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:
Foggintor Quarry, Princetown, Dartmoor Forest, West Devon, Devon, England, UK

Oldest recorded age at locality: 288
Youngest recorded age at locality: 274

mindat Locality ID: 295926
mindat URL: http://www.mindat.org/loc-295926.html

Tectonic Settings:

Total number of sublocalities beneath "Foggintor Quarry, Princetown, Dartmoor Forest, West Devon, Devon, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°32'36"N
Longitude: 4°1'24"W
Decimal Degree (lat, lon): 50.543333333333,-4.0233333333333

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.

Autunite	Fluorite	Meta-autunite	None	Not in a structural group	Quartz

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: C Ca Cu F H K Mg Na O P Si U

Elements from minerals reported directly at this locality: C Ca Cu F H K Mg Na O P Si U

Structural Groups for minerals in this locality:
Autunite Fluorite Meta-autunite None Not in a structural group Quartz

10 IMA Minerals at location:

Andersonite ()*	Autunite ()*	Boltwoodite ()*	Fluorite ()*	Meta-autunite ()*
Quartz ()*	Saléeite ()*	Torbernite ()*	Uraninite ()*	Uranophane-α ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Andersonite ()*	Not in a structural group	Na₂Ca(UO₂)(CO₃)₃·5-6H₂O	281	279	47
Autunite ()*	Autunite	Ca(UO₂)₂(PO₄)₂·10-12H₂O	281	279	1272
Boltwoodite ()*	None	(K,Na)(UO₂)(SiO₃OH)·1.5H₂O	281	279	67
Fluorite ()*	Fluorite	CaF₂	281	279	9617
Meta-autunite ()*	Meta-autunite	Ca(UO₂)₂(PO₄)₂·6H₂O	281	279	388
Quartz ()*	Quartz	SiO₂	281	279	61156
Saléeite ()*	None	Mg(UO₂)₂(PO₄)₂(H₂O)₁₀	281	279	95
Torbernite ()*	None	Cu(UO₂)₂(PO₄)₂·12H₂O	281	279	1059
Uraninite ()*	Fluorite	UO₂	281	279	2718
Uranophane-α ()*	None	Ca(UO₂)₂(SiO₃OH)₂·5H₂O	281	279	890

4 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Num	Age from other Locality	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Lucy_040a	281	279	280 ± 1	Rb-Sr	Preferred Age determined in study	E 38425, E 38426, E 38427, E 38429, E 38430, E 420	Yes	1620	Devon, England, UK	Dartmoor Granite	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159
Lucy_040b	280	280	280	Rb-Sr	Preliminary examindation yields age of Dartmoor as the second episode of Hercynian Magmatism.		Yes	1620	Devon, England, UK	Dartmoor Granite	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159	Statistically acceptable whole rock and/or mineral isochrons were obtained for each of the granites studies and a preliminary inspection of the tata may suggst several episodes of of Hercynian magmatism in SW England. The first, c.. 290 generated the Carnmenellis, Bodmin and St Austell granites and was succeeded some 10 Ma by the Dartmoor grantie, and finally the intrusion of the Land's End granite at 270 Ma. The emplacement of the porphyry dyke and the main phase of mineralization, would then be closely associated with the second and third magmatic episodes. However more detailed examintation of the data and comparison with other work reveals certain major discrepencies in the hypothesis.
Lucy_040c	288	274	281 ± 7	K-Ar	Previous age stated for the Dartmoor Granite		Yes	1620	Devon, England, UK	Dartmoor Granite	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159	In complete aggreement with the plateau ages of the 282 Ma for the Coombestone Tor and Gidleigh Tor.
Lucy_049	281	279	280 ± 1	Rb-Sr	Age granite intruded	E 44796		295926	Foggintor Quarry, Princetown, Dartmoor Forest, West Devon, Devon, England, UK	Foggintor Quarry	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...