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Boulby Mine, Loftus, Redcar and Cleveland, North Yorkshire, England, UKi
Regional Level Types
Boulby MineMine
LoftusCivil Parish
Redcar and ClevelandDistrict
North YorkshireCounty
EnglandConstituent Country
UKCountry

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Key
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Latitude & Longitude (WGS84):
54° 33' 14'' North , 0° 49' 23'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
NZ761183
Locality type:
Nearest Settlements:
PlacePopulationDistance
Easington923 (2017)1.8km
Staithes826 (2018)2.1km
Hinderwell618 (2018)3.7km
Loftus4,824 (2017)4.6km
Skinningrove1,606 (2017)5.1km


Potash and salt mine. Evaporite salt and potash deposits of the Zechstein formation. The borates were found underground. Located NW of Whitby.

Regions containing this locality

Eurasian PlateTectonic Plate
British IslesGroup of Islands
South-East England Sedimentary Area, England, UKGeologic Region
Yorkshire, England, UKHistoric County
North York Moors National Park, England, UKNational Park

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


22 valid minerals.

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:

Anhydrite
Formula: CaSO4
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Embrey, P.G. (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Woods, P. J. E. (1979). The geology of Boulby mine. Economic Geology, 74(2), 409-418.; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Aphthitalite
Formula: (K,Na)3Na(SO4)2
Reference: Handbook of Mineralogy
Boracite
Formula: Mg3(B7O13)Cl
Reference: BMS Collection; UK Journal of Mines and Minerals, No. 14 p4-7; Peter G. Embrey (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine 42:169-177; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Boracite var: Ferroan Boracite
Formula: (Mg,Fe)3(B7O13)Cl
Reference: John K. Milne, Michael J. Saunders and Peter J. E. Woods (1977) Iron-Boracite from the English Zechstein. Mineralogical Magazine, vol. 41, n° 319, 404-406; Embrey, P.G. (1978) Fourth supplementary list of British minerals. Mineralogical Magazine vol. 42, n° 322: 169-177.; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Carnallite
Formula: KMgCl3 · 6H2O
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Chalcopyrite
Formula: CuFeS2
Reference: BMS Collection
Congolite
Formula: (Fe2+,Mg)3(B7O13)Cl
Description: (Previously considered to be "ericaite".)
Reference: Bart Cannon analyses
Dolomite
Formula: CaMg(CO3)2
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Ericaite ?
Formula: Fe2+3(B7O13)Cl
Description: Some (all?) "ericaites" from Boulby are really trembathite.
Reference: [UK Journal of Mines and Minerals, No. 14 p7]; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Gypsum
Formula: CaSO4 · 2H2O
Reference: Woods, P. J. E. (1979). The geology of Boulby mine. Economic Geology, 74(2), 409-418.
Halite
Formula: NaCl
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Woods, P. J. E. (1979). The geology of Boulby mine. Economic Geology, 74(2), 409-418.; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Hematite
Formula: Fe2O3
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Hilgardite
Formula: Ca2B5O9Cl · H2O
Reference: BMS Collection hilgardite-1TC; UK Journal of Mines and Minerals, No. 14 p4-7; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
'Hilgardite-3Tc'
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Kieserite
Formula: MgSO4 · H2O
Reference: No reference listed
Magnesite
Formula: MgCO3
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Polyhalite
Formula: K2Ca2Mg(SO4)4 · 2H2O
Reference: http://rruff.geo.arizona.edu/doclib/hom/polyhalite.pdf.
Pyrite
Formula: FeS2
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Quartz
Formula: SiO2
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Sulfoborite
Formula: Mg3[B(OH)4]2(SO4)(OH,F)2
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Sylvite
Formula: KCl
Reference: UK Journal of Mines and Minerals, No. 14 p4-7; Embrey, P.G. (1978) Fourth Supplementary List of British Minerals. Mineralogical Magazine, vol. 42, n° 322, 169-177.; Woods, P. J. E. (1979). The geology of Boulby mine. Economic Geology, 74(2), 409-418.; Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Talc
Formula: Mg3Si4O10(OH)2
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Trembathite
Formula: (Mg,Fe)3(B7O13)Cl
Description: (Old labels may say "ericaite".)
Reference: J.W. Anthony, R.A. Bideaux, K.W. Bladh, M.C. Nichols: Handbook of Mineralogy, Vol. V (2003)
'Veatchite-1M'
Formula: Sr2B11O16(OH)5 · H2O
Reference: Milne, J. K. (1978). The potash deposits and their associates in the area of the Boulby mine, Cleveland. PhD thesis University of Edinburgh
Volkovskite
Formula: KCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
Description: Volkovskite here is composed of intergrown bladed crystals of glassy and gemmy, nearly colorless , crystals reaching 2.5 cm in length. They are emplaced on a mass of intergrown, lustrous, salmon-colored hilgardite, with crystals to 8 mm. The single find was of no more than a few dozen good quality specimens that were recovered by a miner a few years ago.
Reference: Rob lavinsky

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Group 3 - Halides
Carnallite3.BA.10KMgCl3 · 6H2O
Halite3.AA.20NaCl
Sylvite3.AA.20KCl
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2
Magnesite5.AB.05MgCO3
Group 6 - Borates
Boracite6.GA.05Mg3(B7O13)Cl
var: Ferroan Boracite6.GA.05(Mg,Fe)3(B7O13)Cl
Congolite6.GA.10(Fe2+,Mg)3(B7O13)Cl
Ericaite ?6.GA.05Fe2+3(B7O13)Cl
Hilgardite6.ED.05Ca2B5O9Cl · H2O
Sulfoborite6.AC.55Mg3[B(OH)4]2(SO4)(OH,F)2
Trembathite6.GA.10(Mg,Fe)3(B7O13)Cl
Volkovskite6.EC.20KCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Anhydrite7.AD.30CaSO4
Aphthitalite7.AC.35(K,Na)3Na(SO4)2
Gypsum7.CD.40CaSO4 · 2H2O
Kieserite7.CB.05MgSO4 · H2O
Polyhalite7.CC.65K2Ca2Mg(SO4)4 · 2H2O
Group 9 - Silicates
Talc9.EC.05Mg3Si4O10(OH)2
Unclassified Minerals, Rocks, etc.
'Hilgardite-3Tc'-
'Veatchite-1M'-Sr2B11O16(OH)5 · H2O

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
Group 9 - NORMAL HALIDES
AX
Halite9.1.1.1NaCl
Sylvite9.1.1.2KCl
Group 11 - HALIDE COMPLEXES
AmBX3
Carnallite11.1.2.1KMgCl3 · 6H2O
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Magnesite14.1.1.2MgCO3
AB(XO3)2
Dolomite14.2.1.1CaMg(CO3)2
Group 25 - ANHYDROUS BORATES CONTAINING HYDROXYL OR HALOGEN
Hexaborates
Boracite25.6.1.1Mg3(B7O13)Cl
Congolite25.6.2.1(Fe2+,Mg)3(B7O13)Cl
Ericaite ?25.6.1.2Fe2+3(B7O13)Cl
Trembathite25.6.2.2(Mg,Fe)3(B7O13)Cl
Group 26 - HYDRATED BORATES CONTAINING HYDROXYL OR HALOGEN
Pentaborates
Hilgardite26.5.14.1Ca2B5O9Cl · H2O
Volkovskite26.5.16.1KCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
Group 27 - COMPOUND BORATES
Miscellaneous
Sulfoborite27.1.5.1Mg3[B(OH)4]2(SO4)(OH,F)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
A2XO4
Aphthitalite28.2.2.1(K,Na)3Na(SO4)2
AXO4
Anhydrite28.3.2.1CaSO4
Group 29 - HYDRATED ACID AND NORMAL SULFATES
AmBn(XO4)p·xH2O, with (m+n):p < 3:2 and > 1:1
Polyhalite29.4.5.1K2Ca2Mg(SO4)4 · 2H2O
AXO4·xH2O
Gypsum29.6.3.1CaSO4 · 2H2O
Kieserite29.6.2.1MgSO4 · H2O
Group 71 - PHYLLOSILICATES Sheets of Six-Membered Rings
Sheets of 6-membered rings with 2:1 layers
Talc71.2.1.3Mg3Si4O10(OH)2
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
Boracite
var: Ferroan Boracite
-(Mg,Fe)3(B7O13)Cl
'Hilgardite-3Tc'-
'Veatchite-1M'-Sr2B11O16(OH)5 · H2O

List of minerals for each chemical element

HHydrogen
H CarnalliteKMgCl3 · 6H2O
H HilgarditeCa2B5O9Cl · H2O
H KieseriteMgSO4 · H2O
H TalcMg3Si4O10(OH)2
H PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
H Veatchite-1MSr2B11O16(OH)5 · H2O
H SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
H GypsumCaSO4 · 2H2O
H VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
BBoron
B BoraciteMg3(B7O13)Cl
B HilgarditeCa2B5O9Cl · H2O
B Trembathite(Mg,Fe)3(B7O13)Cl
B Congolite(Fe2+,Mg)3(B7O13)Cl
B Veatchite-1MSr2B11O16(OH)5 · H2O
B SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
B VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
B Boracite (var: Ferroan Boracite)(Mg,Fe)3(B7O13)Cl
B EricaiteFe32+(B7O13)Cl
CCarbon
C MagnesiteMgCO3
C DolomiteCaMg(CO3)2
OOxygen
O BoraciteMg3(B7O13)Cl
O CarnalliteKMgCl3 · 6H2O
O HilgarditeCa2B5O9Cl · H2O
O KieseriteMgSO4 · H2O
O MagnesiteMgCO3
O Trembathite(Mg,Fe)3(B7O13)Cl
O TalcMg3Si4O10(OH)2
O PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
O DolomiteCaMg(CO3)2
O AnhydriteCaSO4
O HematiteFe2O3
O Congolite(Fe2+,Mg)3(B7O13)Cl
O QuartzSiO2
O Veatchite-1MSr2B11O16(OH)5 · H2O
O SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
O GypsumCaSO4 · 2H2O
O VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
O Aphthitalite(K,Na)3Na(SO4)2
O Boracite (var: Ferroan Boracite)(Mg,Fe)3(B7O13)Cl
O EricaiteFe32+(B7O13)Cl
FFluorine
F SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
NaSodium
Na HaliteNaCl
Na Aphthitalite(K,Na)3Na(SO4)2
MgMagnesium
Mg BoraciteMg3(B7O13)Cl
Mg CarnalliteKMgCl3 · 6H2O
Mg KieseriteMgSO4 · H2O
Mg MagnesiteMgCO3
Mg Trembathite(Mg,Fe)3(B7O13)Cl
Mg TalcMg3Si4O10(OH)2
Mg PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
Mg DolomiteCaMg(CO3)2
Mg SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
Mg Boracite (var: Ferroan Boracite)(Mg,Fe)3(B7O13)Cl
SiSilicon
Si TalcMg3Si4O10(OH)2
Si QuartzSiO2
SSulfur
S KieseriteMgSO4 · H2O
S ChalcopyriteCuFeS2
S PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
S AnhydriteCaSO4
S PyriteFeS2
S SulfoboriteMg3[B(OH)4]2(SO4)(OH,F)2
S GypsumCaSO4 · 2H2O
S Aphthitalite(K,Na)3Na(SO4)2
ClChlorine
Cl BoraciteMg3(B7O13)Cl
Cl CarnalliteKMgCl3 · 6H2O
Cl HaliteNaCl
Cl HilgarditeCa2B5O9Cl · H2O
Cl SylviteKCl
Cl Trembathite(Mg,Fe)3(B7O13)Cl
Cl Congolite(Fe2+,Mg)3(B7O13)Cl
Cl VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
Cl Boracite (var: Ferroan Boracite)(Mg,Fe)3(B7O13)Cl
Cl EricaiteFe32+(B7O13)Cl
KPotassium
K CarnalliteKMgCl3 · 6H2O
K SylviteKCl
K PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
K VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
K Aphthitalite(K,Na)3Na(SO4)2
CaCalcium
Ca HilgarditeCa2B5O9Cl · H2O
Ca PolyhaliteK2Ca2Mg(SO4)4 · 2H2O
Ca DolomiteCaMg(CO3)2
Ca AnhydriteCaSO4
Ca GypsumCaSO4 · 2H2O
Ca VolkovskiteKCa4[B5O8OH]4[B(OH)3]2Cl · 4H2O
FeIron
Fe ChalcopyriteCuFeS2
Fe Trembathite(Mg,Fe)3(B7O13)Cl
Fe HematiteFe2O3
Fe Congolite(Fe2+,Mg)3(B7O13)Cl
Fe PyriteFeS2
Fe Boracite (var: Ferroan Boracite)(Mg,Fe)3(B7O13)Cl
Fe EricaiteFe32+(B7O13)Cl
CuCopper
Cu ChalcopyriteCuFeS2
SrStrontium
Sr Veatchite-1MSr2B11O16(OH)5 · H2O

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 Cretaceous
66 - 100.5 Ma



ID: 3191056
Mesozoic sedimentary rocks

Age: Late Cretaceous (66 - 100.5 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]

Aalenian - Rhaetian
170.3 - 208.5 Ma



ID: 2025564
Lias Group

Age: Mesozoic (170.3 - 208.5 Ma)

Stratigraphic Name: Lias Group

Lithology: Mudstone, siltstone, limestone and sandstone

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

Early Jurassic
174.1 - 201.3 Ma



ID: 3141634
Early Jurassic claystone

Age: Early Jurassic (174.1 - 201.3 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

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Milne, J.K. (1978) The potash deposits and their associates in the area of the Boulby mine, Cleveland. Ph.D. thesis University of Edinburgh.
Woods, P.J.E. (1979) The geology of Boulby mine. Economic Geology, 74(2), 409-418.
Talbot, C.J., Tully, C.P., and Woods, P.J.E. (1982) The structural geology of Boulby (potash) mine, Cleveland, United Kingdom. Tectonophysics, 85(3-4), 167-204.
Green, D.L. and Freier, M.D. (1994) Borate nodules from the English Zechstein at Boulby Mine, Cleveland. UK Journal of Mines and Minerals, 14, 4-8.
Green, D.I. and Freier, M.D. (1996) The Boulby Mine. The Mineralogical Record, 27(3), 163.
Green, D.I. and Freier, M.D. (2010) The Boulby mine. The Mineralogical Record, 41(1), S53-S53.

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