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:
Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK

Oldest recorded age at locality: 340
Youngest recorded age at locality: 235

mindat Locality ID: 4865
mindat URL: http://www.mindat.org/loc-4865.html

Tectonic Settings:

Total number of sublocalities beneath "Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 54°37'31"N
Longitude: 3°2'44"W
Decimal Degree (lat, lon): 54.625277777778,-3.0455555555556
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 Fe H K Mg O Pb S Si Zn 

Elements from minerals reported directly at this locality: Al Ba C Ca Fe H K Mg O Pb S Si Zn 

Structural Groups for minerals in this locality: 
AndalusiteAragoniteBaryteBerylClayMicaNonePyriteRocksaltSphalerite

9 IMA Minerals at location:
Andalusite  (*)Baryte  (*)Cerussite  (*)Cordierite  (*)Dolomite  (*)
Galena  (*)Muscovite  (*)Pyrite  (*)Sphalerite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Andalusite  (*)AndalusiteAl2SiO533131601310
Baryte  (*)BaryteBa(SO4)331316011547
Cerussite  (*)AragonitePb(CO3)33131604979
Cordierite  (*)BerylMg2Al4Si5O1833131601008
Dolomite  (*)NoneCaMg(CO3)233131609895
Galena  (*)RocksaltPbS331316024243
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2331316017380
Pyrite  (*)PyriteFeS2331316039462
Sphalerite  (*)SphaleriteZnS331316021482


8 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
JGS171_49_001245235245-235paleomagage of hematite deposit   YesHematite 25832Cumbria, England, UKCumbriaCrowley et al. (2014) JGS171_49 
Kristen000271272272 K-Ar illiteB1 Yes  1432Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UKBrundholme MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000272284284 K-Ar illiteB2 Yes  1432Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UKBrundholme MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000273332332 K-Ar illiteB3 Yes  1432Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UKBrundholme MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000274340340 K-Ar illiteB4 Yes  1432Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UKBrundholme MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000268316316 K-Ar illiteTH1    4865Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UKThrelkeld MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000269329329 K-Ar illiteTH2    4865Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UKThrelkeld MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 
Kristen000270331331 K-Ar illiteTH3    4865Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UKThrelkeld MineIneson and Mitchell (1974)10.1017/S0016756800041571GM111_521 

SampleSource LocalityReference URL

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