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Colorado, USA

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The eastern third of the state consists of the high plains and piedmont areas. These Tertiary and Cretaceous sedimentary rocks are not particularly mineralogically diverse, but have provided areas for oil production. Running north-south through the central portion of the state are the Rocky Mountains. Gold, silver, base metals were all important mineral products of this area of the state. In the southwestern portion of the state are large volcanic calderas that also have been important mineral producers in the San Juan Mountains. The western portion of the state consists of the plateau country consisting of sedimentary rocks. Mineral production in the southwest area was primarily for uranium and vanadium minerals while potash and oil shale are found in the northwest.

Mining became important with the discovery of gold in 1858.

The Front Range mineral belt is characterized throughout by base-metal ores containing appreciable amounts of silver and gold. Except for the eastward-trending tungsten belt between Nederland and Boulder, the ores in the mineral belt northeast of Idaho Springs have been chiefly valuable for their gold content. To the south,west the ores are chiefly valuable for their base-metal and silver contents, except in part of the Breckenridge and Tiger districts where gold is the most important metal.

Geologic Map courtesy USGS

Mindat Articles

Colorado Gem and Mineral shows by Larry Maltby


Mineral List

Mineral list contains entries from the region specified including sub-localities

Abelsonite

Abernathyite

Acanthite

Actinolite

Adamite

Aegirine

Aegirine-augite

'Aeschynite'

Aeschynite-(Ce)

Aeschynite-(Y)

Aikinite

Akaganeite

Åkermanite

Alabandite

'Alaskaite'

Albite

var: Andesine

var: Cleavelandite

var: Oligoclase

var: Oligoclase-Albite

'Albite-Anorthite Series'

Algodonite

Allanite-(Ce)

'Allanite Group'

Allanite-(Y)

Allargentum

Alleghanyite

Allophane

Alluaudite

Almandine

'Almandine-Spessartine Series'

Altaite

Aluminite

Aluminocopiapite

Alum-(K)

Alunite

Alunogen

'Amber'

Amblygonite

Amesite

'Amphibole Supergroup'

'var: Uralite'

Analcime

Anatase

'Ancylite'

Ancylite-(Ce)

Andalusite

Andersonite

'Andorite'

Andradite

var: Melanite

var: Topazolite

Anglesite

Anhydrite

Ankerite

Annabergite

Annite

Anorthite

var: Bytownite

var: Labradorite

'Anorthoclase'

Ansermetite

Anthophyllite

Antigorite

Antimony

Antlerite

'Apatite'

'var: Carbonate-rich Apatite'

Apjohnite

'Apophyllite'

Aragonite

var: Flos Ferri

var: Plumboan Aragonite

var: Zincian Aragonite

Arfvedsonite

Argentopyrite

Argentotennantite

Argyrodite

Arsenic

Arseniosiderite

Arsenolite

Arsenopyrite

'Asbestos'

Astrophyllite

Atacamite

Augite

var: Titanian Augite

Aurichalcite

Austinite

var: Cuprian Austinite

Autunite

Azurite

Baddeleyite

Bariandite

Bariopharmacosiderite

Barnesite

Barylite

Baryte

Barytocalcite

'Basaltic Hornblende'

Bassetite

'Bastnäsite'

Bastnäsite-(Ce)

Bastnäsite-(La)

Baumhauerite

Bayldonite

Bayleyite

Bazzite

'Beaverite-(Cu)'

Becquerelite

'Beegerite'

Beidellite

Benjaminite

'Bentonite'

Berryite (TL)

Berthierine

Berthierite

Bertrandite

Beryl

var: Alkali-beryl

var: Aquamarine

var: Goshenite

var: Morganite

Betekhtinite

Beudantite

Beusite

Beyerite

Bianchite

Bindheimite

'Biotite'

'var: Manganophyllite'

Birnessite

Bismite

Bismuth

Bismuthinite

Bismutite

'Bitumen'

'Blaubleibender Covellite'

Blödite

Bluestreakite (TL)

Bobjonesite

Boltwoodite

Bornite

var: Argentiferous Bornite

Boulangerite

Bournonite

Brackebuschite

Brandholzite

Brannerite

Braunite

Briartite

Britholite-(Ce)

Britholite-(Y)

Brochantite

Brockite (TL)

Bromargyrite

Brookite

Brucite

Brugnatellite

Buckhornite (TL)

Burbankite

Burkeite

Burroite

Bustamite

Butlerite

Cacoxenite

'Calamine'

Calaverite

Calciodelrioite (TL)

Calciosamarskite

Calcite

var: Ferroan Calcite

var: Manganoan Calcite

Calcjarlite

Calderónite

Caledonite

Calomel

Cameronite (TL)

Cancrinite

Canfieldite

Carbonatecyanotrichite

'Carbonite (of Heinrich)'

Carminite

Carnallite

Carnotite (TL)

Carrollite

Caryopilite

Cassiterite

Cattierite

Cebollite (TL)

Celadonite

Celestine

Cerianite-(Ce)

Cerite-(Ce)

Cerussite

Cervelleite

'Chabazite'

Chabazite-Ca

Chalcanthite

Chalcoalumite

Chalcocite

Chalcomenite

Chalconatronite

Chalcophanite

Chalcopyrite

Chalcosiderite

Chalcostibite

Chamosite

var: Thuringite

'Charcoal'

'Chevkinite Group'

Chlorapatite

Chlorargyrite

var: Bromian Chlorargyrite

'Chlorite Group'

Chloritoid

Chondrodite

Chromite

Chrysoberyl

Chrysocolla

'Chrysoprase'

Chrysotile

'Cimolite'

Cinnabar

Clausthalite

'Clays'

'Clinochalcomenite'

Clinochlore

var: Pennine

Clinoenstatite

Clinohumite

'Clinoptilolite'

'Clinopyroxene Subgroup'

Clinosafflorite

Clinozoisite

Cobaltite

Coesite

Coffinite (TL)

Coloradoite (TL)

'Columbite'

'var: Titanocolumbite'

Columbite-(Fe)

'Columbite-(Fe)-Columbite-(Mn) Series'

Columbite-(Mn)

'Columbite-Tantalite'

Colusite

Compreignacite

Conichalcite

Cookeite

Copiapite

Copper

'Copper Stain'

Coquimbite

Cordierite

Corkite

Cornubite

Coronadite

Corrensite

Corundum

var: Sapphire

Corvusite (TL)

Cosalite

Covellite

Cowlesite

Crandallite

Creedite (TL)

Cristobalite

Crocoite

'Crossite'

Cryolite

Cryptomelane

Cubanite

Cummingtonite

Cuprite

var: Chalcotrichite

Cuprobismutite (TL)

Cupropavonite (TL)

Cuproroméite

Cuprotungstite

Curite

Cyanotrichite

Danalite

Dawsonite

Delrioite (TL)

Descloizite

var: Dechenite

Devilline

Diadochite

Diamond

Diaspore

Dickite

Dickthomssenite

Digenite

Diopside

var: Chromian Diopside

Djurleite

Dolomite

var: Ferroan Dolomite

var: Manganoan Dolomite

Doloresite (TL)

Domeykite

Dravite

'Dravite-Schorl Series'

Dufrénoysite

Duftite

Dumontite

Dumortierite

Duttonite (TL)

Dypingite

Dyscrasite

Edenite

Elbaite

Elpasolite (TL)

Emmonsite

Emplectite

Empressite (TL)

Enargite

Enstatite

var: Bronzite

Epidote

var: Withamite

Epistilbite

Epsomite

'Erionite'

Erythrite

Eskimoite

Eucairite

Euclase

Euxenite-(Y)

Famatinite

Fayalite

'Feldspar Group'

'var: Perthite'

Felsőbányaite

Ferberite

'Fergusonite'

Fergusonite-(Y)

Fernandinite

Ferrihydrite

Ferrimolybdite

Ferrisicklerite

Ferro-hornblende

Ferroselite

Ferrotellurite (TL)

'Ferro-tschermakite'

Fersmanite

Fersmite

Fervanite (TL)

Fibroferrite

Fizélyite

Florencite-(Ce)

'Fluocerite'

Fluocerite-(Ce)

Fluorannite

Fluorapatite

var: Carbonate-rich Fluorapatite

var: Mn-bearing Fluorapatite

Fluorapophyllite-(K)

Fluorbritholite-(Ce)

Fluorite

var: Yttrocerite

var: Yttrofluorite

Fluorophlogopite

Fluoro-riebeckite

Forsterite

Fourmarierite

Franklinite

Freibergite

Freieslebenite

Friedelite

Friedrichite

Frohbergite

Fülöppite

'Gadolinite'

Gadolinite-(Ce)

Gadolinite-(Y)

Gahnite

Galena

var: Argentiferous Galena

var: Selenian Galena

Galenobismutite

'Garnet'

'Garnierite'

Garronite-Ca

Gatewayite (TL)

Gearksutite

Gedrite

Gehlenite

Genthelvite (TL)

Geocronite

Germanite

Gersdorffite

Gibbsite

'Glass'

Glaucodot

Glauconite

Goethite

Gold

var: Electrum

'Gold Amalgam'

Goldfieldite

Gonnardite

Goslarite

Goyazite

Graftonite

Grantsite

Graphite

Grayite

Greenockite

Grossular

var: Hessonite

Grunerite

Guettardite

'Guitermanite'

'Gummite'

Gunningite

'Gunnisonite'

Gunterite (TL)

Gustavite

Gypsum

var: Alabaster

var: Satin Spar Gypsum

var: Selenite

Häggite

Halite

'Halloysite'

Halotrichite

Hammarite

Harmotome

Hastingsite

Hausmannite

Haüyne

var: Lazurite

Hawleyite

Heazlewoodite

Hedenbergite

Helvine

Hematite

var: Martite

var: Specularite

Hemimorphite

Hendersonite (TL)

Hercynite

Hessite

Hetaerolite

Heterosite

'Heterosite-Purpurite Series'

'Heulandite'

Heulandite-Ca

Heulandite-Na

Hewettite

Hexahydrite

Heyrovskýite

Hinsdalite (TL)

Hisingerite

Hodrušite

'Högbomite'

Hollandite

'Hornblende'

Hübnerite

Huemulite

Hughesite (TL)

Humite

Hummerite (TL)

Huntite

Hyalophane

Hydrobiotite

Hydrohetaerolite (TL)

Hydrokenoelsmoreite

var: Ferritungstite

Hydrokenoralstonite

Hydromagnesite

Hydropascoite (TL)

Hydroxylapatite

var: Carbonate-rich Hydroxylapatite

Hydrozincite

'Hypersthene'

Ianthinite

Ice

Idaite

'Iddingsite'

Ilesite (TL)

'Illite-1M'

'Illite-1Md'

'Illite-2M'

Ilmenite

var: Picrotitanite

Ilsemannite

Ilvaite

Inesite

Iodargyrite

Iranite

Iridium

Iriginite

Iron

var: Kamacite

var: Martensite

Ishikawaite

Isocubanite

Ixiolite

Jalpaite

Jamesonite

Jarosite

Johannite

var: Gilpinite

Jordanite

Jordisite

Joséite-B

Juanite (TL)

Kaersutite

Kainosite-(Y)

Kalinite

Kaolinite

Kasolite

Kegginite (TL)

Keystoneite (TL)

'K Feldspar'

'var: Adularia'

Kieserite

Kobellite

Koechlinite

Kogarkoite

Kokinosite (TL)

Kolwezite

Konyaite

Kostovite

Koutekite

Krennerite

Krupkaite

Ktenasite

Kuramite

Kutnohorite

Kyanite

Laihunite

Lamprophyllite

Lanarkite

Langite

Lansfordite

Lasalite

Laumontite

Lazulite

Lead

Leadhillite

Lepidocrocite

'Lepidolite'

Leucophosphite

Leucoxene

'Lévyne'

Lévyne-Ca

Liandratite

Liebigite

Lillianite

'Limonite'

Linarite

Litharge

Lithiophilite

'Lithiophilite-Triphylite Series'

Lizardite

Löllingite

Löweite

Lueshite

Luzonite

Mackayite

Mackinawite

Maghemite

Magnesio-arfvedsonite

Magnesiochromite

Magnesio-hastingsite

Magnesio-hornblende

Magnesiopascoite

Magnesio-riebeckite

Magnesite

var: Ferroan Magnesite

Magnetite

var: Titaniferous Magnetite

Magnolite (TL)

Malachite

Mallardite

Mandarinoite

'Manganese Oxides'

'var: Manganese Dendrites'

Manganite

Manjiroite

Marcasite

Marialite

Martyite

Mascagnite

Massicot

Matildite

Maucherite

Mawsonite

Mazzettiite (TL)

Mcguinnessite

Mckinstryite

Meionite

Melanovanadite

Melanterite

var: Cuprian Melanterite

var: Kirovite

'Melilite Group'

Melonite

Mendozite

Mercury

Merrillite

Mesaite (TL)

Mesolite

Meta-autunite

Metadelrioite (TL)

Metahewettite

Metamunirite (TL)

Metarossite (TL)

Metasideronatrite

Metatorbernite

Metatyuyamunite

Metauranocircite-I

Metauranospinite

Metazeunerite

'Meteoritic Iron'

Miargyrite

'Mica Group'

Microcline

var: Amazonite

Microlite Group

Milarite

Millerite

Mimetite

Minium

Mirabilite

Mixite

Mogánite

Molybdenite

'Molybdenite-2H'

Molybdite

Molybdomenite

'Monazite'

Monazite-(Ce)

Monazite-(Sm)

Montebrasite

Monticellite

Montmorillonite

Montroseite (TL)

Mordenite

Morenosite

Morrisonite (TL)

Mummeite (TL)

Munirite

Murataite-(Y) (TL)

Muscovite

var: Fuchsite

var: Illite

var: Mariposite

var: Phengite

var: Sericite

Nacrite

Nagyágite

Nahcolite

Namibite

Nashite (TL)

Natroalunite (TL)

Natrojarosite

Natrolite

'Natromontebrasite'

Natron

Natroniobite

Natrouranospinite

Naumannite

Navajoite

Nepheline

Nesquehonite

Neyite

Nickel

Nickeline

'Nickel-iron'

Nitratine

Nontronite

Nordstrandite

Norsethite

Northupite

Nosean

Novákite

Nuffieldite

'Ochre'

Offretite

Oldhamite

Olivenite

'Olivine'

Omphacite

'Onegite'

Opal

var: Fire Opal

var: Geyserite

var: Moss Opal

var: Opal-AN

var: Opal-CT

var: Wood Opal

Orpiment

Orthoclase

Orthominasragrite

'Orthopyroxene Subgroup'

Osarizawaite

Ourayite (TL)

Owyheeite

Oxyplumboroméite

Pachnolite

Packratite (TL)

Palygorskite

Paragonite

Paramontroseite (TL)

Pararammelsbergite

Paratacamite

Paratellurite

Pargasite

'Parisite'

Parisite-(Ce)

Parnauite

Parsonsite

Pascoite

Pavonite

Pearceite (TL)

'Pearceite-T2ac'

Pentahydrite (TL)

Pentlandite

Perbøeite-(Ce)

Periclase

Perovskite

Perryite (TL)

'Petrified Wood'

Petzite

Pharmacolite

Pharmacosiderite

Phenakite

'Phillipsite'

Phillipsite-Ca

Phlogopite

var: Ferroan Phlogopite

Phosgenite

Phosphosiderite

Phosphuranylite

Pickeringite

Picropharmacolite

Piemontite

Pigeonite

Pilsenite

'Pinite'

Pintadoite

Pitticite

Plancheite

'Planerite-Turquoise Series'

Platinum

Plattnerite

'Plessite'

Plumbogummite

Plumbojarosite

Pollucite

Polybasite

Polybasite-Tac

Polycrase-(Y)

Polydymite

Polylithionite

Posnjakite

Postite

Poughite

Powellite

Prehnite

Prosopite

Proto-anthophyllite

'Proto-ferro-anthophyllite' (FRL)

Proustite

Pseudobrookite

Pseudorutile

'Psilomelane'

'Pumpellyite'

Purpurite

Pyrargyrite

Pyrite

var: Bravoite

'Pyrobitumen'

'var: Thucholite'

'Pyrochlore'

Pyrochlore Group

var: Plumbopyrochlore (of Skorobogatova et al.)

'Pyrochlore Supergroup'

'var: Betafite (of Hogarth 1977)'

Pyrolusite

Pyromorphite

Pyrope

Pyrophanite

Pyrophyllite

Pyrostilpnite

'Pyroxene Group'

Pyroxmangite

Pyrrhotite

Quartz

var: Agate

var: Amethyst

var: Bloodstone

var: Carnelian

var: Chalcedony

var: Citrine

var: Fairburn Agate

var: Fortification Agate

var: Milky Quartz

var: Moss Agate

var: Onyx

var: Plume Agate

var: Prase

var: Rock Crystal

var: Rose Quartz

var: Rutilated Quartz

var: Sardonyx

var: Sceptre Quartz

var: Smoky Quartz

Rakovanite (TL)

Rammelsbergite

Ramsdellite

Rauvite

Realgar

Rectorite

Renierite

'Rhabdophane'

Rhabdophane-(Ce)

Rhodochrosite

Rhodonite

Richterite

Rickardite (TL)

Riebeckite

'Riebeckite Root Name'

'var: Crocidolite'

Rilandite (TL)

'Robellazite'

Rockbridgeite

Romanèchite

Römerite

Rosasite

Roscoelite

Rossite (TL)

Rozenite

'Ruby Silver Ore'

Rutherfordine

Rutile

var: Ilmenorutile

var: Niobian Rutile

var: Strüverite

Rynersonite

Sabugalite

Safflorite

Saléeite

Samarskite-(Y)

Samarskite-(Yb) (TL)

Sanidine

Saponite

Sapphirine

Sartorite

Sauconite

'Scapolite'

'var: Wernerite'

'Schalenblende'

Scheelite

Schindlerite (TL)

'Schirmerite' (FRL)

Schoepite

Schorl

Schorlomite

Schreibersite

Schröckingerite

Schumacherite

Schwertmannite

Scolecite

Scorodite

Scorzalite

Searlesite

Selenium

Sellaite

Semseyite

Senaite

Sepiolite

'Serpentine Subgroup'

Serpierite

Sherwoodite (TL)

Shortite

Sicklerite

Siderite

var: Manganoan Siderite

var: Mg-rich Siderite

var: Oligonite

Siderophyllite (TL)

Siderotil

Sidwillite (TL)

Siegenite

'Silica'

Sillimanite

Silver

var: Amalgam

Simplotite (TL)

Sklodowskite

Skutterudite

'Smectite Group'

Smithsonite

var: Monheimite

Smythite

Sodalite

Soddyite

Sonoraite

Spangolite

Spessartine

Sphalerite

var: Marmatite

Spinel

Spionkopite

Spodumene

Stannite

Starkeyite

Staurolite

Steigerite (TL)

Stellerite

Stephanite

Stevensite

Stibarsen

'Stibiconite'

Stibiocolumbite

Stibiotantalite

Stibnite

'Stilbite'

Stilbite-Ca

Stilpnomelane

var: Ferristilpnomelane

Strengite

Stromeyerite

Strontianite

Struvite

Stützite

Sulphur

Svanbergite

Swartzite

Sylvanite

Sylvite

'Synchysite'

Synchysite-(Ce)

Synchysite-(Y)

Szomolnokite

Taenite

Tainiolite

Talc

Tangeite

'Tantalite'

Tantalite-(Fe)

Tantalite-(Mn)

Tapiolite-(Fe)

Tellurantimony

Tellurite

Tellurium

Tellurobismuthite

Tennantite

'Tennantite-Tetrahedrite Series'

Tenorite

Tephroite

Tetra-auricupride

Tetradymite

Tetrahedrite

var: Argentian Tetrahedrite

var: Mercurian Tetrahedrite

var: Zincian Tetrahedrite

Thalénite-(Y)

Theisite (TL)

'Thénardite'

Thomsenolite

'Thomsonite'

Thomsonite-Ca

Thorianite

Thorite

var: Ferrithorite

var: Uranothorite

'Thorogummite'

Titanite

Todorokite

Topaz

var: Pyknite

Torbernite

Törnebohmite-(Ce)

'Tourmaline'

'var: Indicolite'

'var: Rubellite'

'var: Verdelite'

'var: Watermelon Tourmaline'

Treasurite (TL)

Tremolite

Tridymite

Trilithionite

Triphylite

Triplite

Troilite

Trolleite

Trona

Tschermigite

Tungstite

'Turgite'

Turquoise

Tyuyamunite

Ullmannite

Ulvöspinel

'UM1956-02-SiO:CaHU'

'UM1966-02-E:FeNi'

'Unnamed (Hg Amidonitrate)'

'Unnamed (Zn-analogue of Ktenasite)'

Upalite

Uraninite

var: Pitchblende

Uranocircite

Uranophane

Uranophane-β

Uranopilite

Uranopolycrase

Uranospinite

'Uranpyrochlore (of Hogarth 1977)'

'Uvite'

Uytenbogaardtite

Vanadinite

Vanarsite (TL)

Vandendriesscheite

'Vandiestite'

Vanoxite (TL)

Variscite

Vermiculite

Vernadite

Vésigniéite

Vesuvianite

Vikingite

Villiaumite

Violarite

Vivianite

Volborthite

Volynskite

Vulcanite (TL)

'Wad'

Wagnerite

Wairakite

Wavellite

Weberite

Wegscheiderite

Weishanite

Weissite (TL)

'Wellsite'

Wernerbaurite (TL)

Wilcoxite

Willemite

Winchite

'Winebergite'

Wittichenite

'Wolframite'

Wollastonite

Wölsendorfite

Woodhouseite

Woodwardite

Wulfenite

Wurtzite

Xanthoconite

'Xenotime'

Xenotime-(Y)

Yttrocolumbite-(Y)

Yttrotantalite-(Y)

Yukonite

Zálesíite

'Zeolite Group'

Zeunerite

Zincmelanterite (TL)

Zincobotryogen

Zincocopiapite

Zincrosasite

Zinkenite

'Zinnwaldite'

Zippeite

Zircon

var: Cyrtolite

Zirkelite

Zoisite

var: Thulite

Zunyite (TL)

Zwieselite


828 valid minerals. 73 (TL) - type locality of valid minerals. 2 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Rock Types Recorded

Entries shown in red are rocks recorded for this region.

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities


Localities in this Region