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 Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK

Oldest recorded age at locality: 295
Youngest recorded age at locality: 249

mindat Locality ID: 4572
mindat URL: http://www.mindat.org/loc-4572.html

Tectonic Settings:

Total number of sublocalities beneath "Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 50°42'33"N
Longitude: 4°1'41"W
Decimal Degree (lat, lon): 50.709166666667,-4.0280555555556
AThis mineral is Anthropogenic.
GThis mineral is directly dated.
BThis mineral is reported as having this age.
YThis mineral is using an age reported as an element mineralization period.
OThis mineral is using an age calculated from all data at the locality.
RThe age displayed for this mineral originates from a different, non-child locality.
PThe 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.

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 Be C Ca Ce Cl Cs Cu F Fe H K Li Mg Mn Na Nb O P S Sb Si Sn Ta Ti U W 

Elements from minerals reported directly at this locality: Al As B Be C Ca Cl Cs Cu F Fe H K Li Mg Mn Na Nb O P S Sb Si Sn Ta U W 

Structural Groups for minerals in this locality: 
AmphiboleAnalcimeApatiteArsenicArsenoliteArsenopyriteAutuniteAxiniteBerylBeryllonite
CalciteChalcopyriteClayClinozoisiteColumbiteEpidoteFeldsparFluoriteGadoliniteGarnet
LöllingiteMicaNickelineNoneNot in a structural groupPalygorskitePrehnitePyritePyrochlorePyroxene
QuartzScapoliteScheeliteSmectite-vermiculiteStilbiteTitaniteTopazTourmalineWollastonite

50 IMA Minerals at location:
Actinolite  (*)Albite  (*)Amblygonite  (*)Antimony  (*)Arsenic  (*)
Arsenolite  (*)Arsenopyrite  (*)Autunite  (*)Axinite-(Fe)  (*)Bavenite  (*)
Beryl  (*)Beryllonite  (*)Calcite  (*)Chalcopyrite  (*)Columbite-(Mn)  (*)
Cordierite  (*)Datolite  (*)Diopside  (*)Elbaite  (*)Epidote  (*)
Fersmite  (*)Fluorapatite  (*)Fluorite  (*)Grossular  (*)Hedenbergite  (*)
Herderite  (*)Laumontite  (*)Löllingite  (*)Malayaite  (*)Marialite  (*)
Montebrasite  (*)Montmorillonite  (*)Muscovite  (*)Orthoclase  (*)Palygorskite  (*)
Petalite  (*)Pollucite  (*)Prehnite  (*)Pyrite  (*)Pyrrhotite  (*)
Quartz  (*)Scheelite  (*)Siderite  (*)Stibiconite  (*)Stilbite-Ca  (*)
Tantalite-(Mn)  (*)Topaz  (*)Tremolite  (*)Wollastonite  (*)Zoisite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Actinolite  (*)Amphibole   Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)228124903419
Albite  (*)FeldsparNa(AlSi3O8)28124908803
Amblygonite  (*)NoneLiAl(PO4)F2812490244
Antimony  (*)ArsenicSb2812490363
Arsenic  (*)ArsenicAs2812490379
Arsenolite  (*)ArsenoliteAs2O32812490231
Arsenopyrite  (*)ArsenopyriteFeAsS28124909052
Autunite  (*)AutuniteCa(UO2)2(PO4)2·10-12H2O28124901272
Axinite-(Fe)  (*)AxiniteCa4Fe2+2Al4[B2Si8O30](OH)22812490260
Bavenite  (*)NoneCa4Be2+xAl2-xSi9O26-x(OH)2+x (x = 0 to 1)2812490255
Beryl  (*)BerylBe3Al2Si6O1828124904286
Beryllonite  (*)BerylloniteNaBe(PO4)281249047
Calcite  (*)CalciteCa(CO3)281249027770
Chalcopyrite  (*)ChalcopyriteCuFeS2281249027198
Columbite-(Mn)  (*)ColumbiteMn2+Nb2O62812490289
Cordierite  (*)BerylMg2Al4Si5O1828124901008
Datolite  (*)GadoliniteCaB(SiO4)(OH)2812490498
Diopside  (*)PyroxeneCaMgSi2O628124904135
Elbaite  (*)TourmalineNa(Al1.5Li1.5)Al6(Si6O18)(BO3)3(OH)3(OH)2812490520
Epidote  (*)Epidote ClinozoisiteCa2(Al2Fe3+)[Si2O7][SiO4]O(OH)28124908173
Fersmite  (*)ColumbiteCaNb2O6281249083
Fluorapatite  (*)ApatiteCa5(PO4)3F28124902740
Fluorite  (*)FluoriteCaF228124909617
Grossular  (*)GarnetCa3Al2(SiO4)328124901544
Hedenbergite  (*)PyroxeneCaFe2+Si2O62812490741
Herderite  (*)GadoliniteCaBe(PO4)F281249020
Laumontite  (*)Not in a structural groupCaAl2Si4O12·4H2O28124901271
Löllingite  (*)LöllingiteFeAs22812490762
Malayaite  (*)TitaniteCaSnO(SiO4)281249040
Marialite  (*)ScapoliteNa4Al3Si9O24Cl2812490139
Montebrasite  (*)NoneLiAl(PO4)(OH)2812490200
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O28124901508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)2259249017380
Orthoclase  (*)FeldsparK(AlSi3O8)28124902349
Palygorskite  (*)Palygorskite Clay(Mg,Al)2Si4O10(OH)·4H2O2812490306
Petalite  (*)Not in a structural groupLiAlSi4O102812490124
Pollucite  (*)AnalcimeCs(Si2Al)O6·nH2O2812490140
Prehnite  (*)PrehniteCa2Al(Si3Al)O10(OH)228124901898
Pyrite  (*)PyriteFeS2281249039462
Pyrrhotite  (*)NickelineFe7S828124909056
Quartz  (*)QuartzSiO2281249061156
Scheelite  (*)ScheeliteCa(WO4)28124904894
Siderite  (*)CalciteFe(CO3)28124906417
Stibiconite  (*)PyrochloreSb3+Sb5+2O6(OH)2812490446
Stilbite-Ca  (*)StilbiteNaCa4(Si27Al9)O72·28H2O2812490268
Tantalite-(Mn)  (*)ColumbiteMn2+Ta2O62812490211
Topaz  (*)TopazAl2SiO4F228124901476
Tremolite  (*)Amphibole   Ca2(Mg5.0-4.5Fe2+0.0-0.5)Si8O22(OH)228124902562
Wollastonite  (*)WollastoniteCaSiO328124901247
Zoisite  (*)EpidoteCa2Al3[Si2O7][SiO4]O(OH)28124901025


5 Ages assigned to this locality:

Excel IDMax Age (Ma)Min Age (Ma)Age as listed in referenceDating MethodAge InterpretPrioritized?Sample SourceSample NumRun NumAge from other LocalityDated MineralMinerals explicitely stated as having this ageAge applies to these ElementsMinDat Locality IDDated Locality (Max Age)Location as listed in referenceReferenceReference DOIReference IDAge Notes
Bradley_2012_093281277279±2Rb-Sr       4572Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UKMeldon apliteMcCauley and Bradley (2014)10.3749/canmin.52.2.183CM52_183 
Lucy_051281277279 ± 2Rb-SrPreferred Age determined in study E 38443, E 38444, E 38445, E 38446, E 38447, E 384    4572Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UKMeldon QuarryDarbyshire et al. (1985)10.1144/gsjgs.142.6.1159JGSL142_1159Regression of the data yields an isochron age of 279 ± 2
Lucy_052265255260 ± 5K-ArMuch younger mica age obtained, may be acounted for argon loss.lepidolite     4572Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UKMeldon QuarryDarbyshire et al. (1985)10.1144/gsjgs.142.6.1159JGSL142_1159Using K-Ar Age on lepidolite, it was concluded that the aplite was much younger than the granite
Lucy_214259249254 ± 5K-ArAge for Dartmoor Granitemuscovite   Muscovite  4572Meldon Aplite Quarry, Okehampton Hamlets, West Devon, Devon, England, UKMeldon ApliteMiller et al (1964)10.1002/gj.3350040109GJ4_105New ages on the granites and derived rocks
Lucy_082295295295K/ArAge of cotact metamorphism   Yes  4571Meldon Quarry (British Rail Quarry; British Railways Quarry; B. R. Quarry), Okehampton Hamlets, West Devon, Devon, England, UKMeldonHawkes et al. (1978 US4_51Age of contact metamorphism from intrusion of doloritic dyke and is equated to plutons in the area

SampleSource LocalityReference URL

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