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Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine), Kenidjack Valley, St Just, Cornwall, England, UKi
Regional Level Types
Boswedden Mine (incl. Wheal Praze; Wheal Williams; Yankee Boy Mine)Mine
Kenidjack ValleyValley
St JustCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 7' 52'' North , 5° 42' 0'' West
Latitude & Longitude (decimal):
50.13111,-5.70000
GeoHash:
G#: gbgvnq16u
GRN:
N34W03
UK National Grid Reference:
SW356323
Type:
Mine
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
St Just1,957 (2017)1.6km
Madron626 (2017)9.6km
Penzance19,872 (2017)11.7km
Mousehole697 (2017)12.6km
Marazion1,294 (2017)16.0km
Mindat Locality ID:
1284
Long-form identifier:
mindat:1:2:1284:6
GUID (UUID V4):
f16f44aa-9c0c-4cb9-9594-e2e496a634f9


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

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

22 valid minerals.

Detailed Mineral List:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Beryl
Formula: Be3Al2(Si6O18)
β“˜ Bornite
Formula: Cu5FeS4
Habit: Massive
β“˜ Brochantite
Formula: Cu4(SO4)(OH)6
β“˜ Calcite
Formula: CaCO3
β“˜ Cassiterite
Formula: SnO2
β“˜ Chalcocite
Formula: Cu2S
β“˜ Chalcopyrite
Formula: CuFeS2
β“˜ 'Chlorite Group'
β“˜ Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
β“˜ Copper
Formula: Cu
Habit: Microscopic grains
Description: Microscopic grains in granite adjacent to copper sulphide-bearing veinlets
β“˜ Dolomite
Formula: CaMg(CO3)2
β“˜ Fluorapatite
Formula: Ca5(PO4)3F
References:
BMS Collection
β“˜ Fluorapatite var. Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
β“˜ Goethite
Formula: Ξ±-Fe3+O(OH)
β“˜ Hematite
Formula: Fe2O3
References:
P Haas collection
β“˜ Hematite var. Specularite
Formula: Fe2O3
β“˜ 'Hornblende Root Name Group'
Formula: ◻Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜ 'K Feldspar'
β“˜ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
β“˜ Langite
Formula: Cu4(SO4)(OH)6 · 2H2O
β“˜ Lepidocrocite
Formula: γ-Fe3+O(OH)
β“˜ 'Limonite'
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
β“˜ 'Mica Group'
β“˜ Paratacamite ?
Formula: Cu3(Cu,Zn)(OH)6Cl2
Habit: Bipyramidal crystals, less than 1 mm across.
Colour: Dark green
Description: Identified by visual means only. Could also be clinoatacamite.
β“˜ Pyrite
Formula: FeS2
β“˜ Quartz
Formula: SiO2
References:
P Haas collection
β“˜ Quartz var. Amethyst
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
β“˜ Siderite
Formula: FeCO3
References:
P Haas collection
β“˜ Topaz
Formula: Al2(SiO4)(F,OH)2
β“˜ 'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z

Gallery:

SnO2β“˜ Cassiterite
Cu19(SO4)(OH)32Cl4 · 3H2Oβ“˜ Connellite
FeCO3β“˜ Siderite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
β“˜Chalcocite2.BA.05Cu2S
β“˜Bornite2.BA.15Cu5FeS4
β“˜Chalcopyrite2.CB.10aCuFeS2
β“˜Pyrite2.EB.05aFeS2
β“˜Arsenopyrite2.EB.20FeAsS
Group 3 - Halides
β“˜Paratacamite ?3.DA.10cCu3(Cu,Zn)(OH)6Cl2
β“˜Connellite3.DA.25Cu19(SO4)(OH)32Cl4 Β· 3H2O
Group 4 - Oxides and Hydroxides
β“˜Goethite4.00.Ξ±-Fe3+O(OH)
β“˜Hematite
var. Specularite		4.CB.05Fe2O3
β“˜4.CB.05Fe2O3
β“˜Quartz
var. Smoky Quartz		4.DA.05SiO2
β“˜4.DA.05SiO2
β“˜var. Amethyst4.DA.05SiO2
β“˜var. Chalcedony4.DA.05SiO2
β“˜Cassiterite4.DB.05SnO2
β“˜Lepidocrocite4.FE.15Ξ³-Fe3+O(OH)
Group 5 - Nitrates and Carbonates
β“˜Siderite5.AB.05FeCO3
β“˜Calcite5.AB.05CaCO3
β“˜Dolomite5.AB.10CaMg(CO3)2
β“˜Malachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
β“˜Brochantite7.BB.25Cu4(SO4)(OH)6
β“˜Langite7.DD.10Cu4(SO4)(OH)6 Β· 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
β“˜Fluorapatite8.BN.05Ca5(PO4)3F
β“˜var. Carbonate-rich Fluorapatite8.BN.05Ca5(PO4,CO3)3(F,O)
Group 9 - Silicates
β“˜Topaz9.AF.35Al2(SiO4)(F,OH)2
β“˜Beryl9.CJ.05Be3Al2(Si6O18)
Unclassified
β“˜'Mica Group'-
β“˜'Hornblende Root Name Group'-β—»Ca2(Z2+4Z3+)(AlSi7O22)(OH,F,Cl)2
β“˜'K Feldspar
var. Adularia'		-KAlSi3O8
β“˜'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z
β“˜'Limonite'-
β“˜'Chlorite Group'-
β“˜'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ BrochantiteCu4(SO4)(OH)6
Hβ“˜ ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Hβ“˜ GoethiteΞ±-Fe3+O(OH)
Hβ“˜ LangiteCu4(SO4)(OH)6 · 2H2O
Hβ“˜ Lepidocrociteγ-Fe3+O(OH)
Hβ“˜ MalachiteCu2(CO3)(OH)2
Hβ“˜ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Hβ“˜ TopazAl2(SiO4)(F,OH)2
Hβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
BeBeryllium
Beβ“˜ BerylBe3Al2(Si6O18)
BBoron
Bβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
Cβ“˜ CalciteCaCO3
Cβ“˜ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Cβ“˜ DolomiteCaMg(CO3)2
Cβ“˜ MalachiteCu2(CO3)(OH)2
Cβ“˜ SideriteFeCO3
OOxygen
Oβ“˜ K Feldspar var. AdulariaKAlSi3O8
Oβ“˜ Quartz var. AmethystSiO2
Oβ“˜ BrochantiteCu4(SO4)(OH)6
Oβ“˜ BerylBe3Al2(Si6O18)
Oβ“˜ CalciteCaCO3
Oβ“˜ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Oβ“˜ CassiteriteSnO2
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Oβ“˜ DolomiteCaMg(CO3)2
Oβ“˜ FluorapatiteCa5(PO4)3F
Oβ“˜ GoethiteΞ±-Fe3+O(OH)
Oβ“˜ HematiteFe2O3
Oβ“˜ LangiteCu4(SO4)(OH)6 · 2H2O
Oβ“˜ Lepidocrociteγ-Fe3+O(OH)
Oβ“˜ MalachiteCu2(CO3)(OH)2
Oβ“˜ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Oβ“˜ QuartzSiO2
Oβ“˜ SideriteFeCO3
Oβ“˜ Quartz var. Smoky QuartzSiO2
Oβ“˜ TopazAl2(SiO4)(F,OH)2
Oβ“˜ TourmalineAD3G6 (T6O18)(BO3)3X3Z
Oβ“˜ Hematite var. SpeculariteFe2O3
Oβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FFluorine
Fβ“˜ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Fβ“˜ FluorapatiteCa5(PO4)3F
Fβ“˜ TopazAl2(SiO4)(F,OH)2
Fβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
MgMagnesium
Mgβ“˜ DolomiteCaMg(CO3)2
AlAluminium
Alβ“˜ K Feldspar var. AdulariaKAlSi3O8
Alβ“˜ BerylBe3Al2(Si6O18)
Alβ“˜ TopazAl2(SiO4)(F,OH)2
Alβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
SiSilicon
Siβ“˜ K Feldspar var. AdulariaKAlSi3O8
Siβ“˜ Quartz var. AmethystSiO2
Siβ“˜ BerylBe3Al2(Si6O18)
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ QuartzSiO2
Siβ“˜ Quartz var. Smoky QuartzSiO2
Siβ“˜ TopazAl2(SiO4)(F,OH)2
Siβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
PPhosphorus
Pβ“˜ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Pβ“˜ FluorapatiteCa5(PO4)3F
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BorniteCu5FeS4
Sβ“˜ BrochantiteCu4(SO4)(OH)6
Sβ“˜ ChalcopyriteCuFeS2
Sβ“˜ ChalcociteCu2S
Sβ“˜ ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Sβ“˜ LangiteCu4(SO4)(OH)6 · 2H2O
Sβ“˜ PyriteFeS2
ClChlorine
Clβ“˜ ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Clβ“˜ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Clβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
KPotassium
Kβ“˜ K Feldspar var. AdulariaKAlSi3O8
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ Fluorapatite var. Carbonate-rich FluorapatiteCa5(PO4,CO3)3(F,O)
Caβ“˜ DolomiteCaMg(CO3)2
Caβ“˜ FluorapatiteCa5(PO4)3F
Caβ“˜ Hornblende Root Name Group◻Ca2(Z42+Z3+)(AlSi7O22)(OH,F,Cl)2
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ BorniteCu5FeS4
Feβ“˜ ChalcopyriteCuFeS2
Feβ“˜ GoethiteΞ±-Fe3+O(OH)
Feβ“˜ HematiteFe2O3
Feβ“˜ Lepidocrociteγ-Fe3+O(OH)
Feβ“˜ PyriteFeS2
Feβ“˜ SideriteFeCO3
Feβ“˜ Hematite var. SpeculariteFe2O3
CuCopper
Cuβ“˜ BorniteCu5FeS4
Cuβ“˜ BrochantiteCu4(SO4)(OH)6
Cuβ“˜ ChalcopyriteCuFeS2
Cuβ“˜ ChalcociteCu2S
Cuβ“˜ ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cuβ“˜ CopperCu
Cuβ“˜ LangiteCu4(SO4)(OH)6 · 2H2O
Cuβ“˜ MalachiteCu2(CO3)(OH)2
Cuβ“˜ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
ZnZinc
Znβ“˜ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
SnTin
Snβ“˜ CassiteriteSnO2

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
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

www.cornwallinfocus.co.uk (n.d.) http://www.cornwallinfocus.co.uk/mining/boswedden.php
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.68-69
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