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, Ashover, Derbyshire, England, UK

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

mindat Locality ID: 207021
mindat URL: http://www.mindat.org/loc-207021.html

Tectonic Settings:

Total number of sublocalities beneath "Milltown, Ashover, Derbyshire, England, UK": 7
Total number of bottom-level sublocalities: 7

Number of Child Localities: 7
Child Localities:
Clay Cross Mine
Fall Hill Quarry
Fallgate Borehole
Fallgate Quarry
Milltown Quarry
New Milltown Quarry
Stars Wood

Latitude: 53°9'18"N
Longitude: 1°28'18"W
Decimal Degree (lat, lon): 53.155,-1.4716666666667

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.

Apatite	Aragonite	Baryte	Calcite	Chalcopyrite	Clay	Cristobalite	Diaspore	Ettringite	Fluorite
Gypsum	Marcasite	Millerite	None	Not in a structural group	Oxalate	Palygorskite	Pyrite	Quartz	Rocksalt
Rutile	Sphalerite	Sulphur	Wurtzite

Anglesite ()*	Ashoverite ()*	Baryte ()*	Calcite ()*	Cerussite ()*
Chalcopyrite ()*	Dolomite ()*	Ettringite ()*	Fluorite ()*	Galena ()*
Goethite ()*	Greenockite ()*	Gypsum ()*	Hawleyite ()*	Hemimorphite ()*
Hydrocerussite ()*	Hydrozincite ()*	Litharge ()*	Marcasite ()*	Massicot ()*
Millerite ()*	Palygorskite ()*	Pyrite ()*	Pyrolusite ()*	Pyromorphite ()*
Quartz ()*	Sidpietersite ()*	Smithsonite ()*	Sphalerite ()*	Sulphur ()*
Sweetite ()*	Weddellite ()*	Wülfingite ()*	Wurtzite ()*

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 Cl Cu F Fe H Mg Mn Ni O P Pb S Si Zn

Elements from minerals reported directly at this locality:

Structural Groups for minerals in this locality:
Apatite Aragonite Baryte Calcite Chalcopyrite Clay Cristobalite Diaspore Ettringite Fluorite
Gypsum Marcasite Millerite None Not in a structural group Oxalate Palygorskite Pyrite Quartz Rocksalt
Rutile Sphalerite Sulphur Wurtzite

34 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of Sublocalities containing mineral	LOCALITY IDs, not mindat ids	# of localities containing mineral
Anglesite ()*	Baryte	Pb(SO₄)	252	174	1	119812	2734
Ashoverite ()*	None	Zn(OH)₂	0	0	1	119812	6
Baryte ()*	Baryte	Ba(SO₄)	346.7	0	3	119809,119812,119814	11547
Calcite ()*	Calcite	Ca(CO₃)	346.7	0	2	119812,119813	27770
Cerussite ()*	Aragonite	Pb(CO₃)	252	174	1	119812	4979
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	346.7	0	1	119809	27198
Dolomite ()*	None	CaMg(CO₃)₂	346.7	0	1	119809	9895
Ettringite ()*	Ettringite	Ca₆Al₂(SO₄)₃(OH)₁₂·27H₂O	346.7	0	1	119812	93
Fluorite ()*	Fluorite	CaF₂	252	174	5	119808,119809,119812,119813,119814	9617
Galena ()*	Rocksalt	PbS	252	174	3	119809,119812,119813	24243
Goethite ()*	Diaspore	FeO(OH)	346.7	0	1	119809	7437
Greenockite ()*	Wurtzite	CdS	346.7	0	2	119809,119812	717
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	346.7	0	2	119809,119812	6890
Hawleyite ()*	Sphalerite	CdS	346.7	0	1	119809	62
Hemimorphite ()*	Not in a structural group	Zn₄(Si₂O₇)(OH)₂·H₂O	0	0	1	119812	1689
Hydrocerussite ()*	None	Pb₃(CO₃)₂(OH)₂	0	0	1	119812	201
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	0	0	2	119809,119812	1066
Litharge ()*	None	PbO	252	174	1	119812	139
Marcasite ()*	Marcasite	FeS₂	346.7	0	1	119809	5674
Massicot ()*	None	PbO	346.7	0	1	119812	202
Millerite ()*	Millerite	NiS	346.7	0	1	119809	1066
Palygorskite ()*	Palygorskite Clay	(Mg,Al)₂Si₄O₁₀(OH)·4H₂O	0	0	1	119812	306
Pyrite ()*	Pyrite	FeS₂	346.7	0	3	119809,119812,119813	39462
Pyrolusite ()*	Rutile	MnO₂	346.7	0	1	119809	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	346.7	0	1	119809	1725
Quartz ()*	Quartz	SiO₂	346.7	0	2	119809,119812	61156
Sidpietersite ()*	None	Pb²⁺₄(S₂O₃)O₂(OH)₂	346.7	0	1	119812	3
Smithsonite ()*	Calcite	Zn(CO₃)	0	0	2	119809,119812	2473
Sphalerite ()*	Sphalerite	ZnS	252	174	3	119809,119812,119813	21482
Sulphur ()*	Sulphur	S	252	174	1	119812	2045
Sweetite ()*	None	Zn(OH)₂	0	0	1	119812	4
Weddellite ()*	Oxalate	Ca(C₂O₄)·2H₂O	0	0	2	119809,119812	32
Wülfingite ()*	Cristobalite	Zn(OH)₂	0	0	1	119812	5
Wurtzite ()*	Wurtzite	ZnS	346.7	0	1	119809	372

Locality Notes from all Ages at Locality:

Age ID	Locality Notes
Michelle_551	Near-surface occurrence of weddellite at a former limestone quarry. Weddellite forms as the oxalic acid from lichen interact with the limestone/calcite.
Michelle_727	Ashover-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_807	The 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_808	The 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_809	The 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_810	The Cawdor Shale
Michelle_811	The Namurian age Ashover Grits include siltstone, mudstone and gritstone.
Michelle_812	Pb-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_813	The 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 ID	Max Age (Ma)	Min Age (Ma)	Age as listed in reference	Dating Method	Age Interpret	Prioritized?	Minerals explicitely stated as having this age	MinDat Locality ID	Dated Locality (Max Age)	Location as listed in reference	Reference	Reference ID	Age Notes
Michelle_551	0	0	Recent		Age of weddellite mineralization	high	Weddellite	1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Weddellite occurs due to the interaction of surface lichen and limestone/calcite.
Michelle_727	280	280	280		Uplift of Derbyshire Dome			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Uplift of Derbyshire Dome
Michelle_807	346.7	330.9	Visean	Stratigraphy	Age of Fallgate Volcanics			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of Fallgate Volcanics
Michelle_808	346.7	330.9	Visean	Stratigraphy	Age of Matlock Limestone			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of Matlock Limestone
Michelle_809	346.7	330.9	Visean	Stratigraphy	Age of Cawdor Limestone			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of Cawdor Limestone
Michelle_810	346.7	330.9	Visean	Stratigraphy	Age of Cawdor Shales			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of Cawdor Shales
Michelle_811	326	313	Namurian	Stratigraphy	Age of siltstone, mudstone and gritstone			1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of siltstone, mudstone and gritstone
Michelle_812	252	174	Permo-Triassic, Early Jurassic		Age of Mississippi Valley Type mineralization		Anglesite, Cerussite, Fluorite, Galena, Litharge, Sphalerite, Sulphur	1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Age of Mississippi Valley Type mineralization
Michelle_813	0	0	Anthropogenic		Possibly anthropogenic	high	Ashoverite, Hemimorphite, Hydrocerussite, Hydrozincite, Palygorskite, Smithsonite, Sweetite, Wulfingite	1482	Milltown Quarry, Milltown, Ashover, Derbyshire, England, UK	Milltown Quarry	Rust (1991)	UJMM10_14	Mineralization 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.

Sample	Source Locality	Reference URL

All locality data graciously provided by mindat.org

All age data...