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, Threlkeld, Eden, Cumbria, England, UK

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

mindat Locality ID: 27289
mindat URL: http://www.mindat.org/loc-27289.html

Tectonic Settings:

Total number of sublocalities beneath "Threlkeld, Threlkeld, Eden, Cumbria, England, UK": 3
Total number of bottom-level sublocalities: 3

Number of Child Localities: 3
Child Localities:
Gate Gill Mine
Threlkeld Mine
Woodend Mine

Latitude: 54°37'30"N
Longitude: 3°2'44"W
Decimal Degree (lat, lon): 54.625,-3.0455555555556

A	This mineral is Anthropogenic.
G	This mineral is directly dated.
B	This mineral is reported as having this age.
Y	This mineral is using an age reported as an element mineralization period.
O	This mineral is using an age calculated from all data at the locality.
R	The age displayed for this mineral originates from a different, non-child locality.
P	The 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.

Andalusite	Aragonite	Baryte	Beryl	Clay	Malachite	Mica	None	Pyrite	Rocksalt
Sphalerite

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 Cu Fe H K Mg O Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Andalusite Aragonite Baryte Beryl Clay Malachite Mica None Pyrite Rocksalt
Sphalerite

10 IMA Minerals at location:

Andalusite ()*	Baryte ()*	Cerussite ()*	Cordierite ()*	Dolomite ()*
Galena ()*	Malachite ()*	Muscovite ()*	Pyrite ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Andalusite ()*	Andalusite	Al₂SiO₅	331	316	1	119729	1310
Baryte ()*	Baryte	Ba(SO₄)	340	235	2	119729,119730	11547
Cerussite ()*	Aragonite	Pb(CO₃)	340	235	2	119729,119730	4979
Cordierite ()*	Beryl	Mg₂Al₄Si₅O₁₈	331	316	1	119729	1008
Dolomite ()*	None	CaMg(CO₃)₂	331	316	1	119729	9895
Galena ()*	Rocksalt	PbS	340	235	3	119728,119729,119730	24243
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂	340	235	1	119730	12537
Muscovite ()*	Mica Clay	KAl₂(Si₃Al)O₁₀(OH)₂	331	316	1	119729	17380
Pyrite ()*	Pyrite	FeS₂	340	235	2	119729,119730	39462
Sphalerite ()*	Sphalerite	ZnS	340	235	2	119729,119730	21482

8 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	Sample Num	Age from other Locality	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID
JGS171_49_001	245	235	245-235	paleomag	age of hematite deposit			Yes	Hematite	25832	Cumbria, England, UK	Cumbria	Crowley et al. (2014)		JGS171_49
Kristen000271	272	272		K-Ar		illite	B1	Yes		1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Brundholme Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000272	284	284		K-Ar		illite	B2	Yes		1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Brundholme Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000273	332	332		K-Ar		illite	B3	Yes		1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Brundholme Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000274	340	340		K-Ar		illite	B4	Yes		1432	Brundholme Mine (Glenderaterra Mine; Blencathra Mine), Glenderaterra Valley, Threlkeld, Eden, Cumbria, England, UK	Brundholme Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000268	316	316		K-Ar		illite	TH1			4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Threlkeld Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000269	329	329		K-Ar		illite	TH2			4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Threlkeld Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521
Kristen000270	331	331		K-Ar		illite	TH3			4865	Threlkeld Mine, Threlkeld, Threlkeld, Eden, Cumbria, England, UK	Threlkeld Mine	Ineson and Mitchell (1974)	10.1017/S0016756800041571	GM111_521

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...