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

Ages for Chalcopyrite at St John's In The Vale, Threlkeld, Eden, Cumbria, England, UK

The cyan highlights indicate which age entries were selected as the "best" for assigning the mineral an age of 340Ma - 235Ma at this locality

Age range from children

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
Kristen000274	340	340				1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
JGS171_49_001	245	235		Hematite		25832	Cumbria, England, UK	Crowley et al. (2014)	JGS171_49

Locality age (remote)

Excel ID	Max Age (Ma)	Min Age (Ma)	Dated Mineral	Minerals explicitely stated as having this age	Age applies to these Elements	Dated Locality ID	Dated Locality	Ref	Ref ID
JGS171_49_001	245	235		Hematite		25832	Cumbria, England, UK	Crowley et al. (2014)	JGS171_49
Kristen000268	316	316				4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000269	329	329				4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000270	331	331				4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000271	272	272				1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000272	284	284				1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000273	332	332				1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521
Kristen000274	340	340				1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Ineson and Mitchell (1974)	GM111_521