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Treburland Manganese Mine (Treburland manganese deposits), Altarnun, Cornwall, England, UKi
Regional Level Types
Treburland Manganese Mine (Treburland manganese deposits)Group of Deposits (Abandoned)
AltarnunCivil Parish
CornwallCounty
EnglandConstituent Country
UKCountry

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PhotosMapsSearch
03426670017271996278063.jpg
Rhodonite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
05819480017271996298112.jpg
Tephroite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
04946440017271996312707.jpg
Rhodonite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
03426670017271996278063.jpg
Rhodonite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
05819480017271996298112.jpg
Tephroite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
04946440017271996312707.jpg
Rhodonite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
05440790017271996414711.jpg
Rhodonite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
05819480017271996298112.jpg
Tephroite, etc.

Treburland Manganese Mine, Altarnun, Cornwall, England, UK
Latitude & Longitude (WGS84):
50° 35' 18'' North , 4° 29' 26'' West
Latitude & Longitude (decimal):
50.58855,-4.49067
GRN:
N34W03
UK National Grid Reference:
SX218814
Type:
Group of Deposits (Abandoned) - last checked 2020
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Launceston8,910 (2017)10.7km
Pensilva1,663 (2017)10.9km
Camelford2,335 (2017)13.8km
Dobwalls1,418 (2017)14.7km
Liskeard9,237 (2017)15.0km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
British Micromount Society, Devon and Cornwall Branch MeetingsLiskeard, Cornwall15km
Mindat Locality ID:
843
Long-form identifier:
mindat:1:2:843:0
GUID (UUID V4):
0


A minor producer of manganese.

Indicated to lie a short distance to the east of the Treburland Mine, which was worked for tin and wolfram.

The manganese ore is noted to occur as irregular, possibly bedded lenticular masses lying between 5 and 10 metres below ground surface in metamorphosed slates, calc-flints and siliceous beds with intrusions of metabasic rock.

The only recorded output is for 470 tons of ore between the years 1887 and 1890.

Note on the mineral list: Genthelvite has been removed from the list due to the high probability of fraudulent recording of discovery by A.W.G. Kingsbury.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


29 valid minerals. 1 erroneous literature entry.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Amphibole Supergroup'
Formula: AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ 'Apophyllite Group'
Formula: AB4[Si8O22]X · 8H2O
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ 'Axinite Group'
ⓘ Bementite
Formula: Mn7Si6O15(OH)8
ⓘ Birnessite
Formula: (Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
ⓘ Bustamite
Formula: CaMn2+(Si2O6)
ⓘ Calcite
Formula: CaCO3
ⓘ Calcite var. Manganese-bearing Calcite
Formula: (Ca,Mn)CO3
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Fluorite
Formula: CaF2
ⓘ Galena
Formula: PbS
ⓘ Genthelvite
Formula: Be3Zn4(SiO4)3S
ⓘ Hedenbergite
Formula: CaFe2+Si2O6
ⓘ 'Lepidolite'
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Marcasite
Formula: FeS2
ⓘ Molybdenite
Formula: MoS2
ⓘ Pyrite
Formula: FeS2
ⓘ Pyrolusite
Formula: Mn4+O2
ⓘ Pyrosmalite-(Fe)
Formula: Fe2+8Si6O15(OH,Cl)10
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Rhodochrosite
Formula: MnCO3
ⓘ Rhodonite
Formula: CaMn3Mn[Si5O15]
ⓘ Scheelite
Formula: Ca(WO4)
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Sphalerite
Formula: ZnS
ⓘ Tephroite
Formula: Mn2+2SiO4
ⓘ Vesuvianite
Formula: Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘ Wollastonite
Formula: Ca3(Si3O9)

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘGalena2.CD.10PbS
ⓘMolybdenite2.EA.30MoS2
ⓘPyrite2.EB.05aFeS2
ⓘMarcasite2.EB.10aFeS2
ⓘArsenopyrite2.EB.20FeAsS
Group 3 - Halides
ⓘFluorite3.AB.25CaF2
Group 4 - Oxides and Hydroxides
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
ⓘBirnessite4.FL.45(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘvar. Manganese-bearing Calcite5.AB.05(Ca,Mn)CO3
ⓘRhodochrosite5.AB.05MnCO3
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘScheelite7.GA.05Ca(WO4)
Group 9 - Silicates
ⓘTephroite9.AC.05Mn2+2SiO4
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘVesuvianite9.BG.35Ca19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
ⓘDiopside9.DA.15CaMgSi2O6
ⓘHedenbergite9.DA.15CaFe2+Si2O6
ⓘBustamite9.DG.05CaMn2+(Si2O6)
ⓘWollastonite9.DG.05Ca3(Si3O9)
ⓘRhodonite9.DK.05CaMn3Mn[Si5O15]
ⓘBementite9.EE.05Mn7Si6O15(OH)8
ⓘPyrosmalite-(Fe)9.EE.10Fe2+8Si6O15(OH,Cl)10
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘGenthelvite ?9.FB.10Be3Zn4(SiO4)3S
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
ⓘ'Apophyllite Group'-AB4[Si8O22]X · 8H2O
ⓘ'Chlorite Group'-
ⓘ'Lepidolite'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Axinite Group'-

List of minerals for each chemical element

HHydrogen
Hⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Hⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Hⓘ BementiteMn7Si6O15(OH)8
Hⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Hⓘ Pyrosmalite-(Fe)Fe82+Si6O15(OH,Cl)10
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
BeBeryllium
Beⓘ GenthelviteBe3Zn4(SiO4)3S
CCarbon
Cⓘ CalciteCaCO3
Cⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ RhodochrositeMnCO3
OOxygen
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Oⓘ BementiteMn7Si6O15(OH)8
Oⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Oⓘ BustamiteCaMn2+(Si2O6)
Oⓘ CalciteCaCO3
Oⓘ DiopsideCaMgSi2O6
Oⓘ Pyrosmalite-(Fe)Fe82+Si6O15(OH,Cl)10
Oⓘ GenthelviteBe3Zn4(SiO4)3S
Oⓘ HedenbergiteCaFe2+Si2O6
Oⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ RhodochrositeMnCO3
Oⓘ RhodoniteCaMn3Mn[Si5O15]
Oⓘ ScheeliteCa(WO4)
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ TephroiteMn22+SiO4
Oⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Oⓘ WollastoniteCa3(Si3O9)
Oⓘ Pyroxene GroupADSi2O6
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Fⓘ FluoriteCaF2
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
MgMagnesium
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
SiSilicon
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ Apophyllite GroupAB4[Si8O22]X · 8H2O
Siⓘ BementiteMn7Si6O15(OH)8
Siⓘ BustamiteCaMn2+(Si2O6)
Siⓘ DiopsideCaMgSi2O6
Siⓘ Pyrosmalite-(Fe)Fe82+Si6O15(OH,Cl)10
Siⓘ GenthelviteBe3Zn4(SiO4)3S
Siⓘ HedenbergiteCaFe2+Si2O6
Siⓘ QuartzSiO2
Siⓘ RhodoniteCaMn3Mn[Si5O15]
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ TephroiteMn22+SiO4
Siⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Siⓘ WollastoniteCa3(Si3O9)
Siⓘ Pyroxene GroupADSi2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ ChalcopyriteCuFeS2
Sⓘ GalenaPbS
Sⓘ GenthelviteBe3Zn4(SiO4)3S
Sⓘ MarcasiteFeS2
Sⓘ MolybdeniteMoS2
Sⓘ PyriteFeS2
Sⓘ PyrrhotiteFe1-xS
Sⓘ SphaleriteZnS
ClChlorine
Clⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
Clⓘ Pyrosmalite-(Fe)Fe82+Si6O15(OH,Cl)10
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Caⓘ BustamiteCaMn2+(Si2O6)
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ FluoriteCaF2
Caⓘ HedenbergiteCaFe2+Si2O6
Caⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Caⓘ RhodoniteCaMn3Mn[Si5O15]
Caⓘ ScheeliteCa(WO4)
Caⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
Caⓘ WollastoniteCa3(Si3O9)
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
TiTitanium
Tiⓘ Amphibole SupergroupAB2C5((Si,Al,Ti)8O22)(OH,F,Cl,O)2
MnManganese
Mnⓘ BementiteMn7Si6O15(OH)8
Mnⓘ Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O
Mnⓘ BustamiteCaMn2+(Si2O6)
Mnⓘ Calcite var. Manganese-bearing Calcite(Ca,Mn)CO3
Mnⓘ PyrolusiteMn4+O2
Mnⓘ RhodochrositeMnCO3
Mnⓘ RhodoniteCaMn3Mn[Si5O15]
Mnⓘ SpessartineMn32+Al2(SiO4)3
Mnⓘ TephroiteMn22+SiO4
FeIron
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ Pyrosmalite-(Fe)Fe82+Si6O15(OH,Cl)10
Feⓘ HedenbergiteCaFe2+Si2O6
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ MarcasiteFeS2
Feⓘ PyriteFeS2
Feⓘ PyrrhotiteFe1-xS
Feⓘ VesuvianiteCa19Fe3+Al4(Al6Mg2)(◻4)◻[Si2O7]4[(SiO4)10]O(OH)9
CuCopper
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ MalachiteCu2(CO3)(OH)2
ZnZinc
Znⓘ GenthelviteBe3Zn4(SiO4)3S
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
MoMolybdenum
Moⓘ MolybdeniteMoS2
WTungsten
Wⓘ ScheeliteCa(WO4)
PbLead
Pbⓘ GalenaPbS

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

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

Russell, Arthur (1946) On rhodonite and tephroite from Treburland manganese mine, Altarnun, Cornwall; and on rhodonite from other localities in Cornwall and Devonshire. Mineralogical Magazine and Journal of the Mineralogical Society, 27 (194) 221-235 doi:10.1180/minmag.1946.027.194.02
Tilley, C. E. (1946) Bustamite from Treburland manganese mine, Cornwall, and its paragenesis. Mineralogical Magazine and Journal of the Mineralogical Society, 27 (194). 236-241 doi:10.1180/minmag.1946.027.194.03
Young, Brian (1988) Birnessite from Treburland Mine, Altarnun, Cornwall. Mineralogical Magazine, 52 (366) 415-416 doi:10.1180/minmag.1988.052.366.19
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