Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Wheal Duchy, East Wheal Towan, Wheal Towan (Towan Consols), Porthtowan, St Agnes, Cornwall, England, UKi
Regional Level Types
Wheal DuchyMine (Abandoned)
East Wheal TowanMine
Wheal Towan (Towan Consols)Mine (Abandoned)
PorthtowanHamlet
St AgnesCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 17' 32'' North , 5° 12' 20'' West
Latitude & Longitude (decimal):
50.29249,-5.20566
GeoHash:
G#: gbuq1e3r5
GRN:
N34W03
UK National Grid Reference:
SW717486
Type:
Mine (Abandoned) - last checked 2025
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Mount Hawke1,511 (2017)1.2km
Saint Agnes2,820 (2014)2.3km
North Country773 (2017)5.2km
Chacewater1,226 (2017)5.2km
St. Day700 (2011)6.0km
Mindat Locality ID:
1123
Long-form identifier:
mindat:1:2:1123:8
GUID (UUID V4):
0


A small prospect, included with Wheal Towan, which was worked for copper with little success, during the 1830's. A single overgrown burrow still survives in a field to the southeast of Mingoose Farm.

List of minerals for each chemical element

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
ⓘ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
ⓘ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
ⓘ Greisenization (latest age)~280 MaCornwall, England, UK
ⓘ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
ⓘ Formation of metallized pegmatites~285 MaCornwall, England, UK
ⓘ Greisenization (earliest age)~285 MaCornwall, England, UK
ⓘ Emplacement of major plutons~295 MaCornwall, 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

Atkinson, Barry (1994) Mining Sites in Cornwall, Volume 2. Dyllansow Truran. 61 pp.
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