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:
Trewavas Head, Rinsey, Breage, Cornwall, England, UK

Oldest recorded age at locality: 296
Youngest recorded age at locality: 270

mindat Locality ID: 866
mindat URL: http://www.mindat.org/loc-866.html

Tectonic Settings:

Total number of sublocalities beneath "Trewavas Head, Rinsey, Breage, Cornwall, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°5'17"N
Longitude: 5°21'45"W
Decimal Degree (lat, lon): 50.088055555556,-5.3625

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.

Feldspar	None	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 Fe H K Na O Si

Elements from minerals reported directly at this locality: Al B Fe H K Na O Si

Structural Groups for minerals in this locality:
Feldspar None Tourmaline

3 IMA Minerals at location:

Albite ()*	Orthoclase ()*	Schorl ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Albite ()*	Feldspar	Na(AlSi₃O₈)	296	270	8803
Orthoclase ()*	Feldspar	K(AlSi₃O₈)	296	270	2349
Schorl ()*	Tourmaline	NaFe²⁺₃Al₆(Si₆O₁₈)(BO₃)₃(OH)₃(OH)	296	270	2705

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_222	296	282	289 ± 7	K-Ar	Age of Godolphin Granite		muscovite				Muscovite			866	Trewavas Head, Rinsey, Breage, Cornwall, England, UK	Trewavas Head	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	New ages on the granites and derived rocks
	Lucy_223	290	270	280 ± 10	K-Ar	Age of Godolphin Granite		muscovite				Muscovite			866	Trewavas Head, Rinsey, Breage, Cornwall, England, UK	Trewavas Head pegmatoid	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	New ages on the granites and derived rocks

All locality data graciously provided by mindat.org

All age data...