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Glossary of Terms

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 ALL

All Abrasive Eclogite Mafic Reflective Absolute hardness Effervesce Magma Refract Absorption spectra Effervescence Magmatic Refraction Absorption spectrum Effervescent Magmatite Refractive index Accessory mineral Effloresce Magmatite rock Refractive indices Acicular Efflorescence Magnesia Refractometer Acid Efflorescent Magnet Relative density Acid test Eightling Magnetic Reniform Activator Elastic Magnetic field Repeated twinning Adamantine Electric Magnetism Repeated twins Adularescence Electrical Malleability Replace Adularescent Electricity Malleable Replaced Aggregate Electromagnetic radiation Mammilary Replacement Alkali Electrometallurgy Mantle Replacing Alkali Feldspar Electron Marble Resinlike luster Alkaline Element Marquise Resinous Alloy Elements Massive Resinous luster Alloyed Elongated Matrix Resistance Alloying Embedded crystal Melting point Resistant Alluvial Emerald Mesothermal vein Reticulated Alluvial deposit Emerald cut Metal Rhomb Alluvion Empirical formula Metallic Rhomb-scalenohedron Alluvium Enaniotropic Metallic elements Rhombic Alpha rays Encrust Metallic luster Rhombic dodecahedron Alpine Encrustation Metallurgy Rhombohedral Alpine cavity Encrusting Metamict Rhombohedral cleavage Alter End member Metamiction Rhombohedron Alteration Engrave Metamorphasized Rhyolite Altered Engraving Metamorphic Rift Amalgam Environment Metamorphic rock Ring silicates Amber Epimorph Metamorphism Rock Ammonia Epitaxy Metamorphosed Rock crystal Ammonium hydroxide Epithermal vein Metasilicate chains Rock shop Amorphous Epsom salts Metasilicate rings Rock show Amphibole Equant Metasilicates Rock-forming mineral Amphibole group Equidimensional Metasomatically Rosette Amygdule Eroded Metasomatism Rough Anhydrous Erosion Metastability Round Anhydrous borates Euhedral Metastable Rust Anhydrous sulfates Evaporate Meteor Rusting Anion Evaporation Meteoric Rutilated Anisotropic Evaporite Meteorite Rutile twin Anisotropism Evaporite deposit Meteoroid Saccharoidal Anticline Even Mica Saline Antimonides Even fracture Mica group Saline deposit Apatite group Exfoliate Micaceous Saline lake Aqua fortis Extract Microcrystal Salinity Aqua regia Extraction Microcrystalline Salt Aqueous Extraterrestrial Micromount Salt dome Aragonite group Extrusive Mine Salt Lake Arborescent Face Miner Sand Argentiferous Facet Mineral Sandstone Argillacious Faceted Mineral group Sassuritization Arid Faceting Mineral series Scalenohedral Arsenates Fault Mineral show Scalenohedron Arsenide Feldspar Mineralogical Scales Arsenides Feldspar group Mineralogically Scaly Asbestos Feldspathoid Mineralogist Scepter Asbestos amphibole Feldspathoid group Mineralogy Schiller Asterism Felsic Mineraloid Schist Asteroid Ferrian Mining Sclerometer Asymmetrical Ferroginous Mixed crystal Secondary Atom Ferromagnetic Mohs Hardness scale Secondary mineral Atomic Ferromagnetism Mohs Scale Sectile Atomic structure Ferrous Molecular Sectility Atomical Fiber Molecular arrangement Sediment Atomical arrangement Fibrous Molecular structure Sedimentary Atomically Filiform Molecule Sedimentary rock Auriferous Fire Mollusk Sedimentation process Autochthonous Fishtail twin Molten Selenides Aventurescence Fissile Molten rock Selvage Aventurization Fissility Molybdates Semi-metal Axes Flaky Monochromatic Semi-metallic Axis Flame test Monoclinic Semi-metallic elements Axis of symmetry Flat Monotropic Semi-precious Band Flaw Mother of pearl luster Semi-precious gemstone Banded Flawless Mother rock Series Banding Flexibility Mother-of-pearl Setting Basal Flexible Mottled Shaft Basal cleavage Flexible and elastic Multicolored Shale Basal pinacoid Flexible but inelastic Multiple oxides Sheaflike Basalt Floater Mylonite Sheet silicates Base Floater crystal Nacre Shelly fracture Basic Flow banding Nacreous Shortwave Batholith Flowstone Native Silica Bead test Fluoresce Native elements Silica gel Bed Fluorescence Natural glass Silica group Bedding Fluorescent Nepheline syenite Silicafied Bedrock Fluorescent lamp Nesosilicates Silicate Belemnite Fluorite twin Neutron Silicates Beta rays Fluvial Nitrates Siliceous Bipyramid Fluvial deposit Nitric acid Silky Bipyramidal Flux Nodular Silky luster Bipyramidal hexagon Fold Nodule Sill Bipyramidal hexagonal Foliated Non-crystalline Silt Bipyramidal hexagonal prism Form Non-metallic Simple oxides Birefringence Formula Non-metallic elements Simple sulfides Birthstone Fossil Nonbrittle Sinter Bitumen Fossiliferous Nonmetal Sixling Bituminous Fossilization Nuclei Skarn Bladed Fossilize Nucleus Skeletal Blowpipe test Fossilized Nugget Slab Boiling point Fourling Obsidian Slag Bond Fracture Occurrence Slate Borate Framework silicates Ochre Smelt Borates Freezing point Octacube Smooth fracture Borax Friable Octagon Snakehead Botryoid Fulgurite Octahedra Soil Botryoidal Fumarole Octahedral Solid solution Boule Fusion Octahedral cleavage Solidify Brass Gabbro Octahedral cube Solubility Breccia Gamma rays Octahedron Soluble Brecciated Gangue Oil of vitriol Solution Brilliant cut Gangue material Oiling Solvent Brilliant luster Garnet Group Oily luster Sorosilicates Brine Garnet paper Oolite Spar Brittle Geiger counter Oolitic Specific gravity Bronze Gem Opalesce Specimen Brownspar Gemminess Opalescence Spectra Bullion Gemmy Opalescent Spectral Cabochon Gemological Opalization Spectrograph Calcareous Gemologist Opalize Spectrometer Calcic Gemology Opaque Spectrophotometer Calcite group Gemstone Open Pit Spectroscope Cameo Geode Optical Spectroscopy Capillary Geologic Optical properties Spectrum Carat Geological Optics Sphenoidal Carbonate Geologist Ore Spherical Carbonates Geology Organic Spherulite Carlsbad twin GIA Orthorhombic Spherulitic Carved Gilson Process Orthosilicates Spinel twin Carving Glass Outcrop Spinel-law twin Cassiterite twin Glassy luster Oval Splendent luster Cast Glauber's salt Overtone Splinter Casting Globular Oxidation Splintery Cat's eye Gneiss Oxidation minerals Splintery fracture Cat's eye effect Goniometer Oxidation zone Square Cation Gossan Oxide Stable Catseye Grain Oxides Stalactite Cave Grainy Oxidize Stalactitic Cavern Gram Oxidized Stalactitically Cavities Granite Oxidized zone Stalagmite Cavity Granitic Paleontologist Stalagmitic Cementation zone Granular Paleontology Staurolite twin Center of symmetry Gravel Pallasite Stellate Chain silicates Gravity Panning Stock Chalk Greasy Paragenesis Stone Chatoyancy Greasy luster Paramagnetic Strahler Chatoyant Group Paramagnetism Strata Chemical Grouping Paramorph Stratification Chemical bond Habit Parting Stratum Chemical composition Hackly Patina Streak Chemical formula Halides Pear Streak plate Chemical structure Halogen Pearl Striated Chemist Hard water Pearly Striations Chemistry Hardness Pearly luster Structural Chondrite Hardness testing kit Pegmatite Structure Chondrules HCl Pendant Stubby Chromates Heart Penetration Stud Chrysoberyl twin Heat treated Penetration twin Sub-metallic Clast Heat treating Penetration twinning Subconchoidal Clay Heat treatment Pentagonal dodecahedron Subconchoidal fracture Cleavable Hemimorphic Percussion figure Subgroup Cleavage Hemispherical Peridotite Sublimate Cleavage angle Hexagon Periodic table Sublimation Cleavage face Hexagonal Perky box Submetallic Cleavage fragment Hexagonal bipyramid Petrifaction Sulfate Cleavage surface Hexagonal bipyramidal Petrification Sulfates Cleave Hexagonal shape Petrified Sulfide Cleaved Hexoctahedral Petrified wood Sulfides Cleaved surface Hexoctahedron Petrographer Sulfosalts Cleaving Hopper Petrographic microscope Sulfuric acid Clinopinacoid Hornfels Petrography Surrounding rock Clinopinacoidal Host mineral Petroleum SW Cluster Hot spring Petrologist Swallowtail twin Coal Hydrate Petrology Syenite Coating Hydrated pH Symmetrical Cockscomb Hydration Phantom Symmetry Color Hydrocarbons Phantom growth Synthesized Columnar Hydrochloric acid Phenocryst Synthetic Composition Hydrofluoric acid Phosphate Synthetic gem Compound Hydrometallurgy Phosphates Tabular Concentric Hydrothermal Phosphoresce Tarnish Conchoidal Hydrothermal Method Phosphorescence Tectosilicates Concretion Hydrothermal Vein Phosphorescent Tellurides Concretionary Hydrous Phyllosilicates Tenacity Conductivity Hydrous borates Physicist Tenebrescence Conductor Hydrous sulfates Physics Tenebrescent Conglomerate Hydroxides Piezoelectric Terminated Contact metamorphism Hydroxyl Piezoelectricity Termination Contact twinning Hygroscopic Pinacoid Tetragonal Coprolite Hygroscopy Pinacoidal Tetragonal trisoctahedron Coral Hypothermal vein Pinacoidal cleavage Tetrahedral Core Icosahedra Pipe Tetrahedron Coxcomb Icosahedral Pisolite Texture Crater Icosahedron Pisolitic Thermal Crazing Icosi-tetrahedron Pit Thermoluminescence Crumbly Idiochromatic Pitchlike luster Thermoluminescent Crust Igneous Pitchy Thumbnail Crusty Igneous rock Placer Tourmaline group Cryptocrystalline IMA Placer deposit Transformation Crystal Impure Plagioclase twin Translucency Crystal aggregate Impurities Plane Translucent Crystal angle Impurity Plane of symmetry Transparency Crystal class In Situ Planetoid Transparent Crystal face Included Plate Trap rock Crystal group Inclusion Plate-like Trapezohedra Crystal habit Incrust Plated Trapezohedral Crystal lattice Incrustation Platy Trapezohedron Crystal structure Incrusting Playa Traprock Crystal symmetry Index of refraction Pleochroic Triboluminescence Crystal system Indiscernible Pleochroism Triboluminescent Crystalline Infiltration Plug Trichroic Crystallization Ingot Plumose Trichroism Crystallize Inorganic Plutonic Triclinic Crystallized Inosilicates Plutonic rock Trigonal Crystallographer Insoluble Pocket Trilling Crystallographically Intaglio Point Trillion Crystallography Intermediary Polished Triplet ct Intermediary Member Polychromatic Trisoctahedral Cube Intrusion Polyhedron Trisoctahedron Cubic Intrusive Polymorph True phosphates Cubic cleavage Intrusive rock Polymorphism Trunk Cubic octahedron Ion Polymorphous Tube test Cubic system Iridesce Polysynthetic twinning Tuberose Cuboctahedral Iridescence Polysynthetic twins Tufa Culet Iridescent Polytype Tufacious spring Cut Irradiate Porcelaneous Tuff Cyclosilicates Irradiated Porous Tumbled Cymophane effect Irradiating Porphry Tumbler Decomposition Irradiation Porphyritic Tungstates Decrepitation Isometric Potash feldspar Tungstates and Molybdates Dehydration Isomorph Potassium feldspar group Tungstens Dendrite Isomorphism Potspar Twin Dendritic Isomorphous Precious gemstone Twinned Density Isotropic Precious metal Twinned crystal Deposit Isotropization Precious stone Twinning Detrital Isotype Precipitating Type locality Detritus Isotypism Precipitation Ultrabasic Devitrification Isotypous Primary Ultramafic Devitrify Ivory Primary mineral Ultraviolet Diabase Jagged Princess Ultraviolet lamp Diagenesis Japanese law twin Prism Ultraviolet light Diamagnetic Japanese twin Prismatic Uneven Diamagnetism Jet Prismatic cleavage Uneven fracture Diamondlike luster Jewel Prospect Unstable Diaphaneity Jeweler Prospecting UV Diaphanous Jewelry Prospector UV lamp Diapir K Proton Vanadates Dichroic K-spar Pseudo Variable formula Dichroism Karat Pseudo-octahedral Variety Diffract Karst Pseudo-octahedron Vein Diffraction Kimberlite Pseudocube Vent Diffused Kt Pseudocubic Venting Diffusion treatment Lab Pseudohexagon Vermeil Dike Laboratory Pseudohexagonal Verneuil process Dimorph Labradoresce Pseudomorph Vesicle Dimorphous Labradorescence Pseudomorphed Vitreous Diorite Labradorescent Pseudomorphism Vitreous luster Dipyramid Laccolith Pt Vitriol Dipyramidal Lamellar Pure Volatilize Disilicates Laminated rock Pyncnometer Volcanic Dispersing Lanthanides Pyramidal Volcanic rock Dispersion Lapidaries Pyritohedral Volcanism Dodecahedral Lapidary Pyritohedron Volcano Dodecahedron Lattice Pyroelectric Vug Dollar Lava Pyroelectricity Vulcanism Dolomite Lenticular Pyrometallurgy Waterworn Dolostone Light Pyrosilicates Waxlike luster Double refraction Light reflection Pyroxene Waxy Doublet Light refraction Pyroxene group Waxy luster Doubly terminated Limestone Quarried Weathered Druse Litmus paper Quarries Weathering Drusy Locality Quarry Wheat sheaf Druzy Lode Quartz group Wheat sheaves Dry lake Longwave Quartzite White light Dry lake deposit Loupe R.E.E. Widmanstatten lines Ductile Lubricant Radial Widmanstatten pattern Ductilibility Luminesce Radiating Wires Ductility Luminescence Radiation Wiry Dull Luminescent Radical Wolframates Dull luster Luster Radioactive X-ray Dump Lustrous Radioactivity Xenolith Dusting LW Rare earth Zeolite Earth science Macle Rare earth elements Zeolite group Earthy Macrocrystalline Reflection Zoning Earthy luster