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Wheal Herland (Old Herland Mine; Manor Mine; North Wheal Herland), Rosewarne and Herland United Mines (Rosewarne and Herland Mine; incl. Wheal Fancy; Wheal Pleasure), Gwinear, Gwinear-Gwithian, Cornwall, England, UK

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Latitude & Longitude (WGS84): 50° 10' 59'' North , 5° 22' 34'' West
Latitude & Longitude (decimal): 50.18329,-5.37630
GeoHash:G#: gbujmxt4g
UK National Grid Reference:SW590370
Locality type:Mine
Köppen climate type:Cfb : Temperate oceanic climate


Wheal Herland, locally known as Manor Mine, occupied the western and central sections of the Rosewarne and Herland sett. The workings extended from NE of Drannack Mill to south of Gwinear, a distance of about 1,000 yards, and the extensive dumps between the fields in this area belong almost entirely to this mine. To the southeast, it was adjoined by Prince George Mine, to the west by Drannack Mine, and to the northwest by Wheal Fancy and Wheal Pleasure, two small 18th century workings which cannot now be identified. Though, the boundaries of the individual setts are not discernible, because plans of the workings do not exist.

Wheal Herland was first worked in 1717, and again from 1726 until 1762, but Hamilton Jenkin records that there were further small sales of ore until 1778. During this period, the mine was developed to a depth of 120 fms, and it was rich enough to install a 70 inch Newcombe pumping engine. In 1790, it was restarted under the name of North Herland Mine, and in the following year, it was amalgamated with other workings in the area under the name of Rosewarne and Herland United Mines. The group continued operations until 1808, and was also worked for a short period of time around 1815-1816. In 1824, Wheal Herland was restarted and worked until 1843.

The sett is reputed to have been traversed by several more or less ENE-trending lodes, called Badger, Bull's, Colenso's, Convocation, Manor Old, North Herland, Pleasure and Wheal Baily lodes, and two EW-trending lodes, called Fancy Caunter Lode and Herland Caunter Lode, which intersected all other lodes at acute angles. Herland Caunter Lode carried rich zinc ores at the intersections. North Herland Lode was the only tin-bearing lode in the sett. It was gossany in the upper part and carried chalcopyrite, cuprite, cassiterite and pyrite at depth. Manor Old Lode, south of North Herland Lode and coursing parallel to it, was a rich copper lode. It dips towards North Herland Lode and intersects with it at a depth of 85 fms.

All lodes are heaved by several NW-trending crosscourses. Some of them were filled with clay (fluccans), but others were quartz veins that carried small quantities of galena and stibnite. In 1799, silver was discovered on the 90 fm (166 m) level (120 fm below surface) in Manor Old Lode at the intersection with Convocation crosscourse, a quartz-filled vein averaging 2 feet (60 cm) in width which heaved the lode 18 inches (45 cm) south. The silver ores occurred in cracks confined to a 6-8 inches (15-20 cm) wide zone on the eastern side of the crosscourse, that extended 6 ft (1.8 m) north and 12 ft (3.6 m) south of the intersection. At depth, this zone continued to the 120 fm (221 m) level and widened to about 45 ft (13.5 m), but the ore gradually became poorer as the distance from the lode increased. It was composed of acanthite, chlorargyrite, pyrargyrite and capillary native silver, mixed with arsenopyrite, galena, native bismuth, cobaltite, and smaltite. Specimens were given to Philip Rashleigh, a leading mineral collector in the late 18th century, and Rev. William Gregor, the discoverer of titanium. A part of the ore was smelted and tested on the mine, but the principal part was sold in Bristol.

Following this discovery, other crosscourses were tried, and silver ore was also found where Manor Old Lode intersected with Rusty crosscourse, though this ore was not as rich. Occurrences of silver deposits of this type in Cornwall are not uncommon, but they are generally of a very limited extent.

The early production figures of Wheal Herland are not complete, but it is said to have sold 156 tons of silver ore before 1814. Old Herland Mine produced 677 tons of copper ore in 1794, and also sold copper ore for £7,352 in 1756. Between 1816 and 1843, Wheal Herland raised 18,500 tons of 10.75% copper ore. Production figures in conjunction with other mines are listed for Rosewarne and Herland United Mines.

Regions containing this locality

Devon and Cornwall metalliferous mining district, England, UK

Mining District - 752 mineral species & varietal names listed

Gwinear Mining District, Cornwall, England, UK

Mining District - 85 mineral species & varietal names listed

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


25 valid minerals.

Detailed Mineral List:

Acanthite
Formula: Ag2S
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 20; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 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), p. 107
Arsenopyrite
Formula: FeAsS
Reference: Henwood, W.J. (1843): Transactions of the Royal Geological Society of Cornwall 5, 1-386; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Bismite
Formula: Bi2O3
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Bismuth
Formula: Bi
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 24; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Bismuthinite
Formula: Bi2S3
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Cassiterite
Formula: SnO2
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Chalcopyrite
Formula: CuFeS2
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Chlorargyrite
Formula: AgCl
Reference: Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), pp. 108.
Cobaltite
Formula: CoAsS
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
Cuprite
Formula: Cu2O
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
'Feldspar Group'
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.
Galena
Formula: PbS
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152
Hemimorphite
Formula: Zn4Si2O7(OH)2 · H2O
Reference: Goley, P. and Williams R. (1995) Cornish Mineral Reference Manual. Endsleigh Publications
'Limonite'
Formula: (Fe,O,OH,H2O)
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Malachite
Formula: Cu2(CO3)(OH)2
Reference: Carne, J. (1822): Transactions of the Royal Geological Society of Cornwall 2, 49-128
'Manganese Oxides'
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
Olivenite
Formula: Cu2(AsO4)(OH)
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Pyrargyrite
Formula: Ag3SbS3
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Pyrite
Formula: FeS2
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 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), 158 pp.
Quartz
Formula: SiO2
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.; Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152
Quartz var: Rock Crystal
Formula: SiO2
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
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.
Silver
Formula: Ag
Reference: Carne, J. (1818): Transactions of the Royal Geological Society of Cornwall 1, 118-126; Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 20; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Silver var: Antimonial Silver
Formula: (Ag,Sb), Sb < 5%
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hogg, T. (1825): A Manual of Mineralogy. Polyblank Publishers (London), p. 20
Skutterudite
Formula: CoAs3
Reference: Phillips, W. (1823): An Elementary Introduction to the Knowledge of Mineralogy, 3rd ed. William Phillips (London), 535 pp.; Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): A Handbook to the Mineralogy of Cornwall and Devon, 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.; Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Sphalerite
Formula: ZnS
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
Stibnite
Formula: Sb2S3
Reference: Hill, J.B., MacAlister, D.A., and Flett, J.S. (1906): The geology of Falmouth and Truro and of the mining district of Camborne and Redruth. HSMO Publications (London), 335 pp.
Tenorite
Formula: CuO
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.
Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
Uraninite
Formula: UO2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
Uraninite var: Pitchblende
Formula: UO2
Reference: Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152.
'Wolframite'
Formula: (Fe2+)WO4 to (Mn2+)WO4
Reference: Hall, T.M. (1868): The Mineralogist's Directory. Edward Stanford (London), 168 pp.; Collins, J.H. (1892): "A Handbook to the Mineralogy of Cornwall and Devon", 2nd ed., D. Bradford Barton Ltd. (Truro, UK), 108 pp.

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Silver1.AA.05Ag
var: Antimonial Silver1.AA.05(Ag,Sb), Sb < 5%
Group 2 - Sulphides and Sulfosalts
'Acanthite'2.BA.35Ag2S
Arsenopyrite2.EB.20FeAsS
Bismuthinite2.DB.05Bi2S3
Chalcopyrite2.CB.10aCuFeS2
Cobaltite2.EB.25CoAsS
Galena2.CD.10PbS
Pyrargyrite2.GA.05Ag3SbS3
Pyrite2.EB.05aFeS2
Skutterudite2.EC.05CoAs3
Sphalerite2.CB.05aZnS
Stibnite2.DB.05Sb2S3
Group 3 - Halides
Chlorargyrite3.AA.15AgCl
Group 4 - Oxides and Hydroxides
Bismite4.CB.60Bi2O3
Cassiterite4.DB.05SnO2
Cuprite4.AA.10Cu2O
Quartz4.DA.05SiO2
var: Rock Crystal4.DA.05SiO2
Tenorite4.AB.10CuO
Uraninite4.DL.05UO2
var: Pitchblende4.DL.05UO2
Group 5 - Nitrates and Carbonates
Malachite5.BA.10Cu2(CO3)(OH)2
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite8.BB.30Cu2(AsO4)(OH)
Torbernite8.EB.05Cu(UO2)2(PO4)2 · 12H2O
Group 9 - Silicates
Hemimorphite9.BD.10Zn4Si2O7(OH)2 · H2O
Schorl9.CK.05Na(Fe2+3)Al6(Si6O18)(BO3)3(OH)3(OH)
Unclassified Minerals, Rocks, etc.
Feldspar Group-
Limonite-(Fe,O,OH,H2O)
Manganese Oxides-
Wolframite-(Fe2+)WO4 to (Mn2+)WO4

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Metals, other than the Platinum Group
Silver1.1.1.2Ag
Semi-metals and non-metals
Bismuth1.3.1.4Bi
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Acanthite2.4.1.1Ag2S
AmXp, with m:p = 1:1
Galena2.8.1.1PbS
Sphalerite2.8.2.1ZnS
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 2:3
Bismuthinite2.11.2.3Bi2S3
Stibnite2.11.2.1Sb2S3
AmBnXp, with (m+n):p = 1:2
Arsenopyrite2.12.4.1FeAsS
Cobaltite2.12.3.1CoAsS
Pyrite2.12.1.1FeS2
Skutterudite2.12.17.1CoAs3
Group 3 - SULFOSALTS
ø = 3
Pyrargyrite3.4.1.2Ag3SbS3
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX
Tenorite4.2.3.1CuO
A2X3
Bismite4.3.10.2Bi2O3
AX2
Cassiterite4.4.1.5SnO2
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Uraninite5.1.1.1UO2
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 40 - HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
AB2(XO4)2·xH2O, containing (UO2)2+
Torbernite40.2a.13.1Cu(UO2)2(PO4)2 · 12H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A2(XO4)Zq
Olivenite41.6.6.1Cu2(AsO4)(OH)
Group 56 - SOROSILICATES Si2O7 Groups, With Additional O, OH, F and H2O
Si2O7 Groups and O, OH, F, and H2O with cations in [4] coordination
Hemimorphite56.1.2.1Zn4Si2O7(OH)2 · H2O
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, Rocks, etc.
'Feldspar Group'-
'Limonite'-(Fe,O,OH,H2O)
'Manganese Oxides'-
Quartz
var: Rock Crystal
-SiO2
Silver
var: Antimonial Silver
-(Ag,Sb), Sb < 5%
Uraninite
var: Pitchblende
-UO2
'Wolframite'-(Fe2+)WO4 to (Mn2+)WO4

List of minerals for each chemical element

HHydrogen
H HemimorphiteZn4Si2O7(OH)2 · H2O
H Limonite(Fe,O,OH,H2O)
H MalachiteCu2(CO3)(OH)2
H OliveniteCu2(AsO4)(OH)
H SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
H TorberniteCu(UO2)2(PO4)2 · 12H2O
BBoron
B SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
C MalachiteCu2(CO3)(OH)2
OOxygen
O BismiteBi2O3
O CassiteriteSnO2
O CupriteCu2O
O HemimorphiteZn4Si2O7(OH)2 · H2O
O Limonite(Fe,O,OH,H2O)
O MalachiteCu2(CO3)(OH)2
O OliveniteCu2(AsO4)(OH)
O Uraninite (var: Pitchblende)UO2
O QuartzSiO2
O Quartz (var: Rock Crystal)SiO2
O SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
O TenoriteCuO
O TorberniteCu(UO2)2(PO4)2 · 12H2O
O UraniniteUO2
O Wolframite(Fe2+)WO4 to (Mn2+)WO4
NaSodium
Na SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Al SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Si HemimorphiteZn4Si2O7(OH)2 · H2O
Si QuartzSiO2
Si Quartz (var: Rock Crystal)SiO2
Si SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
PPhosphorus
P TorberniteCu(UO2)2(PO4)2 · 12H2O
SSulfur
S AcanthiteAg2S
S ArsenopyriteFeAsS
S BismuthiniteBi2S3
S ChalcopyriteCuFeS2
S CobaltiteCoAsS
S GalenaPbS
S PyrargyriteAg3SbS3
S PyriteFeS2
S SphaleriteZnS
S StibniteSb2S3
ClChlorine
Cl ChlorargyriteAgCl
MnManganese
Mn Wolframite(Fe2+)WO4 to (Mn2+)WO4
FeIron
Fe ArsenopyriteFeAsS
Fe ChalcopyriteCuFeS2
Fe Limonite(Fe,O,OH,H2O)
Fe PyriteFeS2
Fe SchorlNa(Fe32+)Al6(Si6O18)(BO3)3(OH)3(OH)
Fe Wolframite(Fe2+)WO4 to (Mn2+)WO4
CoCobalt
Co CobaltiteCoAsS
Co SkutteruditeCoAs3
CuCopper
Cu ChalcopyriteCuFeS2
Cu CupriteCu2O
Cu MalachiteCu2(CO3)(OH)2
Cu OliveniteCu2(AsO4)(OH)
Cu TenoriteCuO
Cu TorberniteCu(UO2)2(PO4)2 · 12H2O
ZnZinc
Zn HemimorphiteZn4Si2O7(OH)2 · H2O
Zn SphaleriteZnS
AsArsenic
As ArsenopyriteFeAsS
As CobaltiteCoAsS
As OliveniteCu2(AsO4)(OH)
As SkutteruditeCoAs3
AgSilver
Ag AcanthiteAg2S
Ag Silver (var: Antimonial Silver)(Ag,Sb), Sb < 5%
Ag ChlorargyriteAgCl
Ag PyrargyriteAg3SbS3
Ag SilverAg
SnTin
Sn CassiteriteSnO2
SbAntimony
Sb Silver (var: Antimonial Silver)(Ag,Sb), Sb < 5%
Sb PyrargyriteAg3SbS3
Sb StibniteSb2S3
WTungsten
W Wolframite(Fe2+)WO4 to (Mn2+)WO4
PbLead
Pb GalenaPbS
BiBismuth
Bi BismiteBi2O3
Bi BismuthBi
Bi BismuthiniteBi2S3
UUranium
U Uraninite (var: Pitchblende)UO2
U TorberniteCu(UO2)2(PO4)2 · 12H2O
U UraniniteUO2

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: 2033495
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: 3135052
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

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
- Carne, J. (1818): On the Discovery of Silver in the Mines of Cornwall. Transactions of the Royal Geological Society of Cornwall 1, 118-126.
- Henwood, W.J. (1843): On the Metalliferous Deposits of Cornwall and Devon. Transactions of the Royal Geological Society of Cornwall 5, 1-386.
- Dines, H.G. (1956): The metalliferous mining region of south-west England. HMSO Publications (London), Vol. 1, pp. 151-152 (see also corrigenda in the 1994 reprint).


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