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Pednandrea Mine (Pedn-an-Drea Mine), Redruth, Cornwall, England, UKi
Regional Level Types
Pednandrea Mine (Pedn-an-Drea Mine)Mine (Built Over)
RedruthCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 14' 0'' North , 5° 13' 21'' West
Latitude & Longitude (decimal):
50.23333,-5.22250
GeoHash:
G#: gbumc0tn6
GRN:
N34W03
UK National Grid Reference:
SW702421
Type:
Mine (Built Over) - last checked 2019
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Redruth42,690 (2017)0.1km
North Country773 (2017)2.1km
St. Day700 (2011)2.7km
Four Lanes1,416 (2017)3.7km
Chacewater1,226 (2017)5.3km
Mindat Locality ID:
1141
Long-form identifier:
mindat:1:2:1141:2
GUID (UUID V4):
92339677-ee33-40d1-a2fb-e1c767b200fb


This mine was already active in the early 18th century, and was operated intermittently until 1891. It worked a number of ENE-trending lodes in metamorphosed killas overlying the west flank of the Carn Marth granite. The workings are located under Redruth town; the shafts are built over and most of the many small mines that were included in its sett cannot be identified today. Coordinates given are those of the stepped chimney near Engine and Sump shafts, which was erected around 1824.

The lodes are intersected by two NW-trending cross-courses, about 100 fms apart. The western cross-course, which is said to carry cobalt ores, has been traced southwards to Wheal Sparnon. The eastern cross-course (or, Braggs cross-course) presumably carries uranium ores.

During its last working period, from 1854 to 1891, the mine produced 1,090 tons of 5.5% copper ore, 7,700 tons of black tin, and, together with Wheal Sparnon, 974 tons of arsenic. It was by far the largest tin producer in the area.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

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

17 valid minerals.

Detailed Mineral List:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Bismuth
Formula: Bi
β“˜ Cassiterite
Formula: SnO2
β“˜ 'Chlorite Group'
β“˜ Clinoclase
Formula: Cu3(AsO4)(OH)3
β“˜ Erythrite
Formula: Co3(AsO4)2 · 8H2O
β“˜ Fluorite
Formula: CaF2
β“˜ Fluorite var. Chlorophane
Formula: CaF2
β“˜ Galena
Formula: PbS
β“˜ Liroconite
Formula: Cu2Al(AsO4)(OH)4 · 4H2O
Description: A specimen in the Russell collection NHM London is recorded from this mine. The Liroconite has formed on Chalcedony.
β“˜ LΓΆllingite
Formula: FeAs2
β“˜ Nickeline
Formula: NiAs
β“˜ Olivenite
Formula: Cu2(AsO4)(OH)
β“˜ Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
β“˜ 'Psilomelane'
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Amethyst
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Scorodite
Formula: Fe3+AsO4 · 2H2O
β“˜ 'Silica'
β“˜ 'Silica var. Float-stone'
β“˜ Skutterudite
Formula: CoAs3
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
References:
Dale Foster CollectionIdentified by Dale Foster: Visual Identification
β“˜ Uraninite
Formula: UO2
β“˜ Uraninite var. Pitchblende
Formula: UO2
β“˜ 'Wad' ?
Description: Earthy brown manganese oxide has been recorded as occurring here by Phillips (1823), Hall (1868) and others, but Collins (1892) lists this with a question mark.
β“˜ 'Wolframite Group'
β“˜ Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
β“˜Nickeline2.CC.05NiAs
β“˜Galena2.CD.10PbS
β“˜LΓΆllingite2.EB.15aFeAs2
β“˜Arsenopyrite2.EB.20FeAsS
β“˜Skutterudite2.EC.05CoAs3
Group 3 - Halides
β“˜Fluorite
var. Chlorophane		3.AB.25CaF2
β“˜3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Quartz
var. Amethyst		4.DA.05SiO2
β“˜var. Chalcedony4.DA.05SiO2
β“˜4.DA.05SiO2
β“˜Cassiterite4.DB.05SnO2
β“˜'Wolframite Group'4.DB.30 va
β“˜Uraninite
var. Pitchblende		4.DL.05UO2
β“˜4.DL.05UO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Zippeite7.EC.05K3(UO2)4(SO4)2O3(OH) Β· 3H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Olivenite8.BB.30Cu2(AsO4)(OH)
β“˜Clinoclase8.BE.20Cu3(AsO4)(OH)3
β“˜Scorodite8.CD.10Fe3+AsO4 Β· 2H2O
β“˜Erythrite8.CE.40Co3(AsO4)2 Β· 8H2O
β“˜Liroconite8.DF.20Cu2Al(AsO4)(OH)4 Β· 4H2O
β“˜Pharmacosiderite8.DK.10KFe3+4(AsO4)3(OH)4 Β· 6-7H2O
Unclassified
β“˜'Psilomelane'-
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
β“˜'Wad' ?-
β“˜'Silica'-
β“˜'Chlorite Group'-
β“˜'Silica
var. Float-stone'		-

List of minerals for each chemical element

HHydrogen
Hβ“˜ ClinoclaseCu3(AsO4)(OH)3
Hβ“˜ ErythriteCo3(AsO4)2 · 8H2O
Hβ“˜ LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
Hβ“˜ OliveniteCu2(AsO4)(OH)
Hβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Hβ“˜ ScoroditeFe3+AsO4 · 2H2O
Hβ“˜ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
BBoron
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
OOxygen
Oβ“˜ Quartz var. AmethystSiO2
Oβ“˜ CassiteriteSnO2
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ ClinoclaseCu3(AsO4)(OH)3
Oβ“˜ ErythriteCo3(AsO4)2 · 8H2O
Oβ“˜ LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
Oβ“˜ OliveniteCu2(AsO4)(OH)
Oβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Oβ“˜ Uraninite var. PitchblendeUO2
Oβ“˜ QuartzSiO2
Oβ“˜ ScoroditeFe3+AsO4 · 2H2O
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ UraniniteUO2
Oβ“˜ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
FFluorine
Fβ“˜ Fluorite var. ChlorophaneCaF2
Fβ“˜ FluoriteCaF2
AlAluminium
Alβ“˜ LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
SiSilicon
Siβ“˜ Quartz var. AmethystSiO2
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ QuartzSiO2
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ GalenaPbS
Sβ“˜ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
KPotassium
Kβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Kβ“˜ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
CaCalcium
Caβ“˜ Fluorite var. ChlorophaneCaF2
Caβ“˜ FluoriteCaF2
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ LΓΆllingiteFeAs2
Feβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Feβ“˜ ScoroditeFe3+AsO4 · 2H2O
CoCobalt
Coβ“˜ ErythriteCo3(AsO4)2 · 8H2O
Coβ“˜ SkutteruditeCoAs3
NiNickel
Niβ“˜ NickelineNiAs
CuCopper
Cuβ“˜ ClinoclaseCu3(AsO4)(OH)3
Cuβ“˜ LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
Cuβ“˜ OliveniteCu2(AsO4)(OH)
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
Asβ“˜ ClinoclaseCu3(AsO4)(OH)3
Asβ“˜ ErythriteCo3(AsO4)2 · 8H2O
Asβ“˜ LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
Asβ“˜ LΓΆllingiteFeAs2
Asβ“˜ NickelineNiAs
Asβ“˜ OliveniteCu2(AsO4)(OH)
Asβ“˜ PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Asβ“˜ ScoroditeFe3+AsO4 · 2H2O
Asβ“˜ SkutteruditeCoAs3
SnTin
Snβ“˜ CassiteriteSnO2
PbLead
Pbβ“˜ GalenaPbS
BiBismuth
Biβ“˜ BismuthBi
UUranium
Uβ“˜ Uraninite var. PitchblendeUO2
Uβ“˜ UraniniteUO2
Uβ“˜ ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O

Geochronology

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Paleozoic
  Permian
   Guadalupian
β“˜ Major polymetallic mineralization~270 MaCornwall, England, UK
   Cisuralian
β“˜ Porphyry dikes intruded (latest age)~275 MaCornwall, England, UK
β“˜ Greisenization (latest age)~280 MaCornwall, England, UK
β“˜ Porphyry dikes intruded (earliest age)~280 MaCornwall, England, UK
β“˜ Formation of metallized pegmatites~285 MaCornwall, England, UK
β“˜ Greisenization (earliest age)~285 MaCornwall, England, UK
β“˜ Emplacement of major plutons~295 MaCornwall, England, UK

Localities in this Region

UK

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands
Eurasian PlateTectonic Plate
EuropeContinent
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.

References

Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.367-369
Embrey, Peter G., Symes, Robert F. (1987) Minerals of Cornwall and Devon. British Museum (Natural History) and the Mineralogical Record, Inc., London and Tucson, AZ.
www.cornwallinfocus.co.uk (n.d.) http://www.cornwallinfocus.co.uk/history/pednandrea.php
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