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:
Derbyshire, England, UK

Oldest recorded age at locality: 346.7
Youngest recorded age at locality: 0

mindat Locality ID: 1481
mindat URL: http://www.mindat.org/loc-1481.html

Tectonic Settings:

Total number of sublocalities beneath "Derbyshire, England, UK": 368
Total number of bottom-level sublocalities: 290

Number of Child Localities: 71
Child Localities:
Aldwark
Ashford-in-the-Water
Ashleyhay (Ashley Hay)
Ashover
Aston-on-Trent (Ashton-upon-Trent)
Bakewell
Ballidon
Barlborough
Barrow-on-Trent
Blackwell Dale
Blackwell-in-the-Peak
Bonsall
Bradwell
Brampton
Brassington
Buxton
Calver
Carsington
Castleton
Chelmorton
Chesterfield
Clowne
Crich
Cromford
Darley Dale
Dore
Eaton And Alsop
Elton
Eyam
Flagg
Gratton
Great Hucklow
Great Longstone
Green Fairfield
Hartington
Hassop
Hazlebadge
Hope
Hopton
Ible
Ivonbrook Grange
Little Longstone
Litton
Matlock
Matlock Bath
Middleton
Middleton-and-Smerrill
Monyash
Nether Haddon
Over Haddon
Parwich
Peak Forest
Pike Hall
Ripley
Snelston
South Darley
South Derbyshire
Stoney Middleton
Sutton-cum-Duckmanton
Swanwick
Taddington
Tansley
Ticknall
Tideswell
Tissington
Whaley Bridge
Whitwell
Winster
Wirksworth
Wormhill
Youlgreave (Youlgrave)

Latitude: 53°10'53"N
Longitude: 1°39'31"W
Decimal Degree (lat, lon): 53.181388888889,-1.6586111111111

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: Ag Al As Au Ba C Ca Cd Cl Cu F Fe H Hg K Mg Mn Mo Na Ni O P Pb S Sb Si Sr Ti U V Zn Zr 

Elements from minerals reported directly at this locality: Al Ca Fe H K Mg Na O S Si Ti 

Structural Groups for minerals in this locality: 
AllophaneAlumAluniteAmphiboleAnalcimeApatiteAragoniteArsenopyriteBaryteBrochantite
CalciteCaledoniteChalcanthiteChalcopyriteChloriteClayCopperCorundumCristobaliteDescloizite
DevillineDiasporeDigeniteDundasiteEnargiteEttringiteFeldsparFluoriteGypsumKaolinite
LepidocrociteLinariteMalachiteMarcasiteMatlockiteMelanteriteMicaMilleriteNatroliteNickeline
NoneNot in a structural groupOxalatePalygorskitePyritePyroxeneQuartzRocksaltRutileScheelite
SerpentineSmectite-vermiculiteSphaleriteSpinelSulphurTetrahedriteTitaniteVivianiteWurtziteZircon

112 IMA Minerals at location:
Actinolite  (*)Albite  (*)Allophane  (*)Alum-(K)  (*)Analcime  (*)
Anglesite  (*)Anhydrite  (*)Anorthite  (*)Aragonite  (*)Arsenopyrite  (*)
Ashoverite  (*)Augite  (*)Aurichalcite  (*)Azurite  (*)Baryte  (*)
Beidellite  (*)Bornite  (*)Brochantite  (*)Calcite  (*)Caledonite  (*)
Celadonite  (*)Celestine  (*)Cerussite  (*)Chalcanthite  (*)Chalcocite  (*)
Chalcopyrite  (*)Chamosite  (*)Chrysocolla  (*)Chrysotile  (*)Cinnabar  (*)
Clinochlore  (*)Copper  (*)Cuprite  (*)Descloizite  (*)Digenite  (*)
Dolomite  (*)Dundasite  (*)Enargite  (*)Enstatite  (*)Ettringite  (*)
Fluorite  (*)Galena  (*)Gibbsite  (*)Goethite  (*)Gold  (*)
Graphite  (*)Greenockite  (*)Gypsum  (*)Hawleyite  (*)Hematite  (*)
Hemimorphite  (*)Hercynite  (*)Hydrocerussite  (*)Hydrozincite  (*)Jarosite  (*)
Kaolinite  (*)Lanarkite  (*)Langite  (*)Leadhillite  (*)Lepidocrocite  (*)
Linarite  (*)Litharge  (*)Maghemite  (*)Magnetite  (*)Malachite  (*)
Marcasite  (*)Massicot  (*)Matlockite  (*)Mattheddleite  (*)Melanterite  (*)
Mercury  (*)Microcline  (*)Millerite  (*)Mimetite  (*)Mogánite  (*)
Montmorillonite  (*)Muscovite  (*)Natrolite  (*)Orthoclase  (*)Palygorskite  (*)
Paragonite  (*)Phosgenite  (*)Phosphohedyphane  (*)Pyrite  (*)Pyrolusite  (*)
Pyromorphite  (*)Pyrrhotite  (*)Quartz  (*)Rhodochrosite  (*)Rosasite  (*)
Saponite  (*)Serpierite  (*)Siderite  (*)Sidpietersite  (*)Silver  (*)
Smithsonite  (*)Sphalerite  (*)Sulphur  (*)Sweetite  (*)Tenorite  (*)
Tetrahedrite-(Zn)  (*)Titanite  (*)Torbernite  (*)Uraninite  (*)Vanadinite  (*)
Vivianite  (*)Weddellite  (*)Witherite  (*)Wulfenite  (*)Wülfingite  (*)
Wurtzite  (*)Zircon  (*)
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)211201573419
Albite  (*)FeldsparNa(AlSi3O8)3092812119840,1201578803
Allophane  (*)AllophaneAl2O3(SiO2)1.3-2.0·2.5-3.0H2O2119908,119909470
Alum-(K)  (*)AlumKAl(SO4)2·12H2O112010392
Analcime  (*)AnalcimeNa(AlSi2O6)·H2O3092813119840,120030,1200821627
Anglesite  (*)BarytePb(SO4)25217417119812,119842,119843,119847,119874,119940,119944,119946,119951,119973,119982,120056,120064,120100,120142,120147,1201552734
Anhydrite  (*)Not in a structural groupCa(SO4)11198191588
Anorthite  (*)FeldsparCa(Al2Si2O8)3092812119840,1201571036
Aragonite  (*)AragoniteCa(CO3)346.709119804,119841,119925,119998,120015,120036,120049,120056,1200723250
Arsenopyrite  (*)ArsenopyriteFeAsS2119964,1199809052
Ashoverite  (*)NoneZn(OH)20011198126
Augite  (*)Pyroxene(Ca,Mg,Fe)2Si2O63092812119840,1201572060
Aurichalcite  (*)None(Zn,Cu)5(CO3)2(OH)616119847,119887,119888,119944,119990,120019,120034,120043,120052,120053,120056,120069,120096,120100,120103,120130919
Azurite  (*)Not in a structural groupCu3(CO3)2(OH)223921110119842,119864,119868,120015,120032,120053,120060,120061,120100,1201085509
Baryte  (*)BaryteBa(SO4)346.721187119801,119803,119805,119809,119812,119814,119840,119841,119842,119846,119847,119859,119860,119862,119863,119864,119866,119868,119872,119885,119887,119893,119895,119898,119899,119900,119901,119909,119911,119912,119916,119917,119920,119922,119923,119924,119926,119927,119940,119941,119942,119943,119944,119946,119951,119960,119963,119965,119966,119968,119970,119975,119982,119986,119987,119989,120003,120010,120016,120019,120028,120042,120044,120053,120056,120063,120065,120067,120076,120086,120092,120100,120103,120104,120113,120124,120130,120131,120142,120143,120144,120145,120147,120149,120150,120153,12015511547
Beidellite  (*)Clay Smectite-vermiculite(Na,Ca)0.3Al2(Si,Al)4O10(OH)2·nH2O346.70085
Bornite  (*)NoneCu5FeS411200475516
Brochantite  (*)BrochantiteCu4(SO4)(OH)63119842,120099,1201001633
Calcite  (*)CalciteCa(CO3)346.728182119800,119804,119812,119813,119816,119817,119838,119840,119842,119844,119846,119847,119860,119863,119864,119868,119884,119887,119895,119896,119900,119901,119909,119911,119912,119922,119923,119924,119925,119927,119930,119941,119944,119946,119951,119963,119965,119968,119970,119972,119980,119982,119985,119986,119989,119990,120002,120010,120016,120019,120024,120028,120032,120036,120040,120042,120045,120047,120049,120052,120053,120056,120066,120080,120086,120091,120092,120100,120102,120103,120104,120108,120113,120130,120131,120141,120142,120146,120147,120149,120150,12015527770
Caledonite  (*)CaledoniteCu2Pb5(SO4)3(CO3)(OH)61120100359
Celadonite  (*)Mica ClayKMgFe3+Si4O10(OH)21119925309
Celestine  (*)BaryteSr(SO4)11198851252
Cerussite  (*)AragonitePb(CO3)25217450119800,119801,119803,119804,119812,119821,119842,119847,119859,119872,119888,119890,119891,119896,119901,119912,119925,119927,119940,119941,119944,119950,119960,119964,119975,119982,119985,119986,119989,119992,120019,120028,120032,120044,120045,120049,120053,120054,120056,120076,120100,120103,120107,120111,120136,120142,120147,120148,120149,1201554979
Chalcanthite  (*)ChalcanthiteCu(SO4)·5H2O2119843,119951925
Chalcocite  (*)NoneCu2S3119927,120019,1201005707
Chalcopyrite  (*)ChalcopyriteCuFeS2346.721132119800,119809,119816,119846,119847,119887,119895,119912,119913,119922,119923,119927,119931,119946,119948,119951,119964,119970,119972,119990,120019,120024,120036,120044,120047,120053,120056,120100,120103,120104,120128,12013027198
Chamosite  (*)Chlorite Clay(Fe2+,Mg,Al,Fe3+)6(Si,Al)4O10(OH,O)83092814119840,119982,120103,120114577
Chrysocolla  (*)Allophane(Cu2-xAlx)H2-xSi2O5(OH)4·nH2O3092813119840,119951,1200433531
Chrysotile  (*)Serpentine ClayMg3Si2O5(OH)43092813119840,120024,120132951
Cinnabar  (*)NoneHgS2119800,1200532600
Clinochlore  (*)Chlorite ClayMg5Al(AlSi3O10)(OH)83092813119840,120103,1201571756
Copper  (*)CopperCu3119842,120039,1200473846
Cuprite  (*)Not in a structural groupCu2O3119990,120015,1200622970
Descloizite  (*)DescloizitePbZn(VO4)(OH)1120142378
Digenite  (*)DigeniteCu1.8S23921111200321027
Dolomite  (*)NoneCaMg(CO3)2346.721114119809,119872,119889,119909,119943,119951,119960,119978,120015,120016,120019,120044,120056,1201519895
Dundasite  (*)DundasitePbAl2(CO3)2(OH)4·H2O112010397
Enargite  (*)Enargite WurtziteCu3AsS41119816910
Enstatite  (*)PyroxeneMg2Si2O63092811119840944
Ettringite  (*)EttringiteCa6Al2(SO4)3(OH)12·27H2O346.70111981293
Fluorite  (*)FluoriteCaF225217498119801,119804,119805,119808,119809,119812,119813,119814,119816,119841,119842,119844,119846,119847,119855,119859,119860,119862,119864,119868,119887,119893,119894,119895,119900,119901,119906,119909,119911,119912,119915,119916,119917,119919,119920,119922,119923,119924,119925,119926,119927,119929,119940,119941,119942,119943,119944,119946,119951,119955,119960,119963,119964,119965,119966,119968,119970,119972,119982,119983,119985,119986,119987,119988,119989,119990,119991,120005,120010,120016,120028,120032,120040,120041,120042,120043,120044,120045,120049,120052,120053,120054,120056,120071,120076,120086,120092,120103,120104,120106,120112,120113,120136,120143,120147,120149,120150,1201619617
Galena  (*)RocksaltPbS25217497119800,119801,119803,119805,119809,119812,119813,119816,119817,119842,119843,119845,119846,119847,119848,119849,119859,119860,119862,119863,119864,119865,119868,119887,119891,119895,119897,119898,119899,119900,119901,119903,119904,119905,119906,119907,119909,119911,119912,119913,119920,119921,119922,119923,119924,119927,119929,119940,119941,119944,119946,119947,119962,119963,119964,119965,119966,119969,119970,119982,119986,119987,119989,119996,120008,120010,120011,120013,120016,120019,120028,120032,120040,120044,120045,120053,120054,120056,120076,120084,120088,120089,120092,120100,120103,120104,120130,120131,120138,120139,120142,120147,120148,120149,120150,120151,12015524243
Gibbsite  (*)NoneAl(OH)31119873504
Goethite  (*)DiasporeFeO(OH)346.721125119804,119809,119840,119841,119878,119879,119895,119901,119909,119912,119920,119922,119923,119927,119940,119979,120010,120044,120053,120056,120063,120080,120103,120106,1201247437
Gold  (*)CopperAu309281111984030554
Graphite  (*)NoneC11201032812
Greenockite  (*)WurtziteCdS346.72117119809,119812,119855,120032,120056,120103,120104717
Gypsum  (*)GypsumCa(SO4)·2H2O346.721116119804,119809,119812,119819,119908,119909,119940,119941,119946,119967,119970,119989,120036,120044,120056,1201046890
Hawleyite  (*)SphaleriteCdS346.70111980962
Hematite  (*)CorundumFe2O3346.721125119804,119838,119840,119841,119872,119912,119930,119940,119942,119951,119959,119960,119999,120001,120002,120003,120018,120044,120053,120065,120076,120122,120130,120131,12014314640
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O23921127119812,119842,119847,119944,119946,119965,119970,119989,120017,120019,120022,120032,120036,120038,120044,120045,120049,120053,120056,120068,120103,120104,120112,120142,120143,120147,1201491689
Hercynite  (*)SpinelFe2+Al2O43092811119840407
Hydrocerussite  (*)NonePb3(CO3)2(OH)2002119812,120043201
Hydrozincite  (*)NoneZn5(CO3)2(OH)6009119809,119812,119946,120009,120019,120032,120043,120103,1201041066
Jarosite  (*)AluniteKFe3+3(SO4)2(OH)6346.7002228
Kaolinite  (*)Clay KaoliniteAl2Si2O5(OH)42119872,1199995591
Lanarkite  (*)NonePb2O(SO4)112014297
Langite  (*)NoneCu4(SO4)(OH)6·2H2O1120100593
Leadhillite  (*)NonePb4(SO4)(CO3)2(OH)22392114120032,120044,120053,120142265
Lepidocrocite  (*)LepidocrociteFe3+O(OH)2119850,120088581
Linarite  (*)LinariteCuPb(SO4)(OH)22392114120032,120052,120053,120100987
Litharge  (*)NonePbO2521742119812,120103139
Maghemite  (*)Spinel(Fe3+0.67   0.33)Fe3+2O4346.700229
Magnetite  (*)SpinelFe2+Fe3+2O4346.72119119804,119840,119908,120024,120032,120103,120133,120143,12015714899
Malachite  (*)MalachiteCu2(CO3)(OH)223119842,119846,119847,119864,119868,119887,119888,119895,119912,119925,119946,119951,119990,120006,120032,120042,120053,120060,120061,120066,120100,120103,12013012537
Marcasite  (*)MarcasiteFeS2346.7016119804,119809,119901,119909,119927,119929,119951,119970,119975,119982,120056,120103,120106,120124,120150,1201615674
Massicot  (*)NonePbO346.701119812202
Matlockite  (*)MatlockitePbClF2119944,11994629
Mattheddleite  (*)ApatitePb5(SiO4)1.5(SO4)1.5Cl112014232
Melanterite  (*)MelanteriteFe(SO4)·7H2O3119892,119909,119957915
Mercury  (*)NoneHg1120053397
Microcline  (*)FeldsparK(AlSi3O8)11201574924
Millerite  (*)MilleriteNiS346.702119809,1201281066
Mimetite  (*)ApatitePb5(AsO4)3Cl2120077,1201251107
Mogánite  (*)NoneSiO2·nH2O111979743
Montmorillonite  (*)Clay Smectite-vermiculite(Na,Ca)0.3(Al,Mg)2Si4O10(OH)2·nH2O346.7001508
Muscovite  (*)Mica ClayKAl2(Si3Al)O10(OH)23119923,119927,12015717380
Natrolite  (*)NatroliteNa2(Si3Al2)O10·2H2O30928111198401236
Orthoclase  (*)FeldsparK(AlSi3O8)11201572349
Palygorskite  (*)Palygorskite Clay(Mg,Al)2Si4O10(OH)·4H2O001119812306
Paragonite  (*)Mica ClayNaAl2(Si3Al)O10(OH)21120157247
Phosgenite  (*)NonePb2(CO3)Cl23119944,119946,119954142
Phosphohedyphane  (*)ApatiteCa2Pb3(PO4)3Cl112014271
Pyrite  (*)PyriteFeS2346.721144119800,119804,119809,119812,119813,119816,119821,119840,119842,119887,119894,119895,119896,119908,119922,119925,119927,119940,119941,119951,119963,119970,119980,119982,119986,119991,120040,120042,120044,120047,120048,120075,120076,120086,120103,120104,120122,120128,120130,120134,120150,120151,120152,12015539462
Pyrolusite  (*)RutileMnO2346.703119809,119925,1200623106
Pyromorphite  (*)ApatitePb5(PO4)3Cl346.7020119809,119821,119827,119841,119844,119872,119876,119888,119947,119961,119985,120019,120053,120056,120104,120135,120136,120143,120147,1201491725
Pyrrhotite  (*)NickelineFe7S8346.705119804,119970,119985,120103,1201279056
Quartz  (*)QuartzSiO2346.721148119797,119798,119800,119804,119809,119812,119816,119820,119823,119838,119840,119841,119847,119855,119860,119864,119868,119872,119882,119894,119895,119896,119906,119913,119920,119925,119968,119981,119982,119985,119987,119994,120018,120024,120031,120032,120041,120044,120045,120056,120065,120070,120076,120126,120133,120150,120157,12016161156
Rhodochrosite  (*)CalciteMn(CO3)3092812119840,1199751711
Rosasite  (*)MalachiteCuZn(CO3)(OH)23120034,120052,120053454
Saponite  (*)Clay Smectite-vermiculite(Ca,Na)0.3(Mg,Fe)3(Si,Al)4O10(OH)2·4H2O3092811119840301
Serpierite  (*)DevillineCa(Cu,Zn)4(SO4)2(OH)6·3H2O1120100292
Siderite  (*)CalciteFe(CO3)7119872,119908,119913,119934,120036,120056,1200986417
Sidpietersite  (*)NonePb2+4(S2O3)O2(OH)2346.7011198123
Silver  (*)CopperAg11200245186
Smithsonite  (*)CalciteZn(CO3)23921129119799,119805,119809,119812,119842,119844,119859,119921,119927,119941,119944,119946,119970,119982,120019,120032,120036,120038,120044,120045,120046,120049,120053,120056,120070,120103,120104,120149,1201512473
Sphalerite  (*)SphaleriteZnS25217434119800,119809,119812,119813,119816,119845,119860,119863,119865,119909,119921,119923,119943,119944,119946,119963,119964,119967,119970,119972,119982,119990,120013,120016,120028,120045,120053,120076,120086,120103,120104,120130,120142,12015521482
Sulphur  (*)SulphurS25217414119812,119842,119843,119852,119909,119929,119941,119944,119947,119951,120009,120103,120104,1201512045
Sweetite  (*)NoneZn(OH)20011198124
Tenorite  (*)NoneCuO11199901101
Tetrahedrite-(Zn)  (*)TetrahedriteCu6(Cu4Zn2)Sb4S132120103,1201065317
Titanite  (*)TitaniteCaTi(SiO4)O346.7004899
Torbernite  (*)NoneCu(UO2)2(PO4)2·12H2O11201041059
Uraninite  (*)FluoriteUO211198922718
Vanadinite  (*)ApatitePb5(VO4)3Cl1120142605
Vivianite  (*)VivianiteFe2+3(PO4)2·8H2O4119887,119909,119927,119953636
Weddellite  (*)OxalateCa(C2O4)·2H2O002119809,11981232
Witherite  (*)AragoniteBa(CO3)1119863251
Wulfenite  (*)ScheelitePbMoO411119842,119843,119896,119909,119924,119941,119970,119982,120100,120147,1201491655
Wülfingite  (*)CristobaliteZn(OH)20011198125
Wurtzite  (*)WurtziteZnS346.703119809,119816,120049372
Zircon  (*)ZirconZr(SiO4)3092812119840,1201575251



Locality Notes from all Ages at Locality:
Age IDLocality Notes
Michelle_551Near-surface occurrence of weddellite at a former limestone quarry. Weddellite forms as the oxalic acid from lichen interact with the limestone/calcite.
Michelle_727Ashover-Crich anticline is associated with the uplift of the Derbyshire Dome at 280 ma. The uplift exposed the Fallgate Volcanics, Matlock and Cawdor Limestone and Cawdor Shales of Visean age, and siltstone, mudstone and gritstone beds of Namurian age.
Michelle_807The Fallgate Volcanics is exposed by the uplift of the Derbyshire Dome. This formation was visible in the Milltown Quarry on the Northwest corner as the Fallgate Tuff but is currently buried beneath slurry from fluorite workings.
Michelle_808The Matlock and Crawdor Limestone are of Visean age. These formations host the Pb-Zn-Fluorite veins of Permo-Triassic to Jurassic age. The formations were exposed by the uplift of the Derbyshire Dome.
Michelle_809The Matlock and Crawdor Limestone are of Visean age. These formations host the Pb-Zn-Fluorite veins of Permo-Triassic to Jurassic age. The formations were exposed by the uplift of the Derbyshire Dome.
Michelle_810The Cawdor Shale
Michelle_811The Namurian age Ashover Grits include siltstone, mudstone and gritstone.
Michelle_812Pb-Zn-Fluorite mineral vein and chimney deposits in the Milltown Quarry are concentrated on the Southeastern flank of the Ashover-Crich anticline. Mineral veins (rakes) include Blackwell, Mill, Spencers, Great, Woodhead and Lomas.
Michelle_813The formation of zinc hydroxide minerals described here would require a highly alkaline oxidizing environment. Such an environment could have been caused locally by the leaching of calcined limestone, itself the result of lime burning or possibly of the older pre-gunpowder mining technique of fire-setting. A relationship between the formation of the zinc hydroxides and weddellite has not been ruled out. The paper refers this as the 'zinc hydroxide zone'.


11 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
Michelle_55100Recent Age of weddellite mineralizationhigh    Weddellite 1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Weddellite occurs due to the interaction of surface lichen and limestone/calcite.
Michelle_727280280280 Uplift of Derbyshire Dome      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Uplift of Derbyshire Dome
Michelle_807346.7330.9ViseanStratigraphyAge of Fallgate Volcanics      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of Fallgate Volcanics
Michelle_808346.7330.9ViseanStratigraphyAge of Matlock Limestone      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of Matlock Limestone
Michelle_809346.7330.9ViseanStratigraphyAge of Cawdor Limestone      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of Cawdor Limestone
Michelle_810346.7330.9ViseanStratigraphyAge of Cawdor Shales      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of Cawdor Shales
Michelle_811326313NamurianStratigraphyAge of siltstone, mudstone and gritstone      1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of siltstone, mudstone and gritstone
Michelle_812252174Permo-Triassic, Early Jurassic Age of Mississippi Valley Type mineralization    Anglesite, Cerussite, Fluorite, Galena, Litharge, Sphalerite, Sulphur 1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Age of Mississippi Valley Type mineralization
Michelle_81300Anthropogenic Possibly anthropogenichigh    Ashoverite, Hemimorphite, Hydrocerussite, Hydrozincite, Palygorskite, Smithsonite, Sweetite, Wulfingite 1482Milltown Quarry, Milltown, Ashover, Derbyshire, England, UKMilltown QuarryRust (1991) UJMM10_14Mineralization is likely of post-mining age due to the calcination of limestone interacting with zinc from vein mineralization. The reference suggests an anthropogenic origin for mineralization of the zinc hydroxide zone.
Lucy_092309281295 ± 14K/ArIntruded through older (Lower Carboniferous) lavas. Olivines partly altered, otherwise freshwhole rockFM 26    1487Calton Hill Quarry, Blackwell-in-the-Peak, Derbyshire, England, UKCalton Hill QuarryFitch et al. (1964)10.1144/GSL.SP.1964.001.01.16GSL1_159Intrusive into an older volcanic complex of Lower Carboniferous age.
Lucy_085239211225 ± 14K/ArExtruded during Dibunophyllure Zone. Feldspars kaolinized, rock extensively chloritizedwhole rockFM 25    207106Masson Hill And Mines, Matlock, Derbyshire, England, UKMasson HillFitch et al. (1964)10.1144/GSL.SP.1964.001.01.15GSL1_159In the specimen analysed, the original ferro-magnesian minerals had been replaced by new chlorite and silica, and the plagioclase was somewhat kaolinized. The greater part of the previously accumulated radiogenic argon would have diffused from the rock during metasomatism and the age obtained is closely related to that of the mineralization (i.e., the formation of new chlorite) and not to that of extrusion.


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