Mineral Evolution Database

Created and maintained by the Mineral Evolution Project in partnership with RRUFF and mindat.

Mineral locality data provided by mindat.org

Important Update News

The RRUFF Project has been migrated to RRUFF.net. Please update your bookmarks immediately, if you have not done so.

The data on this website is already three years out of date, and the entire website will be taken offline before the end of the year.

We are grateful to NASA for the funding of this effort.

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:
St Keverne, Cornwall, England, UK

mindat Locality ID: 16285
mindat URL: http://www.mindat.org/loc-16285.html

Tectonic Settings:

Total number of sublocalities beneath "St Keverne, Cornwall, England, UK": 17
Total number of bottom-level sublocalities: 15

Number of Child Localities: 11
Child Localities:
Black Head
Coverack
Dean Quarry
Gwenter (Gwinter; Gwendra)
Lanarth
Polkernogo
Porthallow (Porthalla)
Porthoustock
Spernic Cove
Treglossick
Wheal Downas

Latitude: 50°2'9"N
Longitude: 5°6'23"W
Decimal Degree (lat, lon): 50.035833333333,-5.1063888888889

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.

Amphibole	Analcime	Calcite	Clay	Clinozoisite	Copper	Corundum	Descloizite	Epidote	Feldspar
Marcasite	Natrolite	None	Not in a structural group	Pectolite	Prehnite	Pyroxene	Quartz	Rocksalt	Smectite-vermiculite
Spinel	Stilbite	Talc	Titanite

Albite ()*	Analcime ()*	Anorthite ()*	Anthophyllite ()*	Augite ()*
Calcite ()*	Chalcocite ()*	Copper ()*	Diopside ()*	Djurleite ()*
Enstatite ()*	Epidote ()*	Galena ()*	Ilmenite ()*	Kyanite ()*
Magnetite ()*	Marcasite ()*	Montmorillonite ()*	Mottramite ()*	Natrolite ()*
Orthoclase ()*	Pectolite ()*	Prehnite ()*	Quartz ()*	Scolecite ()*
Sillimanite ()*	Stevensite ()*	Stilbite-Ca ()*	Talc ()*	Titanite ()*

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 Cu Fe H K Mg Na O Pb S Si Ti V

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Amphibole Analcime Calcite Clay Clinozoisite Copper Corundum Descloizite Epidote Feldspar
Marcasite Natrolite None Not in a structural group Pectolite Prehnite Pyroxene Quartz Rocksalt Smectite-vermiculite
Spinel Stilbite Talc Titanite

30 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	1	118885	8803
Analcime ()*	Analcime	Na(AlSi₂O₆)·H₂O	3	118882,118889,118890	1627
Anorthite ()*	Feldspar	Ca(Al₂Si₂O₈)	2	118880,118882	1036
Anthophyllite ()*	Amphibole	Mg₂Mg₅Si₈O₂₂(OH)₂	1	118885	718
Augite ()*	Pyroxene	(Ca,Mg,Fe)₂Si₂O₆	1	118878	2060
Calcite ()*	Calcite	Ca(CO₃)	4	118882,118890,118892,118893	27770
Chalcocite ()*	None	Cu₂S	1	118893	5707
Copper ()*	Copper	Cu	2	118880,118893	3846
Diopside ()*	Pyroxene	CaMgSi₂O₆	5	118877,118878,118880,118883,118891	4135
Djurleite ()*	None	Cu₃₁S₁₆	1	118882	300
Enstatite ()*	Pyroxene	Mg₂Si₂O₆	2	118880,118882	944
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	1	118889	8173
Galena ()*	Rocksalt	PbS	1	118882	24243
Ilmenite ()*	Corundum	Fe²⁺Ti⁴⁺O₃	3	118883,118884,118886	5433
Kyanite ()*	Not in a structural group	Al₂OSiO₄	1	118885	1507
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	2	118882,118883	14899
Marcasite ()*	Marcasite	FeS₂	1	118882	5674
Montmorillonite ()*	Clay Smectite-vermiculite	(Na,Ca)_0.3(Al,Mg)₂Si₄O₁₀(OH)₂·nH₂O	1	118882	1508
Mottramite ()*	Descloizite	PbCu(VO₄)(OH)	1	118882	362
Natrolite ()*	Natrolite	Na₂(Si₃Al₂)O₁₀·2H₂O	2	118879,118882	1236
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	2	118880,118882	2349
Pectolite ()*	Pectolite	NaCa₂Si₃O₈(OH)	2	118882,118890	363
Prehnite ()*	Prehnite	Ca₂Al(Si₃Al)O₁₀(OH)₂	3	118880,118882,118890	1898
Quartz ()*	Quartz	SiO₂	2	118881,118882	61156
Scolecite ()*	Natrolite	Ca(Si₃Al₂)O₁₀·3H₂O	1	118882	390
Sillimanite ()*	Not in a structural group	Al₂SiO₅	1	118885	1516
Stevensite ()*	Clay	(Ca,Na)_xMg_3-ySi₄O₁₀(OH)₂	1	118882	57
Stilbite-Ca ()*	Stilbite	NaCa₄(Si₂₇Al₉)O₇₂·28H₂O	1	118882	268
Talc ()*	Clay Talc	Mg₃Si₄O₁₀(OH)₂	4	118877,118880,118886,118888	3337
Titanite ()*	Titanite	CaTi(SiO₄)O	1	118886	4899

No ages have been assigned to this locality yet.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...