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Wisconsin, USA

This page kindly sponsored by Bill Cordua
 
Location is approximate, based on center of defined region.
 
Latitude & Longitude: 44° North , 90° West (est.)
Neighbouring regions:
Museums in region:


Wisconsin has a diversity of mineral occurrences. Glaciers covered most of the state during the Pleistocene. The glacial drift contains a variety of jumbled materials, including drift copper, diamonds, flour gold, and, most notably, Lake Superior agates. Despite the glacial cover, many bedrock outcrops occur in the state. The bedrock structure is essentially a gentle arch cored by Precambrian rocks. Proterozoic carbonate rocks form the edge of the arch. Vugs in these rocks yield interesting crystallized minerals, such as millerite, fluorite, calcite and marcasite. In the southwestern portion of the state (Iowa, Lafayette and Grant counties) these rocks host classic Mississippi Valley-type lead-zinc deposits. The state mineral, galena, and state mascot, the badger, refer to the main ore and the nineteenth century miners. Toward the center of the state is a broad swath underlain by Cambrian sandstones, worked currently for “frac sand”. The bedrock in the northwestern part of the state is dominated by a continuation of the 1,100 million year old Midcontinent Rift from Michigan’s famous Keweenaw Peninsula. Although lacking in the bonanza copper deposits of Michigan, these rocks do contain similar minerals, most notably in Douglas County. The central part of the state contains granites and metamorphic rocks. Wisconsin’s state rock, red granite, comes from pits in this region. Some granitic rocks, notably in Marathon County, host interesting complex pegmatites. Across central Wisconsin is a 1,800 million year old volcanic belt that contains large massive sulfide deposits. Of these, the Flambeau Mine in Rusk County, produced many excellent mineral specimens. In the northeastern part of the state, Proterozoic banded iron formation of the Gogebic Range produced excellent specimens, particularly from the Montreal Mine in Iron County.


Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

Acanthite

Actinolite

Aegirine

Agrellite

Albite

var: Andesine

var: Cleavelandite

var: Oligoclase

'Albite-Anorthite Series'

'Alkali Feldspar'

Allanite-(Ce)

'Allanite Group'

Allophane

Alluaudite

Almandine

Altaite

Alunite

Amblygonite

Amphibole Supergroup

Analcime

Anatase

Andalusite

var: Chiastolite

Andradite

Anglesite

Anhydrite

Ankerite

Annabergite

Annite

Anorthite

var: Bytownite

'Anorthoclase'

Anthophyllite

Antigorite

'Apatite'

'var: Carbonate-rich Apatite'

'var: Collophane'

'Apophyllite'

Aragonite

Arfvedsonite

Arsenopyrite

Augite

Aurichalcite

Azurite

Baddeleyite

'Bariopyrochlore (of Hogarth 1977)'

Baryte

'Bastnäsite'

Bastnäsite-(Ce)

'Bastnäsite Group'

Bastnäsite-(La)

Bavenite

Beaverite-(Cu)

Béhierite

Bermanite

Bertrandite

Beryl

var: Aquamarine

var: Morganite

Beyerite

'Biotite'

Birnessite

Bismuth

'Bismutomicrolite (of Hogarth 1977)'

Bornite

Boulangerite

Braunite

'Bravoite'

Brookite

Brucite

Cacoxenite

Calaverite

Calcite

var: Limestone Onyx

Cancrinite

Cassiterite

Catapleiite

'Catlinite'

Celadonite

Celestine

Cerussite

Chalcanthite

Chalcocite

Chalcopyrite

Chamosite

var: Thuringite

Cheralite

'Cheralite-(Ce)'

Chevkinite-(Ce)

'Chlorite Group'

Chloritoid

Chromite

Chrysocolla

Chrysotile

Cinnabar

'Clays'

Clinochlore

'Clinopyroxene Subgroup'

Clinozoisite

Cobaltite

Columbite-(Fe)

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

Columbite-(Mn)

'Columbite-Tantalite'

Cookeite

Copiapite

Copper

Cordierite

Corrensite

Corundum

Covellite

Crandallite

Cristobalite

Cryolite

Cryptomelane

Cubanite

Cummingtonite

Cuprite

var: Chalcotrichite

Datolite

Daubréelite

Delvauxite

Diamond

Diaspore

Dickite

Digenite

Diopside

var: Chromian Diopside

Djurleite

Dolomite

Dyscrasite

Dzhalindite

Eastonite

Elbaite

'Electrum'

Empressite

Enargite

Enstatite

Epidote

Epsomite

Erythrite

Euclase

Eudialyte

'Eudialyte Group'

'var: Eucolite'

Euxenite-(Y)

Evansite

Fayalite

'Fayalite-Forsterite Series'

'Feldspar Group'

'var: Perthite'

Ferberite

'Fergusonite'

Ferrimolybdite

Ferristrunzite

Ferro-actinolite

Ferro-gedrite

Ferro-hornblende

'Ferronigerite'

Fillowite

Florencite-(Ce)

Fluorapatite

var: Carbonate-rich Fluorapatite

var: Mn-bearing Fluorapatite

Fluorite

Foitite

Forsterite

Freibergite

'Gadolinite'

Gadolinite-(Y)

Gahnite

Galena

var: Argentiferous Galena

'Garnet'

Gedrite

Glaucodot

Glauconite

Goethite

Gold

Gorceixite

Goslarite

Graphite

Grayite

Greenalite

Greenockite

Griphite

Grossular

Grunerite

Gypsum

var: Selenite

'Halloysite'

Halotrichite

Hambergite

Hastingsite

Hedenbergite

Helvine

Hematite

var: Martite

var: Specularite

Hemimorphite

Hessite

Heterosite

'Heulandite'

Hidalgoite

Hisingerite

Hollandite

Honessite (TL)

'Hornblende'

Hübnerite

Hureaulite

Huttonite

Hydromagnesite

Hydrozincite

'Hypersthene'

'Iddingsite'

Ilmenite

var: Picroilmenite

Iron

var: Kamacite

Isocubanite

Ixiolite

Jamesonite

Jarosite

Kaolinite

Kemmlitzite

Kentbrooksite

Kettnerite

'K Feldspar'

'var: Adularia'

Kolbeckite

Krennerite

Kutnohorite

Kyanite

Laumontite

Låvenite

Lawrencite

Lazulite

Leadhillite

Lechatelierite

Lepidocrocite

'Lepidolite'

Leucophosphite

Leucoxene

Liandratite

'Limonite'

'Lithian Muscovite'

Lithiophilite

Löllingite

Mackinawite

Magnesio-foitite

Magnesite

Magnetite

var: Titaniferous Magnetite

Malachite

'Manganese Oxides'

'var: Manganese Dendrites'

Manganite

'Manganoan Calcite'

Marcasite

'Maskelynite'

Melanterite

Merrillite

Metavariscite

Metavivianite

'Mica Group'

Microcline

var: Amazonite

Microlite Group

var: Uranmicrolite (of Hogarth 1977)

Millerite

Minium

Minnesotaite

Miserite

Molybdenite

'Monazite'

Monazite-(Ce)

Monazite-(La)

Monazite-(Nd)

Montmorillonite

'Moonstone'

Muscovite

var: Fuchsite

var: Illite

var: Sericite

Natrolite

Natrophilite

'Needle-ore'

Neotocite

Nepheline

Nickeline

Northupite

'Ochre'

'Olivine'

Opal

var: Opal-AN

Orthoclase

'Orthopyroxene Subgroup'

Osarizawaite

'Parisite'

Pectolite

Pentlandite

'Percivalite'

Perrierite-(Ce)

Petzite

Phenakite

Phlogopite

Phosphosiderite

Pigeonite

Platinum

'Plessite'

Plumbogummite

Pollucite

Polybasite

Polycrase-(Y)

Prehnite

Prosopite

Pseudobrookite

Pseudomalachite

Pseudorutile

'Psilomelane'

'Pumpellyite'

Purpurite

Pyrargyrite

Pyrite

'Pyrochlore'

Pyrochlore Group

var: Ceriopyrochlore (of Hogarth 1977) (FRL)

var: Plumbopyrochlore (of Skorobogatova et al.)

Pyrolusite

Pyromorphite

Pyrope

Pyrophyllite

'Pyroxene Group'

Pyrrhotite

Quartz

var: Agate

var: Aventurine

var: Chalcedony

var: Jasper

var: Lake Superior Agate

var: Rose Quartz

var: Smoky Quartz

Reidite

'Rhabdophane'

Rhabdophane-(Ce)

Rhabdophane-(La)

Rhabdophane-(Nd)

Rhodizite

Rhodochrosite

Riebeckite

'Riebeckite Root Name'

'var: Crocidolite'

Romanèchite

Rosasite

'Rubellite'

Rutile

var: Ilmenorutile

var: Strüverite

Rynersonite

Safflorite

Samarskite-(Y)

Sanidine

Saponite

Sauconite

'Scapolite'

Scheelite

Schorl

Schreibersite

'Serpentine Subgroup'

Sicklerite

Siderite

Siderophyllite

Siegenite

Sillimanite

Silver

Smithsonite

Sodalite

Spessartine

Sphalerite

var: Schalenblende

Spinel

Spodumene

Staurolite

Stephanite

'Stibiconite'

Stibiotantalite

Stilpnomelane

Strontianite

Sulphur

Svanbergite

'Synchysite'

'Synchysite Group'

Taenite

Tainiolite

Talc

Tantalite-(Fe)

Tantalite-(Mn)

Tantite

'Tapiolite'

Tapiolite-(Fe)

Tennantite

Tenorite

Tetrahedrite

Tetrataenite

Thalénite-(Y)

Thomsonite-Ca

Thorite

'Thorogummite'

Titanite

Topaz

'Tourmaline'

Tremolite

Tridymite

Triphylite

Troilite

Uraninite

Uranophane

'Uranpyrochlore (of Hogarth 1977)'

'Uvite Series'

Variscite

Varulite

Väyrynenite

Vesuvianite

Violarite

Vivianite

'Wad'

Wavellite

Waylandite

Wodginite

Wöhlerite

Wollastonite

Wurtzite

Xenotime-(Y)

Zaratite

'Zinnwaldite'

Zircon

Zoisite

var: Thulite


324 valid minerals. 1 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Rock Types Recorded

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

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Alphabetical List Tree Diagram

Localities in this Region