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Balleswidden Mine, St Just, Cornwall, England, UKi
Regional Level Types
Balleswidden MineMine
St JustCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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Latitude & Longitude (WGS84):
50° 7' 8'' North , 5° 39' 15'' West
Latitude & Longitude (decimal):
50.11889,-5.65444
GeoHash:
G#: gbgvp7fe9
GRN:
N34W03
UK National Grid Reference:
SW388308
Type:
Mine
KΓΆppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
St Just1,957 (2017)1.9km
Madron626 (2017)6.6km
Penzance19,872 (2017)8.4km
Mousehole697 (2017)9.1km
Marazion1,294 (2017)12.8km
Mindat Locality ID:
1266
Long-form identifier:
mindat:1:2:1266:2
GUID (UUID V4):
fb0f2faa-d991-4665-af91-6c174d889cf1


One of the richest tin mines in the district.

In the 20th century, the dumps were largely removed for reprocessing.

The mine produced pseudomorphs of kaolinite after orthoclase, fine-grained quartz after orthoclase and cassiterite after orthoclase (Rowe & Le Neve Foster, 1879).

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

13 valid minerals.

Detailed Mineral List:

β“˜ Arsenopyrite
Formula: FeAsS
β“˜ Bismuth
Formula: Bi
β“˜ Bismuthinite
Formula: Bi2S3
β“˜ Calcite
Formula: CaCO3
β“˜ Cassiterite
Formula: SnO2
β“˜ 'Chlorite Group'
References:
P Haas collection
β“˜ Copper
Formula: Cu
β“˜ Fluorite
Formula: CaF2
β“˜ Hematite
Formula: Fe2O3
β“˜ Hematite var. Specularite
Formula: Fe2O3
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Gilbertite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Orthoclase
Formula: K(AlSi3O8)
β“˜ 'Pig's Egg'
β“˜ Quartz
Formula: SiO2
β“˜ Quartz var. Amethyst
Formula: SiO2
β“˜ Quartz var. Chalcedony
Formula: SiO2
β“˜ Quartz var. Rock Crystal
Formula: SiO2
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜ 'Wolframite Group'

Gallery:

SnO2β“˜ Cassiterite

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
β“˜Copper1.AA.05Cu
β“˜Bismuth1.CA.05Bi
Group 2 - Sulphides and Sulfosalts
β“˜Bismuthinite2.DB.05Bi2S3
β“˜Arsenopyrite2.EB.20FeAsS
Group 3 - Halides
β“˜Fluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
β“˜Hematite
var. Specularite		4.CB.05Fe2O3
β“˜4.CB.05Fe2O3
β“˜Quartz
var. Amethyst		4.DA.05SiO2
β“˜4.DA.05SiO2
β“˜var. Rock Crystal4.DA.05SiO2
β“˜var. Chalcedony4.DA.05SiO2
β“˜Cassiterite4.DB.05SnO2
β“˜'Wolframite Group'4.DB.30 va
Group 5 - Nitrates and Carbonates
β“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
β“˜Schorl9.CK.05NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
β“˜Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜var. Gilbertite9.EC.15KAl2(AlSi3O10)(OH)2
β“˜Kaolinite9.ED.05Al2(Si2O5)(OH)4
β“˜Orthoclase9.FA.30K(AlSi3O8)
Unclassified
β“˜'Chlorite Group'-
β“˜'Pig's Egg'-

List of minerals for each chemical element

HHydrogen
Hβ“˜ Muscovite var. GilbertiteKAl2(AlSi3O10)(OH)2
Hβ“˜ KaoliniteAl2(Si2O5)(OH)4
Hβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Hβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
BBoron
Bβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
CCarbon
Cβ“˜ CalciteCaCO3
OOxygen
Oβ“˜ Quartz var. AmethystSiO2
Oβ“˜ CalciteCaCO3
Oβ“˜ CassiteriteSnO2
Oβ“˜ Quartz var. ChalcedonySiO2
Oβ“˜ Muscovite var. GilbertiteKAl2(AlSi3O10)(OH)2
Oβ“˜ HematiteFe2O3
Oβ“˜ KaoliniteAl2(Si2O5)(OH)4
Oβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Oβ“˜ OrthoclaseK(AlSi3O8)
Oβ“˜ QuartzSiO2
Oβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Oβ“˜ Hematite var. SpeculariteFe2O3
Oβ“˜ Quartz var. Rock CrystalSiO2
FFluorine
Fβ“˜ FluoriteCaF2
NaSodium
Naβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
AlAluminium
Alβ“˜ Muscovite var. GilbertiteKAl2(AlSi3O10)(OH)2
Alβ“˜ KaoliniteAl2(Si2O5)(OH)4
Alβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Alβ“˜ OrthoclaseK(AlSi3O8)
Alβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
SiSilicon
Siβ“˜ Quartz var. AmethystSiO2
Siβ“˜ Quartz var. ChalcedonySiO2
Siβ“˜ Muscovite var. GilbertiteKAl2(AlSi3O10)(OH)2
Siβ“˜ KaoliniteAl2(Si2O5)(OH)4
Siβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Siβ“˜ OrthoclaseK(AlSi3O8)
Siβ“˜ QuartzSiO2
Siβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Siβ“˜ Quartz var. Rock CrystalSiO2
SSulfur
Sβ“˜ ArsenopyriteFeAsS
Sβ“˜ BismuthiniteBi2S3
KPotassium
Kβ“˜ Muscovite var. GilbertiteKAl2(AlSi3O10)(OH)2
Kβ“˜ MuscoviteKAl2(AlSi3O10)(OH)2
Kβ“˜ OrthoclaseK(AlSi3O8)
CaCalcium
Caβ“˜ CalciteCaCO3
Caβ“˜ FluoriteCaF2
FeIron
Feβ“˜ ArsenopyriteFeAsS
Feβ“˜ HematiteFe2O3
Feβ“˜ SchorlNaFe32+Al6(Si6O18)(BO3)3(OH)3(OH)
Feβ“˜ Hematite var. SpeculariteFe2O3
CuCopper
Cuβ“˜ CopperCu
AsArsenic
Asβ“˜ ArsenopyriteFeAsS
SnTin
Snβ“˜ CassiteriteSnO2
BiBismuth
Biβ“˜ BismuthBi
Biβ“˜ BismuthiniteBi2S3

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

Rowe, T.P. and Le Neve Foster, C. (1879) Observations on Balleswidden Mine. Transactions of the Royal Geological Society of Cornwall 10, 10-17.
Russell, Arthur (1920) On the occurrence of Phenacite and Scheelite at Wheal Cock, St. Just, Cornwall. Mineralogical Magazine and Journal of the Mineralogical Society, 19 (88) 19-22 doi:10.1180/minmag.1920.019.88.06
Dines, H. G. (1956) The Metalliferous Mining Region of South-West England (1st ed.) Vol. 1. Geological Survey of Great Britain, London.pp.100-102
www.cornwallinfocus.co.uk (n.d.) http://www.cornwallinfocus.co.uk/mining/balles.php
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