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:
Bath And North East Somerset, England, UK

Oldest recorded age at locality: 208.5
Youngest recorded age at locality: 0.0117

mindat Locality ID: 241958
mindat URL: http://www.mindat.org/loc-241958.html

Tectonic Settings:

Total number of sublocalities beneath "Bath And North East Somerset, England, UK": 12
Total number of bottom-level sublocalities: 7

Number of Child Localities: 6
Child Localities:
Bath
Charlcombe
Chew Magna
Claverton
East Harptree
Radstock

Latitude: 51°23'11"N
Longitude: 2°21'35"W
Decimal Degree (lat, lon): 51.386388888889,-2.3597222222222

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.

Allophane	Baryte	Calcite	Clay	Dundasite	Hydrotalcite	Kaolinite	Melanterite	None	Pyrite
Quartz	Smectite-vermiculite	Sphalerite

Allophane ()*	Calcite ()*	Celestine ()*	Dundasite ()*	Gibbsite ()*
Hydrotalcite ()*	Kaolinite ()*	Melanterite ()*	Montmorillonite ()*	Pyrite ()*
Quartz ()*	Scarbroite ()*	Smithsonite ()*	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 C Ca Fe H Mg Na O Pb S Si Sr Zn

Elements from minerals reported directly at this locality: Fe S

Structural Groups for minerals in this locality:
Allophane Baryte Calcite Clay Dundasite Hydrotalcite Kaolinite Melanterite None Pyrite
Quartz Smectite-vermiculite Sphalerite

14 IMA Minerals at location:

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
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	0.111	0.0117	1	116924	470
Calcite ()*	Calcite	Ca(CO₃)			1	116916	27770
Celestine ()*	Baryte	Sr(SO₄)			1	116919	1252
Dundasite ()*	Dundasite	PbAl₂(CO₃)₂(OH)₄·H₂O	0.111	0.0117	1	116924	97
Gibbsite ()*	None	Al(OH)₃	0.111	0.0117	1	116924	504
Hydrotalcite ()*	Hydrotalcite	Mg₆Al₂CO₃(OH)₁₆(H₂O)₄	0.111	0.0117	1	116924	87
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	0.111	0.0117	1	116924	5591
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O			1	116917	915
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O			2	116916,116917	1508
Pyrite ()*	Pyrite	FeS₂	208.5	201.3	0		39462
Quartz ()*	Quartz	SiO₂			1	116921	61156
Scarbroite ()*	None	Al₅(CO₃)(OH)₁₃·5H₂O	0.111	0.0117	1	116924	9
Smithsonite ()*	Calcite	Zn(CO₃)	65	1.8	1	116924	2473
Sphalerite ()*	Sphalerite	ZnS			1	116926	21482

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_520	Hydroscarbroite occurs with scarbroite in the dumps at East Harptree in veins and cavities. East Harptree is on the Northern edge of the Central Mendip Pb-Zn orefield. Ore forms in veins hosted by the Upper Triassic Dolomitic Conglomerate. After ore emplacement, the locality underwent intense hydrothermal silicification forming massive chert.
Michelle_527	East Harptree is on the Northern edge of the Central Mendip Pb-Zn orefield. Ore forms in veins hosted by the Upper Triassic Dolomitic Conglomerate. After ore emplacement, the locality underwent intense hydrothermal silicification forming massive chert.
Michelle_528	East Harptree is on the Northern edge of the Central Mendip Pb-Zn orefield. Ore forms in veins hosted by the Upper Triassic Dolomitic Conglomerate. After ore emplacement, the locality underwent intense hydrothermal silicification forming massive chert.

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Minerals explicitely stated as having this age	Age applies to these Elements	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID	Age Notes
Michelle_520	0.111	0.0117	Devensian	Stratigraphy	Age of secondary aluminum mineralization		Allophane, Alumohydrocalcite, Dundasite, Gibbsite, Hydroscarbroite, Kaolinite, Scarbroite	Al	4688	East Harptree Lead Mine, East Harptree, Bath And North East Somerset, England, UK	East Harptree	Ryback (1988)	JRS2_9	Age of aluminum mineralization. The author speculates that the modified groundwater control in the periglacial setting allowed the mobilization and concentration of aluminous solutions.
Michelle_527	65	1.8	Tertiary		Age of smithsonite mineralization		Smithsonite	Zn	4688	East Harptree Lead Mine, East Harptree, Bath And North East Somerset, England, UK	East Harptree	Ryback (1988)	JRS2_9	Age of smithsonite mineralization.
Michelle_528	208.5	201.3	Rhaetian		Age of silicification	high			4688	East Harptree Lead Mine, East Harptree, Bath And North East Somerset, England, UK	East Harptree	Ryback (1988)	JRS2_9	Age of silicification

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...