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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):
UK National Grid Reference:
SW702421
Type:
Mine (Built Over) - last checked 2019
Köppen climate type:
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):
0


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:

Arsenopyrite
Formula: FeAsS
Bismuth
Formula: Bi
Cassiterite
Formula: SnO2
'Chlorite Group'
Clinoclase
Formula: Cu3(AsO4)(OH)3
Erythrite
Formula: Co3(AsO4)2 · 8H2O
Fluorite
Formula: CaF2
Fluorite var. Chlorophane
Formula: CaF2
Galena
Formula: PbS
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.
Löllingite
Formula: FeAs2
Nickeline
Formula: NiAs
Olivenite
Formula: Cu2(AsO4)(OH)
Pharmacosiderite
Formula: KFe3+4(AsO4)3(OH)4 · 6-7H2O
'Psilomelane'
Quartz
Formula: SiO2
Quartz var. Amethyst
Formula: SiO2
Quartz var. Chalcedony
Formula: SiO2
Scorodite
Formula: Fe3+AsO4 · 2H2O
'Silica'
'Silica var. Float-stone'
Skutterudite
Formula: CoAs3
'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
References:
Dale Foster CollectionIdentified by Dale Foster: Visual Identification
Uraninite
Formula: UO2
Uraninite var. Pitchblende
Formula: UO2
'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.
'Wolframite Group'
Zippeite
Formula: K3(UO2)4(SO4)2O3(OH) · 3H2O

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
Nickeline2.CC.05NiAs
Galena2.CD.10PbS
Löllingite2.EB.15aFeAs2
Arsenopyrite2.EB.20FeAsS
Skutterudite2.EC.05CoAs3
Group 3 - Halides
Fluorite
var. Chlorophane
3.AB.25CaF2
3.AB.25CaF2
Group 4 - Oxides and Hydroxides
Quartz
var. Amethyst
4.DA.05SiO2
var. Chalcedony4.DA.05SiO2
4.DA.05SiO2
Cassiterite4.DB.05SnO2
'Wolframite Group'4.DB.30 va
Uraninite
var. Pitchblende
4.DL.05UO2
4.DL.05UO2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Zippeite7.EC.05K3(UO2)4(SO4)2O3(OH) · 3H2O
Group 8 - Phosphates, Arsenates and Vanadates
Olivenite8.BB.30Cu2(AsO4)(OH)
Clinoclase8.BE.20Cu3(AsO4)(OH)3
Scorodite8.CD.10Fe3+AsO4 · 2H2O
Erythrite8.CE.40Co3(AsO4)2 · 8H2O
Liroconite8.DF.20Cu2Al(AsO4)(OH)4 · 4H2O
Pharmacosiderite8.DK.10KFe3+4(AsO4)3(OH)4 · 6-7H2O
Unclassified
'Chlorite Group'-
'Psilomelane'-
'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
'Wad' ?-
'Silica'-
'var. Float-stone'-

List of minerals for each chemical element

HHydrogen
H ClinoclaseCu3(AsO4)(OH)3
H ErythriteCo3(AsO4)2 · 8H2O
H LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
H OliveniteCu2(AsO4)(OH)
H PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
H ScoroditeFe3+AsO4 · 2H2O
H ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
BBoron
B TourmalineAD3G6 (T6O18)(BO3)3X3Z
OOxygen
O Quartz var. AmethystSiO2
O CassiteriteSnO2
O Quartz var. ChalcedonySiO2
O ClinoclaseCu3(AsO4)(OH)3
O ErythriteCo3(AsO4)2 · 8H2O
O LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
O OliveniteCu2(AsO4)(OH)
O PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
O Uraninite var. PitchblendeUO2
O QuartzSiO2
O ScoroditeFe3+AsO4 · 2H2O
O TourmalineAD3G6 (T6O18)(BO3)3X3Z
O UraniniteUO2
O ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
FFluorine
F Fluorite var. ChlorophaneCaF2
F FluoriteCaF2
AlAluminium
Al LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
SiSilicon
Si Quartz var. AmethystSiO2
Si Quartz var. ChalcedonySiO2
Si QuartzSiO2
SSulfur
S ArsenopyriteFeAsS
S GalenaPbS
S ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
KPotassium
K PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
K ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O
CaCalcium
Ca Fluorite var. ChlorophaneCaF2
Ca FluoriteCaF2
FeIron
Fe ArsenopyriteFeAsS
Fe LöllingiteFeAs2
Fe PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
Fe ScoroditeFe3+AsO4 · 2H2O
CoCobalt
Co ErythriteCo3(AsO4)2 · 8H2O
Co SkutteruditeCoAs3
NiNickel
Ni NickelineNiAs
CuCopper
Cu ClinoclaseCu3(AsO4)(OH)3
Cu LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
Cu OliveniteCu2(AsO4)(OH)
AsArsenic
As ArsenopyriteFeAsS
As ClinoclaseCu3(AsO4)(OH)3
As ErythriteCo3(AsO4)2 · 8H2O
As LiroconiteCu2Al(AsO4)(OH)4 · 4H2O
As LöllingiteFeAs2
As NickelineNiAs
As OliveniteCu2(AsO4)(OH)
As PharmacosideriteKFe43+(AsO4)3(OH)4 · 6-7H2O
As ScoroditeFe3+AsO4 · 2H2O
As SkutteruditeCoAs3
SnTin
Sn CassiteriteSnO2
PbLead
Pb GalenaPbS
BiBismuth
Bi BismuthBi
UUranium
U Uraninite var. PitchblendeUO2
U UraniniteUO2
U ZippeiteK3(UO2)4(SO4)2O3(OH) · 3H2O

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 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

 
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