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Balleswidden Mine, St Just, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 7' 8'' North , 5° 39' 15'' West
Latitude & Longitude (decimal): 50.11889,-5.65444
GeoHash:G#: gbgvp7fe9
UK National Grid Reference:SW388308
Other regions containing this locality:St Just Mining District, Cornwall, England, UK
St Just Mining Region, Cornwall, England, UK
Devon and Cornwall metalliferous mining district, England, UK
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


One of the richest tin mines in the district.

In the 20th century, the dumps were largely removed for reprocessing.

The mine produced pseudomorphs of kaolinite after orthoclase, fine-grained quartz after orthoclase and cassiterite after orthoclase (Rowe & Le Neve Foster, 1879).


Mineral List

Mineral list contains entries from the region specified including sub-localities

13 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
252.17 - 298.9 Ma



ID: 3191499
Paleozoic intrusive rocks

Age: Permian (252.17 - 298.9 Ma)

Lithology: Intrusive igneous rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Permian - Carboniferous
252.17 - 358.9 Ma



ID: 2028219
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]

Ordovician
443.8 - 485.4 Ma



ID: 3130462
Ordovician granite

Age: Ordovician (443.8 - 485.4 Ma)

Lithology: Granite group

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

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


Localities in this Region
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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

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rowe, T.P. and Le Neve Foster, C. (1879) Observations on Balleswidden Mine. Transactions of the Royal Geological Society of Cornwall 10, 10-17.
Russell, A. (1920) On the occurrence of phenacite and scheelite at Wheal Cock, St. Just, Cornwall. Mineralogical Magazine, vol. 19, n° 88, 19-22. (lists wolframite from Balleswidden Mine.)
Dines, H.G. (1956) The Metalliferous Mining Region of South-West England. HMSO Publications (London), Vol. 1, pp. 100-102.

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