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

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

mindat Locality ID: 1500
mindat URL: http://www.mindat.org/loc-1500.html

Tectonic Settings:

Total number of sublocalities beneath "Fall Hill Quarry, Milltown, Ashover, Derbyshire, England, UK": 0
Total number of bottom-level sublocalities: 0

Latitude: 53°9'28"N
Longitude: 1°28'13"W
Decimal Degree (lat, lon): 53.157777777778,-1.4702777777778

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	Baryte	Calcite	Chalcopyrite	Diaspore	Fluorite	Gypsum	Marcasite	Millerite	None
Oxalate	Pyrite	Quartz	Rocksalt	Rutile	Sphalerite	Wurtzite

Baryte ()*	Chalcopyrite ()*	Dolomite ()*	Fluorite ()*	Galena ()*
Goethite ()*	Greenockite ()*	Gypsum ()*	Hawleyite ()*	Hydrozincite ()*
Marcasite ()*	Millerite ()*	Pyrite ()*	Pyrolusite ()*	Pyromorphite ()*
Quartz ()*	Smithsonite ()*	Sphalerite ()*	Weddellite ()*	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: 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: Ba C Ca Cd Cl Cu F Fe H Mg Mn Ni O P Pb S Si Zn

Structural Groups for minerals in this locality:
Apatite Baryte Calcite Chalcopyrite Diaspore Fluorite Gypsum Marcasite Millerite None
Oxalate Pyrite Quartz Rocksalt Rutile Sphalerite Wurtzite

20 IMA Minerals at location:

Mineral name	Structural Groups	IMA Formula	Max Age (Ma)	Min Age (Ma)	# of localities containing mineral
Baryte ()*	Baryte	Ba(SO₄)	346.7	0	11547
Chalcopyrite ()*	Chalcopyrite	CuFeS₂	346.7	0	27198
Dolomite ()*	None	CaMg(CO₃)₂	346.7	0	9895
Fluorite ()*	Fluorite	CaF₂	252	174	9617
Galena ()*	Rocksalt	PbS	252	174	24243
Goethite ()*	Diaspore	FeO(OH)	346.7	0	7437
Greenockite ()*	Wurtzite	CdS	346.7	0	717
Gypsum ()*	Gypsum	Ca(SO₄)·2H₂O	346.7	0	6890
Hawleyite ()*	Sphalerite	CdS	346.7	0	62
Hydrozincite ()*	None	Zn₅(CO₃)₂(OH)₆	0	0	1066
Marcasite ()*	Marcasite	FeS₂	346.7	0	5674
Millerite ()*	Millerite	NiS	346.7	0	1066
Pyrite ()*	Pyrite	FeS₂	346.7	0	39462
Pyrolusite ()*	Rutile	MnO₂	346.7	0	3106
Pyromorphite ()*	Apatite	Pb₅(PO₄)₃Cl	346.7	0	1725
Quartz ()*	Quartz	SiO₂	346.7	0	61156
Smithsonite ()*	Calcite	Zn(CO₃)	0	0	2473
Sphalerite ()*	Sphalerite	ZnS	252	174	21482
Weddellite ()*	Oxalate	Ca(C₂O₄)·2H₂O	0	0	32
Wurtzite ()*	Wurtzite	ZnS	346.7	0	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?	Age from other Locality	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	Yes	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		Yes		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		Yes		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		Yes		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		Yes		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		Yes		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		Yes		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		Yes	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	Yes	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...