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Blue John Mine (Blue John Cavern), Castleton, Derbyshire, England, UKi
Regional Level Types
Blue John Mine (Blue John Cavern)Mine
Castleton- not defined -
DerbyshireCounty
EnglandConstituent Country
UKCounty

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Early 20th Century view of the entrance to the Blue John mine

Blue John Mine, Castleton, Derbyshire, England, UK
View of the Blue John Mine, ca. 1930.

Blue John Mine, Castleton, Derbyshire, England, UK
Latitude & Longitude (WGS84): 53° 20' 43'' North , 1° 48' 11'' West
Latitude & Longitude (decimal): 53.34528,-1.80333
GeoHash:G#: gcqxqznyg
UK National Grid Reference:SK130832
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


Natural caverns worked for ornamental fluorite, "Blue John" from the 1770's. Production was limited to about 3 tons per year of the blue fluorite (yellow fluorite and barite was left in the mine). Material was treated with resin to stabilize carving material.

Regions containing this locality

The Pennines, England, UK

Range of Mountains and Hills - 260 mineral species & varietal names listed

Peak District National Park, England, UK

National Park - 149 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


2 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

Baryte
Formula: BaSO4
Reference: Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.
'Bitumen'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
'Clay'
Reference: Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.
Fluorite
Formula: CaF2
Reference: Rocks & Min.:10:87.; Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.
Fluorite var: Blue John (FRL)
Formula: CaF2
Type Locality:
Reference: Dewey, H., and Smith, B. (1922) Special Rep. Mineral Resources G.B. 23.

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
Fluorite3.AB.25CaF2
var: Blue John (TL)3.AB.25CaF2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
Unclassified Minerals, Rocks, etc.
'Bitumen'-
Clay-

List of minerals arranged by Dana 8th Edition classification

Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Unclassified Minerals, Rocks, etc.
'Bitumen'-
'Clay'-
Fluorite
var: Blue John (FRL)
-CaF2

List of minerals for each chemical element

OOxygen
O BaryteBaSO4
FFluorine
F Fluorite (var: Blue John)CaF2
F FluoriteCaF2
SSulfur
S BaryteBaSO4
CaCalcium
Ca Fluorite (var: Blue John)CaF2
Ca FluoriteCaF2
BaBarium
Ba BaryteBaSO4

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

Late Carboniferous
298.9 - 323.2 Ma



ID: 3160893
Late Carboniferous sandstone

Age: Pennsylvanian (298.9 - 323.2 Ma)

Lithology: Major:{sandstone}, Minor{siltstone,mudstone}

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]

Early Carboniferous
323.2 - 358.9 Ma



ID: 3186080
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]

Mississippian
323.2 - 358.9 Ma



ID: 2035692
Dinantian Rocks (Undifferentiated)

Age: Mississippian (323.2 - 358.9 Ma)

Lithology: Limestone with subordinate sandstone and argillaceous rocks

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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Ford, T.D., Sarjeant, W.A.S., and Smith, M.E. (1993): The minerals of the Peak district of Derbyshire. UK Journal of Mines and Minerals 13, 16-55.
Rocks & Minerals:10:87.


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