray)
- Extinction angle
- Extract
- Extraction
- Extraordinary ray (E ray)
- Extraterrestrial
- Extrusive
- Extrusive rock
-
F
- Face
- Face centered
- Face sharing
- Facet
- Faceted
- Faceting
- Facies (metamorphic)
- Family of planes
- Fast ray
- Fault
- Feldspar
- Feldspar group
- Feldspathic
- Feldspathoid
- Feldspathoid group
- Felsic
- Ferrian
- Ferroginous
- Ferromagnetic
- Ferromagnetism
- Ferrous
- Fiber
- Fibrous
- Fibrous (cleavage)
- Fibrous(crystals)
- Filiform
- Fire
- Fishtail twin
- Fissile
- Fissility
- Flaky
- Flame test
- Flash figure
- Flat
- Flaw
- Flawless
- Flexibility
- Flexible
- Flexible and elastic
- Flexible but inelastic
- Floater
- Floater crystal
- Flood basalt
- Flow banding
- Flowstone
- Fluoresce
- Fluorescence
- Fluorescent
- Fluorescent lamp
- Fluorite twin
- Fluvial
- Fluvial deposit
- Flux
- Flux method
- Fold
- Foliated
- Foliation
- Fool’s gold
- Form
- Formula
- Fossil
- Fossiliferous
- Fossilization
- Fossilize
- Fossilized
- Fourling
- Fractional crystallization
- Fracture
- Framework silicates
- Freezing point
- Frenkel defect
-
G
- Gabbro
- Gamma rays
- Gangue
- Gem
- Gemmy
- Gemsotne Belt
- Gemstone
- General angle
- General form
- General point
- Geode
- Geothermometer
- Gibbs free energy
- Gibbs phase rule
- Gibbsite layer
- Glass
- Glide plane
- Gneiss
- Goldich’s weathering series
- Goniometer
- Grade (metamorphic)
- Grade (ore)
- Grain mount
- Graniotid
- Granite
- Granitic
- Granodiorite
- Granular
- Granulite(facies)
- Granulite(rock)
- Gravel
- Gravimetric analysis
- Graywacke
- Greasy (luster)
- Greenschist(facies)
- Greenschist(rock)
- Greenstone
- Ground mass
- Group (of elements)
- Group(of minerals)
- Gypsum plate
- Gyroid
-
H
- Habit
- Hackly
- Halide
- Halogen
- Hanawalt method
- Hand specimen
- Hard radiation
- Hardness
- Hauy’s law
- Heavy liquid
- Heft
- Heisenberg uncertainty principle
- Hermann-Mauguin symbol
- Hexagonal
- Hexagonal (system)
- Hexagonal closest packing
- Hexagonal packing
- Hexahedron
- Hexanet
- Hexoctahedron
- High symmetry
- Hornfels
- Host rock
- Hydration reaction
- Hydrogen bond
- Hydrolysate
- Hydrolysis reaction
- Hydrothermal
- Hydrothermal fluids
- Hydrothermal ore deposit
- Hypothesis
- Hyrdroxide
-
I
- Idiochromatic
- Igneous
- Immersion method
- Immiscibility
- Impurity defect
- Inclined extinction
- Incompatible element
- Index mineral
- Index of refraction
- Index(indices)
- Index(X-ray pattern)
- Inductively coupled plasma (ICP)
- Inductively coupled plasma mass spectrometry (ICP-MS)
- Inert gas
- Infrared light
- Infrared spectroscopy
- Inorganic
- Inosilicates
- Integral molecules
- Intensive variable
- Interfacial angle
- Interference
- Interference colors
- Intergranular fluid
- Intergrowth
- Intermediate igneous rock
- Internal energy (E)
- Internal reflection
- Interstice
- Intrusive rock
- Invariant point
- Inversion
- Inversion center
- Ion
- Ionic bond
- Ionic charge
- Ionic crystal
- Ionic microprobe
- Ionic radius
- Iridescence
- Iron formation
- Irregular (fracture)
- Island silicate
- Isochemical
- Isochrome
- Isodesmic
- Isogonal
- Isograd
- Isogyre
- Isolated tetrahedral silicates
- Isomorphous series
- Isostructural
- Isotope
- Isotropic
-
J
- Jagged
- Japanese law twin
- Japanese twin
- Jet
- Jewel
- Jeweler
- Jewelry
- Join (phase diagram)
- Jolly balance
-
K
- K
- K (alpha) radiation
- K-spar
- Karat
- Karst
- Kimberlite
- Komatiite
- Kt
-
L
- Labradorescence
- Lamellar
- Lanthanide
- Laterite
- Latite
- Lattice
- Lattice point
- Laue equations
- Laue method
- Lava
- Lava flow
- Law of Bravais
- Law of definite proportions
- Law of rational indices
- Law of thermodynamics
- Laws(scientific)
- Lawsonite-albite (facies)
- Layer silicates
- Leach
- Left handed
- Length fast
- Length slow
- Lime kiln
- Limestone
- Line defect
- Lineage structure
- Linear (coordination)
- Lineation
- Liquidus
- Lithic fragment
- Lithification
- Lithophile
- Lode deposit
- Low symmetry
- Lower polarizer
- Luminescence
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-
M
- Macroscopic property
- Mafic
- Magma
- Major element
- Malleable
- Mammillary
- Mannebach twin
- Marble
- Marl
- Mass number
- Mass spectrometry
- Massive
- Matrix
- Matte
- Mechanical weathering
- Melatope
- Mesodesmic
- Metabasite
- Metal (element)
- Metallic bond
- Metallic element
- Metallic luster
- Metamorphic
- Metamorphic facies
- Metamorphic grade
- Metamorphic series
- Metamorphic zone
- Metamorphism
- Metapelite
- Metapsammite
- Metasomatism
- Metastable (thermodynamics)
- Metastable equilibrium
- Micaceous
- Micrite
- Microscopic property
- Migmatite
- Miller index (indices)
- Mineral
- Mineral class
- Mineral formula
- Mineral group
- Mineralogy
- Minor element
- Mirror plane
- Miscibility
- Miscibility gap
- Mississippi valley-type deposit
- Mode (igneous rock)
- Mohs’ hardness scale
- Molar volume
- Mole
- Monochromatic radiation
- Monoclinic
- Monoclinic (system)
- Monovalent
- Monzonite
- Mossbauer spectroscopy
- Mother lode
- Motif
- Mud
- Mudstone
-
N
- Nacre
- Nacreous
- Native
- Native elements
- Natural
- Natural glass
- Nepheline syenite
- Nesosilicates
- Network silicates
- Neutron
- Nitrate
- Nitrates
- Nitrates Group
- Nitric acid
- Noble gas
- Nodular
- Nodule
- Non-crystalline
- Non-metallic
- Nonbrittle
- Nonmetal
- Nonmetal (native element)
- Nonmetallic (elements)
- Nonmetallic luster
- Nonopaque (mineral)
- Nonprimitive
- Nonspecial angle
- Normalization
- Nuclei
- Nucleus
- Nugget
- Numerical aperture
-
O
- O ray
- Obsidian
- Obtuse bisectrix
- Obtuse bisectrix figure (Bxo)
- Octahedral (cleavage)
- Octahedral (coordination)
- Octahedron
- Ocular
- Olivine
- Opalescence
- Opaque
- Open form
- Operation (symmetry)
- Operator (symmetry)
- Optic axis
- Optic axis (OA) figure
- Optic normal
- Optic normal figure (ON)
- Optic plane
- Optic sign
- Orbital (atomic)
- Order of diffraction
- Ordinary ray (O ray)
- Ore
- Ore deposit
- Ore grade
- Ore mineral
- Organic
- Orthogonal
- Orthonet
- Orthopyroxene
- Orthorhombic
- Orthorhombic (system)
- Orthoscopic illumination
- Orthosilicates
- Ostwald ripening
- Out-of-phase
- Oxidation
- Oxide
- Oxidize
-
P
- Paired tetrahedral sillicates
- Paragenesis
- Parallel extinction
- Paramagnetism
- Parent isotope
- Partial crystallization
- Partial melting
- Parting
- Pauling’s rules
- Pearly luster
- Pedion
- Pegmatite
- Pelite
- Penetration twin
- Pericline twin
- Peridotite
- Period (of elements)
- Periodic chart
- Petrogenesis
- Petrographic microsocpe
- Petrography
- Phaneritic
- Phase diagram
- Phase rule
- Phenocryst
- Phosphate (mineral)
- Phosphate (radical)
- Phosphorescence
- Phosphorite
- Phyllite
- Phyllosilicates
- Piezoelectric
- Pinacoid
- Pipe
- Pisolitic
- Placer
- Planck’s law
- Plane defect
- Plane lattice
- Plane polarized
- Plaster of paris
- Platy (cleavage)
- Platy (crystal)
- Play of color
- Pleochroism
- Plumose
- Plutonic rock
- Point defect
- Point group
- Point symmetry
- Polarized (ion)
- Polarized (wave)
- Polarizing light microscope
- Pole
- Polychromatic
- Polyhedron
- Polymer
- Polymerization
- Polymorphs
- Polysynthetic twinning
- Porphyritic
- Porphyroblast
- Porphyry (igneous rock)
- Porphyry (ore deposit)
- Portland cement
- Powder diffraction
- Powder Diffraction file (PDF)
- Precambrian shield
- Precious metals
- Precipitate
- Prehnite-pumpellyite (facies)
- Primary mineral
- Primitive
- Principal axis
- Principle of parsimony (Pauling’s fifth rule)
- Prism
- Prismatic (cleavage)
- Prismatic (crystal)
- Prograde metamorphism
- Prograde reactions
- Progressive metamorphism
- Proper rotation axis
- Prorcelain
- Proton
- Psammite
- Pseudohexagonal
- Pseudosymmetry
- Pycnometer
- Pyralspite
- Pyramid
- Pyramid cleavage
- Pyritohedron
- Pyroelectric
- Pyroxene quadrilateral
- Pyroxene-hornfels (facies)
- Pyroxenite
-
Q
- Quarried
- Quarries
- Quarry
- Quartz group
- Quartz plate
- Quartz wedge
- Quartzite
- Quartzose
-
R
- Radiating
- Radical
- Radioactivity
- Radioisotope
- Radius ratio principle (Pauling’s first rule)
- Raman spectroscopy
- Rare earth elements
- Recentrant angle
- Recrystallization
- Recrystallize
- Reduce
- Reduction
- Reflection (light)
- Reflection (symmetry)
- Refracted light microscopy
- Refraction
- Refractive index
- Refractive index oil
- Refractometer
- Regional metamorphism
- Regular polyhedron
- Relative hardness
- Relief
- Remnant heavy isotope
- Reniform
- Reserves
- Residual (mineral)
- Residual (phase)
- Residuum
- Resinous
- Resistate
- Retardation
- Reticulated
- Retrograde metamorphism
- Retrograde reactions
- Rhomb
- Rhombohedral (point groups)
- Rhombohedral plane lattice
- Rhombohedron
- Rhyolit
- Rietveld method
- Right handed
- Ring silicates
- Rotation
- Rotation axis
- Rotational symmetry
- Rotoinversion
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-
S
- Saccharoidal
- Saline
- Saline deposit
- Saline lake
- Salinity
- Salt
- Salt dome
- Salt Lake
- Sand
- Sandstone
- Sanidinite (facies)
- Sassuritization
- Scalenohedral
- Scalenohedron
- Scales
- Scaly
- Scanning electron microscope(SEM)
- Scattering
- Scepter
- Schiller
- Schist
- Schistosity
- Schottky defect
- Schrodinger wave model
- Scientific theory
- Sclerometer
- screw axis
- Screw dislocation
- Second setting
- Secondary
- Secondary electrons
- Secondary ion mass spectrometry (SIMS)
- Secondary mineral
- Secondary radiation
- Sectile
- Sectility
- Sediment
- Sedimentary
- Sedimentary rock
- Sedimentation process
- Selenide
- Selenides
- Selvage
- Semi-metal
- Semi-metallic
- Semi-metallic elements
- Semi-precious
- Semi-precious gemstone
- Semimetal (element)
- Semimetal (native element)
- Series
- Serpentinite
- Setting
- Shaft
- shale
- Sheaflike
- Sheet silicates
- Sheetrock
- Shelly fracture
- Shock metamorphism
- Shortwave
- sialic
- Siderophile
- Sign of elongation
- Silica
- Silica gel
- Silica group
- Silicate
- Silicic
- Silky
- silt
- Siltstone
- simple substitution
- simple twin
- Single chain silicates
- skarn
- Slag
- Slaked lime
- Slate
- Slow ray
- snell’s law
- Soft radiation
- Solid solution
- solid solution series
- solid state diffusion
- solid-solid reaction
- solidus
- solubility
- Solvus
- Sorosilicates
- Space group
- Space group operators
- Space symmetry
- Sparry
- Special angles
- Special form
- Special point
- Specific gravity (G)
- Spectrometer
- Spectroscopy
- Sphenoid
- Square net
- stability field
- stable (thermodynamics)
- stable equilibrium
- stable isotope
- Stable mineral
- Stacking fault
- Stalactitic
- stellated
- Steno’s law
- Stereo diagram
- Stoichiometry
- strain energy
- Streak
- Striation (twin)
- Subgroup
- subhedral
- Submetallic luster
- Substage
- Sulfate (mineral )
- Sulfate (radical)
- sulfide
- Sulfosalt
- Supergene
- swelling clay
- Syenite
- symmetrical extinction
- symmetry (crystal)
- symmetry element
- Symmetry operation
- syngenetic
- system (chemical)
-
T
- Tabular
- Tailings
- Tarnish
- Tectosilicates
- Telluride
- Tellurides
- Tenacity
- Tenebrescence
- Tenebrescent
- Terminated
- Terminating face
- Termination
- Ternary solution
- Tetartoid
- Tetragonal
- Tetragonal (system)
- Tetragonal packing
- Tetragonal trisoctahedron
- Tetrahedral
- Tetrahedral (coordination)
- Tetrahedron
- Tetrahedron (silica)
- Tetravalent
- Texture
- Thermal
- Thermodynamics
- Thermoluminescence
- Thermoluminescent
- Thin section
- Thumbnail
- Tie line
- Till
- Tonalite
- Tourmaline group
- Trace element
- Trachyte
- Transformation
- Transition element
- Transition metal
- Translating
- Translation
- Translucency
- Translucent
- Transmitted light microscopy
- Transparency
- Transparent
- Trap rock
- Trapezohedra
- Trapezohedral
- Trapezohedron
- Trapiche
- Traprock
- Travertine
- Triangular (coordination)
- Triboluminescence
- Triboluminescent
- Trichroic
- Trichroism
- Triclinic
- Triclinic (system)
- Trigonal
- Trigonal (system)
- Trilling
- Trillion
- Trioctahedral
- Triplet
- Trisoctahedral
- Trisoctahedron
- Trivalent
- True phosphates
- Trunk
- Tube test
- Tuberose
- Tufa
- Tufacious spring
- Tuff
- Tumble
- Tumbled
- Tumbler
- Tumbling
- Tungstates
- Tungstates and Molybdates
- Tungstens
- Twain domain
- Twin
- Twin lamellae
- Twin law
- Twin plane
- Twinned
- Twinned crystal
- Twinning
- Type locality
-
U
- Ugrandite
- Ultrabasic
- Ultramafic
- Ultraviolet
- Ultraviolet lamp
- Ultraviolet light
- Uneven
- Uneven fractrure
- Uneven fracture
- Uniaxial
- Unit cell
- Unit cell parameters
- Univariant line
- unmixing
- Unpolarized
- Unstable
- Unstable (thermodynamics)
- Unstable isotope
- upper polarizer
- UV
- UV lamp
-
V
- Valence
- Valence electron
- Vanadates
- Vander Waals bond
- Vapor
- Variable formula
- Variety
- Vein
- Vent
- Venting
- Vermeil
- Verneuil process
- Verneuil technique
- Vesicle
- Viscosity
- Visible light spectroscopy
- Vitreous
- Vitreous luster
- Vitriol
- Volatilize
- Volcanic
- Volcanic rock
- Volcanism
- Volcano
- Volumetric analysis
- Vug
- Vulcanism
-
W
- Waterworn
- Wave front
- Wavelength dispersive X-ray spectroscopy (WDS)
- Waxlike luster
- Waxy
- Waxy luster
- Weathered
- Weathering
- Wet chemical analysis
- Wheat sheaf
- Wheat sheaves
- White light
- White radiation
- Whiteschist
- Widmanstatten lines
- Widmanstatten pattern
- Wires
- Wiry
- Wolframates
-
X
- X-radiation
- X-ray
- X-ray diffraction
- X-ray fluorescence (XRF)
- Xenolith
-
Z
- Zeolite
- Zeolite (facies)
- Zeolite group
- Zone (compositional)
- Zone (matamorphic)
- Zone axis
- Zoned
- Zoning
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