Mineral Evolution Database
Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.
Mineral locality data provided by mindat.org



The Mineral Evolution database is currently under development.

The goal of this page is to present localities at which the mineral is found, and estimates of the oldest possible geologic age of the minerals at these localities.


Locality Name:
Bayfield Co., Wisconsin, USA


mindat Locality ID: 25698
mindat URL: http://www.mindat.org/loc-25698.html

Tectonic Settings:

Total number of sublocalities beneath "Bayfield Co., Wisconsin, USA": 27
Total number of bottom-level sublocalities: 19

Number of Child Localities: 15
Child Localities:
18 Mile Creek Outcrops
Bayfield
Bayview Sandstone Quarry
Bender Prospect
Grandview Marble Quarry
Highway 27 Roadcuts
Keweenawan Gabbros
Lake Osborn
Lake Owen
Long Mile Fire Tower
Marengo River
Montrose Copper Prospects
Ounce River
Totagatic River
Upper Eau Claire Lake

Latitude: 46°21'11"N
Longitude: 91°12'50"W
Decimal Degree (lat, lon): 46.353055555556,-91.213888888889
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe age displayed for this mineral is the range of ages for this mineral at all of this locality's children.
This mineral's age has not yet been recorded.

This Mineral list contains entries from this locality, including sub-localities. Minerals in bold are reported by mindat.org as occurring directly at this locality, and do not occur at any children (sublocalities) of this locality.

Elements at this locality, including sub-localities: Al C Ca Cu Fe H Mg Na O S Si 

Elements from minerals reported directly at this locality: Al Na O Si 

Structural Groups for minerals in this locality: 
AmphiboleCalciteChalcopyriteClinozoisiteCopperEpidoteFeldsparMalachiteNatroliteNone
Not in a structural groupPectolitePrehnitePyroxeneQuartz

15 IMA Minerals at location:
Albite  (*)Augite  (*)Bornite  (*)Calcite  (*)Chalcopyrite  (*)
Clinozoisite  (*)Copper  (*)Epidote  (*)Laumontite  (*)Malachite  (*)
Natrolite  (*)Pectolite  (*)Prehnite  (*)Quartz  (*)Tremolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Albite  (*)FeldsparNa(AlSi3O8)08803
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O63286864,286870,2868712060
Bornite  (*)NoneCu5FeS412868645516
Calcite  (*)CalciteCa(CO3)2286869,28688427770
Chalcopyrite  (*)ChalcopyriteCuFeS2128686927198
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)12868711025
Copper  (*)CopperCu12868843846
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)3286864,286870,2868848173
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O12868841271
Malachite  (*)MalachiteCu2(CO3)(OH)22286864,28686912537
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O2286864,2868701236
Pectolite  (*)PectoliteNaCa2Si3O8(OH)1286870363
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)22286870,2868841898
Quartz  (*)QuartzSiO26286864,286866,286869,286870,286871,28688461156
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)212868692562


No ages have been assigned to this locality yet.

All locality data graciously provided by mindat.org

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