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Pentireglaze Mine (Pentire Glaze Mine), Polzeath, St Minver, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 34' 59'' North , 4° 54' 34'' West
Latitude & Longitude (decimal): 50.58306,-4.90944
GeoHash:G#: gbuxb2359
UK National Grid Reference:SW940799
Other regions containing this locality:Wadebridge Mining District, Cornwall, England, UK
Devon and Cornwall metalliferous mining district, England, UK
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


A lead and silver mine which worked on two lodes, a NS-trending lode (probably the northern extension of the lode worked by Polzeath Consols) and a NE-trending lode which crops out in Pengirt Cove, northwest of Pentireglaze farm. The NS-trending lode was worked from two shafts on the south side of the small valley that joins the beach at Pentireglaze Haven. An overgrown dump of the more northerly shaft remains at the northeastern edge of New Polzeath village. The NE-trending lode was opened up from Engine Shaft, immediately west of Pentireglaze farm, and from an adit at the base of the cliff. The grid reference marks the large dump at Engine Shaft. The engine house ruin that stood there was demolished around 1957.

Between 1850 and 1875, the mine produced 955 tons of 67% lead ore and 19,065 ounces of silver.


Mineral List


14 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

Early Carboniferous
323.2 - 358.9 Ma



ID: 3192903
Paleozoic sedimentary rocks

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Sedimentary 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]

Late Devonian
358.9 - 382.7 Ma



ID: 2032653
Upper Devonian Rocks (Undifferentiated)

Age: Late Devonian (358.9 - 382.7 Ma)

Lithology: Mudstone, siltstone and sandstone

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

Late Devonian
358.9 - 382.7 Ma



ID: 3145545
Late Devonian claystone

Age: Late Devonian (358.9 - 382.7 Ma)

Lithology: Claystone

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



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)
Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 2, p. 573 (also see addenda in the 1994 reprint).
Embrey & Symes (1987): Minerals of Cornwall and Devon, p. 93.
Rocks & Minerals 16, 129.

Mineral and/or Locality  
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