Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Harefield, Greater London, England, UKi
Regional Level Types
HarefieldSuburb
Greater LondonRegion
EnglandConstituent Country
UKCountry

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02787900017361177775304.jpg
Gypsum

Harefield, Greater London, England, UK
02787900017361177775304.jpg
Gypsum

Harefield, Greater London, England, UK
07888700017361177774262.jpg
Gypsum

Harefield, Greater London, England, UK
Latitude & Longitude (WGS84):
51° 35' 50'' North , 0° 29' 12'' West
Latitude & Longitude (decimal):
51.59729,-0.48692
GeoHash:
G#: gcptsbvrv
GRN:
N35W01
UK National Grid Reference:
TQ049898
Type:
Suburb - last checked 2024
Köppen climate type:
Cfb : Temperate oceanic climate
Mindat Locality ID:
445445
Long-form identifier:
mindat:1:2:445445:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Harefield, Middlesex


In the London Borough of Hillingdon. Contains the Harefield Pit, a 1.8-hectare geological Site of Special Scientific Interest within a partially infilled chalk quarry. It displays a sequence through the Upper Chalk, Reading Beds and London Clay units.

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Standard Detailed Gallery Strunz Chemical Elements

Mineral List


1 valid mineral.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

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Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘGypsum7.CD.40CaSO4 · 2H2O
Unclassified
ⓘ'Glauconite'-K0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2

List of minerals for each chemical element

HHydrogen
Hⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Hⓘ GypsumCaSO4 · 2H2O
OOxygen
Oⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
Oⓘ GypsumCaSO4 · 2H2O
MgMagnesium
Mgⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
AlAluminium
Alⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
SiSilicon
Siⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
SSulfur
Sⓘ GypsumCaSO4 · 2H2O
KPotassium
Kⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2
CaCalcium
Caⓘ GypsumCaSO4 · 2H2O
FeIron
Feⓘ GlauconiteK0.60-0.85(Fe3+,Mg,Al)2(Si,Al)4O10](OH)2

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Quaternary
   Pleistocene
ⓘ The Anglian Glaciation0.45 ± 0.03 MaGreater London, England, UK
    
   
  Paleogene
   Eocene
ⓘ London Clay depositionEocene
(49 - 56.0 Ma)		Greater London, England, UK

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
UK

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

White, Errol I. (1923) Notes on a new species of ‘Terebelloid’ and other Phenomena in the great pit at Harefield, Middlesex. Proceedings of the Geologists' Association, 34 (1) 43-46 doi:10.1016/s0016-7878(23)80021-9
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