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:
Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton Hamlets, West Devon, Devon, England, UK

Oldest recorded age at locality: 308
Youngest recorded age at locality: 284

mindat Locality ID: 105601
mindat URL: http://www.mindat.org/loc-105601.html

Tectonic Settings:

Total number of sublocalities beneath "Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton Hamlets, West Devon, Devon, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°42'24"N
Longitude: 4°1'36"W
Decimal Degree (lat, lon): 50.706666666667,-4.0266666666667

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.

Allophane	Arsenopyrite	Chalcopyrite	Clinozoisite	Danburite	Epidote	Gadolinite	Garnet	Löllingite	Melanterite
Molybdenite	Nickeline	None	Pyrite	Pyroxene	Quartz	Scheelite	Sphalerite	Titanite	Vesuvianite
Wollastonite

Allophane ()*	Andradite ()*	Arsenopyrite ()*	Bornite ()*	Chalcopyrite ()*
Danburite ()*	Datolite ()*	Epidote ()*	Grossular ()*	Hedenbergite ()*
Löllingite ()*	Malayaite ()*	Melanterite ()*	Molybdenite ()*	Pyrite ()*
Pyrrhotite ()*	Quartz ()*	Scheelite ()*	Sphalerite ()*	Vesuvianite ()*
Wollastonite ()*

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 As B Ca Cu F Fe H Mg Mo Na O S Si Sn W Zn

Elements from minerals reported directly at this locality: Al As B Ca Cu F Fe H Mg Mo Na O S Si Sn W Zn

Structural Groups for minerals in this locality:
Allophane Arsenopyrite Chalcopyrite Clinozoisite Danburite Epidote Gadolinite Garnet Löllingite Melanterite
Molybdenite Nickeline None Pyrite Pyroxene Quartz Scheelite Sphalerite Titanite Vesuvianite
Wollastonite

21 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Allophane ()*	Allophane	Al₂O₃(SiO₂)_1.3-2.0·2.5-3.0H₂O	308	284	470
Andradite ()*	Garnet	Ca₃Fe³⁺₂(SiO₄)₃	308	284	1534
Arsenopyrite ()*	Arsenopyrite	FeAsS	308	284	9052
Bornite ()*	None	Cu₅FeS₄	308	284	5516
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	308	284	27198
Danburite ()*	Danburite	CaB₂Si₂O₈	308	284	148
Datolite ()*	Gadolinite	CaB(SiO₄)(OH)	308	284	498
Epidote ()*	Epidote Clinozoisite	Ca₂(Al₂Fe³⁺)[Si₂O₇][SiO₄]O(OH)	308	284	8173
Grossular ()*	Garnet	Ca₃Al₂(SiO₄)₃	308	284	1544
Hedenbergite ()*	Pyroxene	CaFe²⁺Si₂O₆	308	284	741
Löllingite ()*	Löllingite	FeAs₂	308	284	762
Malayaite ()*	Titanite	CaSnO(SiO₄)	308	284	40
Melanterite ()*	Melanterite	Fe(SO₄)·7H₂O	308	284	915
Molybdenite ()*	Molybdenite	MoS₂	308	284	5800
Pyrite ()*	Pyrite	FeS₂	308	284	39462
Pyrrhotite ()*	Nickeline	Fe₇S₈	308	284	9056
Quartz ()*	Quartz	SiO₂	308	284	61156
Scheelite ()*	Scheelite	Ca(WO₄)	308	284	4894
Sphalerite ()*	Sphalerite	ZnS	308	284	21482
Vesuvianite ()*	Vesuvianite	(Ca,Na)₁₉(Al,Mg,Fe)₁₃(SiO₄)₁₀(Si₂O₇)₄(OH,F,O)₁₀	308	284	1395
Wollastonite ()*	Wollastonite	CaSiO₃	308	284	1247

3 Ages assigned to this locality:

Excel ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Age from other Locality	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference DOI	Reference ID	Age Notes
Lucy_096	308	284	296 ± 12				105601	Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton Hamlets, West Devon, Devon, England, UK	Meldon	Fitch et al. (1964)	10.1144/GSL.SP.1964.001.01.16	GSL1_159	Age cited
Lucy_097	301	289	295 ± 6				105601	Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton Hamlets, West Devon, Devon, England, UK	Meldon	Fitch et al. (1964)	10.1144/GSL.SP.1964.001.01.16	GSL1_159	Age cited
Lucy_082	295	295	295	K/Ar	Age of cotact metamorphism	Yes	4571	Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton Hamlets, West Devon, Devon, England, UK	Meldon	Hawkes et al. (1978		US4_51	Age of contact metamorphism from intrusion of doloritic dyke and is equated to plutons in the area

Sample	Source Locality	Reference URL
FKM-58	Meldon Mine (Red-a-Ven Mine; Okehampton Wheal Maria; Devon Copper Mine), Okehampton Hamlets, West Devon, Devon, England, UK	https://www.rockptx.com/fkm-51-to-fkm-75/#FKM-58

All locality data graciously provided by mindat.org

All age data...