Mineral Evolution Database

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

Mineral locality data provided by mindat.org

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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:
Wheal Bungay, St Agnes, Cornwall, England, UK

Oldest recorded age at locality: 291.8
Youngest recorded age at locality: 262

mindat Locality ID: 191350
mindat URL: http://www.mindat.org/loc-191350.html

Tectonic Settings:

Total number of sublocalities beneath "Wheal Bungay, St Agnes, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°18'45"N
Longitude: 5°13'46"W
Decimal Degree (lat, lon): 50.3125,-5.2294444444444

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.

Fluorite	None	Rutile

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: Ca F O Sn

Elements from minerals reported directly at this locality: Ca F O Sn

Structural Groups for minerals in this locality:
Fluorite None Rutile

2 IMA Minerals at location:

Cassiterite ()*	Fluorite ()*

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
Cassiterite ()*	Rutile	SnO₂	291.8	262	0		5171
Fluorite ()*	Fluorite	CaF₂	291.8	262	0		9617

13 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	Dated Mineral	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Lucy_070	289	279	284 ± 5	K-Ar		muscovite		Muscovite	191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Wheal Bungay	Halliday (1980)	10.2113/gsecongeo.75.5.752	EG75_752
Lucy_132a	289	279	284 ± 5	K/Ar	Previous K/Ar determination				191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Wheal Bungay Mine	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_132h	283	274.2	278.6 ± 4.4	K/Ar	New K/Ar determination		197		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Centre of Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_132i	291.8	282.8	287.3 ± 4.5	K/Ar	New K/Ar determination		197		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Centre of Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_132k	275.9	266.9	271.4 ± 4.5	K/Ar	New K/Ar determination				191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064	Arithmetic mean ± standard error of the mean for averaged of data for each sample except 141
Lucy_138e	278.9	270.1	274.5 ± 4.3	K/Ar	New K/Ar determination		206		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_138f	270.6	262	266.3 ± 4.3	K/Ar	New K/Ar determination		213		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_138g	276.1	267.5	271.8 ± 4.3	K/Ar	New K/Ar determination		214		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_138h	271.7	263.1	267.4 ± 4.3	K/Ar	New K/Ar determination		218		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_138i	279.1	270.3	274.7 ± 4.4	K/Ar	New K/Ar determination		221		191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064
Lucy_138j	271.4	270.4	270.9 ± 1.8	K/Ar	New K/Ar determination				191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064	Arithmetic mean of 5 samples
Lucy_144g	276.3	272.1	274.2 ± 2.1	K/Ar	New K/Ar ages of Kaolinized granite				191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Goonbarrow China Pit	Bray and Spooner (1983)	10.1144/GSL.SP.1964.001.01.15	EG78_1064	Arithmetic mean of all samples of Kaolinized Granite at Goonbarrow China Clay Pit omitting 265 sample age of 249.9 ± 4.0 which was judged as erroneous.
Lucy_224	283	273	278 ± 5	K-Ar	Age of St Agnes Granite	muscovite		Muscovite	191350	Wheal Bungay, St Agnes, Cornwall, England, UK	Wheal Bungay	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	New ages on the granites and derived rocks

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...