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:
Crabtree Mine (Big Crabtree Emerald Mine), Spruce Pine, Spruce Pine District, Mitchell Co., North Carolina, USA

Oldest recorded age at locality: 367
Youngest recorded age at locality: 365

mindat Locality ID: 7881
mindat URL: http://www.mindat.org/loc-7881.html

Tectonic Settings:

Total number of sublocalities beneath "Crabtree Mine (Big Crabtree Emerald Mine), Spruce Pine, Spruce Pine District, Mitchell Co., North Carolina, USA": 0
Total number of bottom-level sublocalities: 0

Latitude: 35°52'29"N
Longitude: 82°7'12"W
Decimal Degree (lat, lon): 35.874722222222,-82.12
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 B Be Ca F Fe H K Mg Mn Na O P S Si Ti Y Zr 

Elements from minerals reported directly at this locality: Al B Be Ca F Fe H K Mg Mn Na O P S Si Ti Y Zr 

Structural Groups for minerals in this locality: 
AmphiboleBerylClayClinozoisiteEpidoteFeldsparFluoriteGarnetMicaNone
PyriteQuartzSpinelTitaniteTourmalineZircon

19 IMA Minerals at location:
Actinolite  (*)Albite  (*)Almandine  (*)Beryl  (*)Clinozoisite  (*)
Cordierite  (*)Fluor-dravite  (*)Fluorite  (*)Magnetite  (*)Muscovite  (*)
Phlogopite  (*)Pyrite  (*)Quartz  (*)Schorl  (*)Spessartine  (*)
Titanite  (*)Xenotime-(Y)  (*)Zircon  (*)Zoisite  (*)
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)236736503419
Albite  (*)FeldsparNa(AlSi3O8)36736508803
Almandine  (*)GarnetFe2+3Al2(SiO4)336736502353
Beryl  (*)BerylBe3Al2Si6O1836736504286
Clinozoisite  (*)Clinozoisite EpidoteCa2Al3[Si2O7][SiO4]O(OH)36736501025
Cordierite  (*)BerylMg2Al4Si5O1836736501008
Fluor-dravite  (*)TourmalineNaMg3Al6(Si6O18)(BO3)3(OH)3F36736508
Fluorite  (*)FluoriteCaF236736509617
Magnetite  (*)SpinelFe2+Fe3+2O4367365014899
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2367365017380
Phlogopite  (*)Mica ClayKMg3(AlSi3O10)(OH)236736502273
Pyrite  (*)PyriteFeS2367365039462
Quartz  (*)QuartzSiO2367365061156
Schorl  (*)TourmalineNaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)36736502705
Spessartine  (*)GarnetMn2+3Al2(SiO4)336736501214
Titanite  (*)TitaniteCaTi(SiO4)O36736504899
Xenotime-(Y)  (*)ZirconY(PO4)3673650939
Zircon  (*)ZirconZr(SiO4)36736505251
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)36736501025


1 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Bradley_2012_164367365366±1U/Pb zircon  YesZircon  49771McHone Mine Pegmatite, Spruce Pine District, Mitchell Co., North Carolina, USAMcHoneMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

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