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:
Gratiot Co., Michigan, USA


mindat Locality ID: 55629
mindat URL: http://www.mindat.org/loc-55629.html

Tectonic Settings:

Total number of sublocalities beneath "Gratiot Co., Michigan, USA": 10
Total number of bottom-level sublocalities: 9

Number of Child Localities: 9
Child Localities:
Alma Wells
Ashley Tile Company Clay Pit
C. D. Peet Clay Pit
Ithaca
J. O. Thomas Clay Pit
Kennet Company Clay Pit
Riverside Brick & Tile Company Clay Pit
St. Louis Tile Company Clay Pit
St. Louis Well

Latitude: 43°21'48"N
Longitude: 84°29'59"W
Decimal Degree (lat, lon): 43.363333333333,-84.499722222222
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 Cl Cu Fe H K Mg Na O S Si Ti 

Elements from minerals reported directly at this locality: Cl Na 

Structural Groups for minerals in this locality: 
AmphiboleCalciteChalcopyriteChloriteClayClinozoisiteCopperCorundumDigeniteEpidote
FeldsparNoneNot in a structural groupPrehnitePyritePyroxeneQuartzRocksaltTitanite

20 IMA Minerals at location:
Actinolite  (*)Albite  (*)Anatase  (*)Anhydrite  (*)Augite  (*)
Bornite  (*)Calcite  (*)Chalcopyrite  (*)Clinochlore  (*)Copper  (*)
Digenite  (*)Epidote  (*)Halite  (*)Ilmenite  (*)Microcline  (*)
Prehnite  (*)Pyrite  (*)Quartz  (*)Titanite  (*)Tremolite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)212204763419
Albite  (*)FeldsparNa(AlSi3O8)12204768803
Anatase  (*)Not in a structural groupTiO212204762162
Anhydrite  (*)Not in a structural groupCa(SO4)2220472,2204811588
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O612204762060
Bornite  (*)NoneCu5FeS412204765516
Calcite  (*)CalciteCa(CO3)122047627770
Chalcopyrite  (*)ChalcopyriteCuFeS2122047627198
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)812204761756
Copper  (*)CopperCu12204763846
Digenite  (*)DigeniteCu1.8S12204761027
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)12204768173
Halite  (*)RocksaltNaCl01398
Ilmenite  (*)CorundumFe2+Ti4+O312204765433
Microcline  (*)FeldsparK(AlSi3O8)12204764924
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)212204761898
Pyrite  (*)PyriteFeS2122047639462
Quartz  (*)QuartzSiO2122047661156
Titanite  (*)TitaniteCaTi(SiO4)O12204764899
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)212204762562


No ages have been assigned to this locality yet.
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