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Wheal Fanny, Tregajorran, Carn Brea, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 13' 17'' North , 5° 15' 50'' West
Latitude & Longitude (decimal): 50.22139,-5.26389
UK National Grid Reference:SW672409
Other regions containing this locality:Devon and Cornwall metalliferous mining district, England, UK


A small copper mine, working a NE-trending lode known as Martin's Lode which dropped into the hanging wall of Highburrow Lode of Tincroft Mine below the 120 fm level. It was developed from Roger's Shaft (called Fanny's Shaft on the Ordnance Survey map) and Fanny's Shaft (called Western Shaft on the Ordnance Survey map) which were located at a distance of about 80 yards just south of the railway line. The area is now largely obscured by building operations.

The sett was bounded to the east by Carn Brea Mine, and to the north by Tincroft Mine, with which the workings were connected underground. In 1819, Wheal Fanny broke the main beam of her pumping engine and the subsequent flooding rose to a few fathoms of the communication between the mines before the engine was repaired.

From 1815 to 1822, Wheal Fanny raised 8,450 tons of 9% copper ore. In 1818, "Wheal Fanny and Tregajorran Mine" raised 100 tons of copper ore worth £800 and tin ore worth £300 (Thomas, 1819). In 1831, after some period of inactivity, it was incorporated into Carn Brea Mine.

Mineral List


5 valid minerals.

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

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian - Carboniferous
252.17 - 358.9 Ma
Unnamed Igneous Intrusion, Carboniferous To Permian

Age: Paleozoic (252.17 - 358.9 Ma)

Lithology: Felsic-rock

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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

Thomas, R. (1819): Report on a survey of the mining district of Cornwall, from Chasewater to Camborne. John Cary (London), 78 pp.

Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 313-317.

Hamilton Jenkin, A.K. (1965): Mines and Miners of Cornwall, part X: Camborne-Illogan.

Mineral and/or Locality  
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