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:
Haytor Mine, Ilsington, Teignbridge, Devon, England, UK

Oldest recorded age at locality: 298
Youngest recorded age at locality: 266

mindat Locality ID: 1520
mindat URL: http://www.mindat.org/loc-1520.html

Tectonic Settings:

Total number of sublocalities beneath "Haytor Mine, Ilsington, Teignbridge, Devon, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°34'51"N
Longitude: 3°43'59"W
Decimal Degree (lat, lon): 50.580833333333,-3.7330555555556

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	Axinite	Calcite	Gadolinite	None	Pyroxene	Quartz	Spinel

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 C Ca Fe H Mg Mn Na O Si

Elements from minerals reported directly at this locality: Al B C Ca Fe H Mg Mn Na O Si

Structural Groups for minerals in this locality:
Amphibole Axinite Calcite Gadolinite None Pyroxene Quartz Spinel

9 IMA Minerals at location:

Actinolite ()*	Axinite-(Fe) ()*	Datolite ()*	Hastingsite ()*	Johannsenite ()*
Magnetite ()*	Quartz ()*	Siderite ()*	Tremolite ()*

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Actinolite ()*	Amphibole	Ca₂(Mg_4.5-2.5Fe²⁺_0.5-2.5)Si₈O₂₂(OH)₂	298	266	3419
Axinite-(Fe) ()*	Axinite	Ca₄Fe²⁺₂Al₄[B₂Si₈O₃₀](OH)₂	298	266	260
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	298	266	498
Hastingsite ()*	Amphibole	NaCa₂(Fe²⁺₄Fe³⁺)(Si₆Al₂)O₂₂(OH)₂	298	266	209
Johannsenite ()*	Pyroxene	CaMnSi₂O₆	298	266	73
Magnetite ()*	Spinel	Fe²⁺Fe³⁺₂O₄	298	266	14899
Quartz ()*	Quartz	SiO₂	298	266	61156
Siderite ()*	Calcite	Fe(CO₃)	298	266	6417
Tremolite ()*	Amphibole	Ca₂(Mg_5.0-4.5Fe²⁺_0.0-0.5)Si₈O₂₂(OH)₂	298	266	2562

5 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Sample Source	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Lucy_194	298	298	298	K-Ar	Previous age stated, recalculated from the 305 quoted by Mayne et al.	biotite	1520	Haytor Mine, Ilsington, Teignbridge, Devon, England, UK	Haytor	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_195	276	266	271 ± 5	K-Ar	Previous stated isotopic age	biotite	1520	Haytor Mine, Ilsington, Teignbridge, Devon, England, UK	Haytor	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_196	282	272	277 ± 5	Rb-Sr	Previous stated isotopic age	biotite	1520	Haytor Mine, Ilsington, Teignbridge, Devon, England, UK	Haytor	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_197	285	275	290	K-Ar	Previous stated isotopic age	biotite	1520	Haytor Mine, Ilsington, Teignbridge, Devon, England, UK	Haytor	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)
Lucy_198	290	270	280 ± 10	K-Ar	Average of above stated previous stated isotopic age	biotite	1520	Haytor Mine, Ilsington, Teignbridge, Devon, England, UK	Haytor	Miller et al (1964)	10.1002/gj.3350040109	GJ4_105	Isotopic ages on the granites and associated rocks of South-West England, data of previous workers (in m.yrs)

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...