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:
Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK

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

mindat Locality ID: 1482
mindat URL: http://www.mindat.org/loc-1482.html

Tectonic Settings:

Total number of sublocalities beneath "Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK": 1
Total number of bottom-level sublocalities: 2

Latitude: 53°9'19"N
Longitude: 1°28'24"W
Decimal Degree (lat, lon): 53.155277777778,-1.4733333333333
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 Ba C Ca Cd F Fe H Mg O Pb S Si Zn 

Elements from minerals reported directly at this locality: Al Ba C Ca Cd F Fe H Mg O Pb S Si Zn 

Structural Groups for minerals in this locality: 
AragoniteBaryteCalciteClayCristobaliteEttringiteFluoriteGypsumNoneNot in a structural group
OxalatePalygorskitePyriteQuartzRocksaltSphaleriteSulphurWurtzite

25 IMA Minerals at location:
Anglesite  (*)Ashoverite  (*)Baryte  (*)Calcite  (*)Cerussite  (*)
Ettringite  (*)Fluorite  (*)Galena  (*)Greenockite  (*)Gypsum  (*)
Hemimorphite  (*)Hydrocerussite  (*)Hydrozincite  (*)Litharge  (*)Massicot  (*)
Palygorskite  (*)Pyrite  (*)Quartz  (*)Sidpietersite  (*)Smithsonite  (*)
Sphalerite  (*)Sulphur  (*)Sweetite  (*)Weddellite  (*)Wülfingite  (*)
Mineral nameStructural GroupsIMA FormulaMax Age (Ma)Min Age (Ma)# of Sublocalities containing mineralLOCALITY IDs, not mindat ids# of localities containing mineral
Anglesite  (*)BarytePb(SO4)25217402734
Ashoverite  (*)NoneZn(OH)20006
Baryte  (*)BaryteBa(SO4)346.70011547
Calcite  (*)CalciteCa(CO3)346.70027770
Cerussite  (*)AragonitePb(CO3)25217404979
Ettringite  (*)EttringiteCa6Al2(SO4)3(OH)12·27H2O346.70093
Fluorite  (*)FluoriteCaF225217409617
Galena  (*)RocksaltPbS252174024243
Greenockite  (*)WurtziteCdS346.700717
Gypsum  (*)GypsumCa(SO4)·2H2O346.7006890
Hemimorphite  (*)Not in a structural groupZn4(Si2O7)(OH)2·H2O0001689
Hydrocerussite  (*)NonePb3(CO3)2(OH)2000201
Hydrozincite  (*)NoneZn5(CO3)2(OH)60001066
Litharge  (*)NonePbO2521740139
Massicot  (*)NonePbO346.700202
Palygorskite  (*)Palygorskite Clay(Mg,Al)2Si4O10(OH)·4H2O000306
Pyrite  (*)PyriteFeS2346.70039462
Quartz  (*)QuartzSiO2346.70061156
Sidpietersite  (*)NonePb2+4(S2O3)O2(OH)2346.7003
Smithsonite  (*)CalciteZn(CO3)0002473
Sphalerite  (*)SphaleriteZnS252174021482
Sulphur  (*)SulphurS25217402045
Sweetite  (*)NoneZn(OH)20004
Weddellite  (*)OxalateCa(C2O4)·2H2O00032
Wülfingite  (*)CristobaliteZn(OH)20005


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'.


9 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.

SampleSource LocalityReference URL

All locality data graciously provided by mindat.org

All age data...

Other copyright data...