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:
Trolvis Quarry, Longdowns, Stithians, Cornwall, England, UK

Oldest recorded age at locality: 294
Youngest recorded age at locality: 276

mindat Locality ID: 1061
mindat URL: http://www.mindat.org/loc-1061.html

Tectonic Settings:

Total number of sublocalities beneath "Trolvis Quarry, Longdowns, Stithians, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°10'3"N
Longitude: 5°9'44"W
Decimal Degree (lat, lon): 50.1675,-5.1622222222222

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.

Apatite	Fluorite	Monazite	None	Not in a structural group	Pyrite	Quartz	Sphalerite	Tourmaline

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 B Be Ca Ce F Fe H Na O P S Si Zn

Elements from minerals reported directly at this locality: Al B Be Ca Ce F Fe H Na O P S Si Zn

Structural Groups for minerals in this locality:
Apatite Fluorite Monazite None Not in a structural group Pyrite Quartz Sphalerite Tourmaline

8 IMA Minerals at location:

Bertrandite ()*	Fluorapatite ()*	Fluorite ()*	Monazite-(Ce) ()*	Pyrite ()*
Quartz ()*	Schorl ()*	Sphalerite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Bertrandite ()*	Not in a structural group	Be₄Si₂O₇(OH)₂	294	276	606
Fluorapatite ()*	Apatite	Ca₅(PO₄)₃F	294	276	2740
Fluorite ()*	Fluorite	CaF₂	294	276	9617
Monazite-(Ce) ()*	Monazite	Ce(PO₄)	294	276	945
Pyrite ()*	Pyrite	FeS₂	294	276	39462
Quartz ()*	Quartz	SiO₂	294	276	61156
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	294	276	2705
Sphalerite ()*	Sphalerite	ZnS	294	276	21482

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_022a	294	276	285 ± 9	Rb-Sr data	Age granite intruded			C 1, C 1 KFeldpsar, C 1 Plag., C 1 Bio., C 1 Musc.		Yes				260361	Rosemanowas Quarry, Longdowns, Stithians, Cornwall, England, UK	Rosemanawas Quarry	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159
	Lucy_022b	292	288	290 ± 2	Rb-Sr data	C 1 mineral isochron appears to give a better estimate of the age of the Carnmenellis granite than the whole rock regression line.			C 1, C 1 KFeldpsar, C 1 Plag., C 1 Bio., C 1 Musc.		Yes				260361	Rosemanowas Quarry, Longdowns, Stithians, Cornwall, England, UK	Rosemanawas Quarry	Darbyshire et al. (1985)	10.1144/gsjgs.142.6.1159	JGSL142_1159	Circuation of hydrothermal fluids thre does not appear to have caused widespread resetting.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...