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Cot Valley, St Just, Cornwall, England, UKi
Regional Level Types
Cot ValleyValley
St JustCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Key
Latitude & Longitude (WGS84):
50° 7' 1'' North , 5° 41' 28'' West
Latitude & Longitude (decimal):
Locality type:
Köppen climate type:


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

9 valid minerals.

Detailed Mineral List:

Calcite
Formula: CaCO3
Habit: Six-sided prisms with flat tops.
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Cassiterite
Formula: SnO2
Chalcocite
Formula: Cu2S
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101
'Chlorite Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101
'Feldspar Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Fluorite
Formula: CaF2
Goethite
Formula: α-Fe3+O(OH)
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358
Hematite
Formula: Fe2O3
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 58; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Hematite var: Specularite
Formula: Fe2O3
Reference: Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 58; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101
Quartz
Formula: SiO2
Quartz var: Amethyst
Formula: SiO2
Quartz var: Jasper
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101.
Quartz var: Prase
Formula: SiO2
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 290-358; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 190
Schorl
Formula: Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Siderite
Formula: FeCO3
Reference: Reid, C., Flett, J.S., Wilkinson, B.S.N., Dixon, E.E.L., Pollard, W., and MacAlister, D.A. (1907): The Geology of the Land's End District. HMSO Publications (London), pp. 100-101.
'Tourmaline'
Formula: A(D3)G6(Si6O18)(BO3)3X3Z
Reference: Dines, H.G. (1956): The Metalliferous Mining Region of South-West England, Vol. 1, BGS Publishing.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Chalcocite2.BA.05Cu2S
Group 3 - Halides
Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Cassiterite4.DB.05SnO2
Goethite4.00.α-Fe3+O(OH)
Hematite4.CB.05Fe2O3
var: Specularite4.CB.05Fe2O3
Quartz4.DA.05SiO2
var: Amethyst4.DA.05SiO2
var: Jasper4.DA.05SiO2
var: Prase4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Siderite5.AB.05FeCO3
Group 9 - Silicates
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
Group 4 - SIMPLE OXIDES
A2X3
Hematite4.3.1.2Fe2O3
AX2
Cassiterite4.4.1.5SnO2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Calcite14.1.1.1CaCO3
Siderite14.1.1.3FeCO3
Group 61 - CYCLOSILICATES Six-Membered Rings
Six-Membered Rings with borate groups
Schorl61.3.1.10Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Feldspar Group'-
Hematite
var: Specularite
-Fe2O3
'Limonite'-(Fe,O,OH,H2O)
Quartz
var: Amethyst
-SiO2
var: Jasper-SiO2
var: Prase-SiO2
'Tourmaline'-A(D3)G6(Si6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H Limonite(Fe,O,OH,H2O)
H Goethiteα-Fe3+O(OH)
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
B TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
C SideriteFeCO3
OOxygen
O Quartz (var: Amethyst)SiO2
O CalciteCaCO3
O CassiteriteSnO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O QuartzSiO2
O TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
O SideriteFeCO3
O HematiteFe2O3
O Hematite (var: Specularite)Fe2O3
O Limonite(Fe,O,OH,H2O)
O Goethiteα-Fe3+O(OH)
O Quartz (var: Prase)SiO2
FFluorine
F FluoriteCaF2
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si Quartz (var: Amethyst)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Si QuartzSiO2
Si TourmalineA(D3)G6(Si6O18)(BO3)3X3Z
Si Quartz (var: Prase)SiO2
SSulfur
S ChalcociteCu2S
CaCalcium
Ca CalciteCaCO3
Ca FluoriteCaF2
FeIron
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe SideriteFeCO3
Fe HematiteFe2O3
Fe Hematite (var: Specularite)Fe2O3
Fe Limonite(Fe,O,OH,H2O)
Fe Goethiteα-Fe3+O(OH)
CuCopper
Cu ChalcociteCu2S
SnTin
Sn CassiteriteSnO2

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

Localities in this Region

Other Regions, Features and Areas containing this locality

British IslesGroup of Islands
Eurasian PlateTectonic Plate
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.
 
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