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:
Union Co., Tennessee, USA


mindat Locality ID: 24787
mindat URL: http://www.mindat.org/loc-24787.html

Tectonic Settings:

Total number of sublocalities beneath "Union Co., Tennessee, USA": 43
Total number of bottom-level sublocalities: 37

Number of Child Localities: 13
Child Localities:
Bill George Quarry (33 Quarry)
Clarks Hollow Kimberlite (Norris Lake Kimberlite)
Clinch Valley Area
East Tennessee Marble District
Graves Prospects
Harry Hollow Quarry (Union County Highway Department)
Hickory Valley Quarry
Luttrell Quarry (Luttrell Mining Company; Inc.)
Mayes Chapel
Powell River District
Unnamed Zinc (MRDS - 10300483)
Welch Quarry (Union County Road Commission)
Wilson Prospect

Latitude: 36°16'48"N
Longitude: 83°49'56"W
Decimal Degree (lat, lon): 36.28,-83.832222222222

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 Ba C Ca Cd Fe H K Mg O Pb S Si Ti Zn 

Elements from minerals reported directly at this locality: 

Structural Groups for minerals in this locality: 
AragoniteBaryteCalciteClayCorundumDiasporeMarcasiteMicaNoneNot in a structural group
PyriteRocksaltRutileSerpentineSmectite-vermiculiteSphaleriteSpinelTitaniteWurtzite

23 IMA Minerals at location:
Amesite  (*)Antigorite  (*)Baryte  (*)Calcite  (*)Cerussite  (*)
Chrysotile  (*)Dolomite  (*)Galena  (*)Goethite  (*)Greenockite  (*)
Hemimorphite  (*)Ilmenite  (*)Magnesite  (*)Magnetite  (*)Marcasite  (*)
Phlogopite  (*)Pyrite  (*)Rutile  (*)Smithsonite  (*)Sphalerite  (*)
Spinel  (*)Titanite  (*)Vermiculite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Amesite  (*)Clay SerpentineMg2Al(AlSiO5)(OH)4126922974
Antigorite  (*)Serpentine ClayMg3Si2O5(OH)41269229708
Baryte  (*)BaryteBa(SO4)126923111547
Calcite  (*)CalciteCa(CO3)3269229,269231,26924727770
Cerussite  (*)AragonitePb(CO3)2269247,2692574979
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)41269229951
Dolomite  (*)NoneCaMg(CO3)218269231,269235,269237,269240,269243,269244,269245,269247,269251,269255,269256,269257,269258,269259,269261,269263,269266,2692679895
Galena  (*)RocksaltPbS13269235,269240,269246,269247,269255,269257,269258,269260,269261,269263,269264,269267,26927024243
Goethite  (*)DiasporeFeO(OH)12692437437
Greenockite  (*)WurtziteCdS3269231,269247,269257717
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O3269243,269247,2692571689
Ilmenite  (*)CorundumFe2+Ti4+O312692295433
Magnesite  (*)CalciteMg(CO3)12692291487
Magnetite  (*)SpinelFe2+Fe3+2O4126922914899
Marcasite  (*)MarcasiteFeS212692315674
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)212692292273
Pyrite  (*)PyriteFeS212269231,269235,269240,269243,269247,269253,269257,269258,269262,269263,269267,26927039462
Rutile  (*)RutileTiO212692295614
Smithsonite  (*)CalciteZn(CO3)7269243,269244,269247,269257,269258,269260,2692642473
Sphalerite  (*)SphaleriteZnS16269231,269235,269240,269243,269245,269246,269247,269251,269252,269256,269257,269258,269259,269263,269264,26927021482
Spinel  (*)SpinelMgAl2O412692291934
Titanite  (*)TitaniteCaTi(SiO4)O12692294899
Vermiculite  (*)Clay Smectite-vermiculiteMg0.7(Mg,Fe,Al)6(Si,Al)8O20(OH)4·8H2O1269229652



No ages have been assigned to this locality yet.

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All locality data graciously provided by mindat.org

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