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:
Kea, Cornwall, England, UK

Oldest recorded age at locality: 269
Youngest recorded age at locality: 263

mindat Locality ID: 222231
mindat URL: http://www.mindat.org/loc-222231.html

Tectonic Settings:

Total number of sublocalities beneath "Kea, Cornwall, England, UK": 13
Total number of bottom-level sublocalities: 8

Number of Child Localities: 2
Child Localities:
Baldhu
Bissoe

Latitude: 50°14'19"N
Longitude: 5°7'8"W
Decimal Degree (lat, lon): 50.238611111111,-5.1188888888889

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	Alunite	Apatite	Aragonite	Arsenopyrite	Baryte	Beraunite	Calcite	Chalcanthite	Chalcopyrite
Childrenite	Chlorite	Clay	Connellite	Copper	Devilline	Fluorite	Kaolinite	Malachite	Marcasite
Melanterite	Nickeline	None	Pentlandite	Perovskite	Pharmacosiderite	Pyrite	Quartz	Rocksalt	Rutile
Serpentine	Skutterudite	Sphalerite	Spinel	Stannite	Stibnite	Tetrahedrite	Vivianite	Wurtzite

Annabergite ()*	Arsenopyrite ()*	Baryte ()*	Beraunite ()*	Bismuthinite ()*
Bornite ()*	Cacoxenite ()*	Cassiterite ()*	Cerussite ()*	Chalcanthite ()*
Chalcopyrite ()*	Childrenite ()*	Chrysocolla ()*	Clinochlore ()*	Connellite ()*
Crandallite ()*	Cronstedtite ()*	Devilline ()*	Fluorapatite ()*	Fluorite ()*
Galena ()*	Graphite ()*	Hisingerite ()*	Hydrozincite ()*	Kaolinite ()*
Langite ()*	Ludlamite ()*	Magnetite ()*	Malachite ()*	Marcasite ()*
Melanterite ()*	Nickeline ()*	Pentlandite ()*	Pharmacosiderite ()*	Pyrite ()*
Pyromorphite ()*	Pyrrhotite ()*	Quartz ()*	Siderite ()*	Silver ()*
Skutterudite ()*	Sphalerite ()*	Stannite ()*	Stibnite ()*	Tennantite-(Fe) ()*
Vivianite ()*	Wurtzite ()*

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: Ag Al As Ba Bi C Ca Cl Co Cu F Fe H K Mg Ni O P Pb S Sb Si Sn Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Allophane Alunite Apatite Aragonite Arsenopyrite Baryte Beraunite Calcite Chalcanthite Chalcopyrite
Childrenite Chlorite Clay Connellite Copper Devilline Fluorite Kaolinite Malachite Marcasite
Melanterite Nickeline None Pentlandite Perovskite Pharmacosiderite Pyrite Quartz Rocksalt Rutile
Serpentine Skutterudite Sphalerite Spinel Stannite Stibnite Tetrahedrite Vivianite Wurtzite

47 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
Annabergite ()*	Vivianite	Ni₃(AsO₄)₂·8H₂O	269	263	1	117736	445
Arsenopyrite ()*	Arsenopyrite	FeAsS	269	263	2	117736,117741	9052
Baryte ()*	Baryte	Ba(SO₄)	269	263	1	117736	11547
Beraunite ()*	Beraunite	Fe³⁺₆(PO₄)₄O(OH)₄·6H₂O	269	263	1	117736	136
Bismuthinite ()*	Stibnite	Bi₂S₃	269	263	1	117736	1935
Bornite ()*	None	Cu₅FeS₄			1	117733	5516
Cacoxenite ()*	None	Fe³⁺₂₄AlO₆(PO₄)₁₇(OH)₁₂·75H₂O	269	263	1	117736	280
Cassiterite ()*	Rutile	SnO₂	269	263	6	117733,117734,117736,117737,117741,117742	5171
Cerussite ()*	Aragonite	Pb(CO₃)	269	263	2	117733,117736	4979
Chalcanthite ()*	Chalcanthite	Cu(SO₄)·5H₂O	269	263	1	117736	925
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	269	263	4	117732,117733,117736,117741	27198
Childrenite ()*	Childrenite	Fe²⁺Al(PO₄)(OH)₂·H₂O	269	263	1	117736	93
Chrysocolla ()*	Allophane	(Cu_2-xAl_x)H_2-xSi₂O₅(OH)₄·nH₂O			1	117741	3531
Clinochlore ()*	Chlorite Clay	Mg₅Al(AlSi₃O₁₀)(OH)₈	269	263	1	117736	1756
Connellite ()*	Connellite	Cu₃₆(SO₄)(OH)₆₂Cl₈·6H₂O			1	117741	295
Crandallite ()*	Alunite	CaAl₃(PO₄)(PO₃OH)(OH)₆	269	263	1	117736	310
Cronstedtite ()*	Clay Serpentine	(Fe²⁺,Fe³⁺)₃(Si,Fe³⁺)₂O₅(OH)₄	269	263	1	117736	54
Devilline ()*	Devilline	CaCu₄(SO₄)₂(OH)₆·3H₂O	269	263	1	117736	366
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	269	263	1	117736	2740
Fluorite ()*	Fluorite	CaF₂	269	263	1	117736	9617
Galena ()*	Rocksalt	PbS	269	263	3	117733,117736,117742	24243
Graphite ()*	None	C	269	263	1	117736	2812
Hisingerite ()*	Kaolinite Clay	Fe₂Si₂O₅(OH)₄·2H₂O	269	263	1	117736	144
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	269	263	1	117736	1066
Kaolinite ()*	Clay Kaolinite	Al₂Si₂O₅(OH)₄	269	263	1	117736	5591
Langite ()*	None	Cu₄(SO₄)(OH)₆·2H₂O			1	117733	593
Ludlamite ()*	None	Fe²⁺₃(PO₄)₂·4H₂O	269	263	1	117736	66
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	269	263	1	117736	14899
Malachite ()*	Malachite	Cu₂(CO₃)(OH)₂			1	117741	12537
Marcasite ()*	Marcasite	FeS₂	269	263	1	117736	5674
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	269	263	1	117736	915
Nickeline ()*	Nickeline	NiAs	269	263	1	117736	633
Pentlandite ()*	Pentlandite	(Ni,Fe)₉S₈	269	263	1	117736	1512
Pharmacosiderite ()*	Pharmacosiderite	KFe³⁺₄(AsO₄)₃(OH)₄·6-7H₂O	269	263	2	117733,117736	428
Pyrite ()*	Pyrite	FeS₂	269	263	4	117733,117736,117737,117741	39462
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl			1	117733	1725
Pyrrhotite ()*	Nickeline	Fe₇S₈	269	263	1	117736	9056
Quartz ()*	Quartz	SiO₂	269	263	3	117736,117737,117741	61156
Siderite ()*	Calcite	Fe(CO₃)	269	263	2	117733,117736	6417
Silver ()*	Copper	Ag			1	117733	5186
Skutterudite ()*	Skutterudite Perovskite	CoAs₃			1	117733	531
Sphalerite ()*	Sphalerite	ZnS	269	263	5	117733,117734,117736,117737,117742	21482
Stannite ()*	Stannite Sphalerite	Cu₂FeSnS₄	269	263	1	117736	668
Stibnite ()*	Stibnite	Sb₂S₃			1	117733	3418
Tennantite-(Fe) ()*	Tetrahedrite	Cu₆(Cu₄Fe₂)As₄S₁₃	269	263	1	117736	1803
Vivianite ()*	Vivianite	Fe²⁺₃(PO₄)₂·8H₂O	269	263	2	117733,117736	636
Wurtzite ()*	Wurtzite	ZnS	269	263	1	117736	372

2 Ages assigned to this locality:

	Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Sample Source	Sample Num	Run Num	Age from other Locality	Dated Mineral	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 DOI	Reference ID	Age Notes
	Lucy_075	269	263	266 ± 3	Sm-Nd			fluorite				Fluorite			846	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Cornwall, England, UK	Wheal Jane	LeBoutillier et al. (2003)		GSWE10_403
	Lucy_159	269	263	266 ± 3	Sm-Nd	Assigned to the 'main stage' of cassiterite lode development but a later event.		fluorite				Fluorite			846	Wheal Jane (Falmouth Consolidated Mines), Baldhu, Kea, Cornwall, England, UK	Wheal Jane	Chen et al (1993)	10.1144/gsjgs.150.6.1183	JGSL150_1183	Protracted hiatus between the pluton emplacement and main-stage Sn(-Cu) lode mineralization has been proposed based on Sm-Nd isochron dating of fluorites from the South Crofty and Wheal Jane mines. These were assigned to the 'main stage' of cassiterite lode development by Chesney et al (1991a, b) but to a later event by Chesney et al. (1990).

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...