Log InRegister
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreContact UsAdvertise on Mindat
Donate to MindatCorporate SponsorshipSponsor a PageSponsored PagesMindat AdvertisersAdvertise on Mindat
Learning CenterWhat is a mineral?The most common minerals on earthInformation for EducatorsMindat ArticlesThe ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Kennisham Hill Mine, Luxborough, Somerset West and Taunton, Somerset, England, UKi
Regional Level Types
Kennisham Hill MineMine
LuxboroughCivil Parish
Somerset West and TauntonDistrict
SomersetCounty
EnglandConstituent Country
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84):
51° 6' 52'' North , 3° 28' 58'' West
Latitude & Longitude (decimal):
UK National Grid Reference:
SS963361
Locality type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Wootton Courtenay264 (2018)7.7km
Carhampton687 (2018)7.9km
Dunster408 (2018)8.0km
Dulverton1,052 (2018)9.5km
Washford601 (2018)9.9km


The Mine was opened (or reopened) in 1853 by an Iron smelting company from south Wales. Initially mining Goethite/Hematite, this giving way to Siderite at a shallow depth. The discontinues east-west lode structure hosted in Devonian Slates also contains sparse Copper and rare Bismuth mineralization. The highest output of Iron Ore was in 1877 with 47,000 tons for all the Brendon Hill Iron mines. The mine closing in 1883 due to imports from Spain and the unsuitability of Siderite as an ore. There was an abortive attempt at revival in 1907.
Dumps and collapse stopes workings in forested area 500 yards north-west of picnic site and 3 miles east-south-east of Wheddon Cross, a very recent Somerset village dating from the 1820s

Regions containing this locality

Eurasian PlateTectonic Plate
EuropeContinent
British IslesGroup of Islands
Exmoor National Park, Devon, England, UKNational Park
Brendon Hills, Somerset, England, UKGroup of Hills

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals.

Detailed Mineral List:

Atelestite
Formula: Bi2(AsO4)O(OH)
Colour: Colourless-White
Description: EDS partly identified at the ROM, but might be Tetrarooseveltite.
Reference: Steve Rust Collection;
Baryte
Formula: BaSO4
Description: Very thin platy colourless micro-crystals <0.5mm
Reference: Steve Rust
Bismutite
Formula: (BiO)2CO3
Description: Bismutite from Kennisham Iron Mine is found as inconspicuous white to light yellow and yellow green masses to 2cms,and micro balls <1mm also as platy square, and tapering prismatic crystals <0.75mm. Bismutite commonly replaces a metallic grey Bismuth mineral. The matrix is a mixture of Goethite some Quartz and a very micaceous slate. Confirmed by XRD at the NHM, London 2012.
Reference: Steve Rust Collection & NHM Collection, London
Bornite
Formula: Cu5FeS4
Description: Masses to a few mm as a purple-red (horse flesh ore) tarnished alteration of Chalcopyrite
Reference: Steve Rust Collection
Brochantite
Formula: Cu4(SO4)(OH)6
Description: Found as emerald green bladed to prismatic tiny micro-crystals, associated with Chalcocite rich matrix, with Langite and Connellite.
Reference: Steve Rust Collection
Chalcocite
Formula: Cu2S
Description: Massive metallic grey masses (easily confused with a BiCu sulphide at this mine) to a few mm in dump material, as an alteration of Chalcopyrite
Reference: Steve Rust Collection
Chalcopyrite
Formula: CuFeS2
Description: Metallic yellow thin stringers in siderite with enclosing quartz, and as metallic grains in Goethite some possible altered to Chalcocite and Bornite.
Reference: Steve Rust Collection
'Chlorite Group'
Reference: Steve Rust Collection
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Description: As a greenish resinous replacement of malachite
Reference: Steve Rust Collection
Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
Description: Found on two Chalcocite rich specimen with Brochantite and Langite.
Reference: Steve Rust Collection
Cuprite
Formula: Cu2O
Description: Cuprite rarely forms crystalline masses to a few cms encrusted with green Malachite, with remnant Chalcopyrite and Chalcocite, very minor amounts of connellite are found with the Cuprite.
Reference: Steve Rust Collection;
Goethite
Formula: α-Fe3+O(OH)
Description: Common as micro-crystals and cross-fibrous masses with a low botryoidal surface, to several cms from the dump.
Reference: Steve Rust Collection
Langite
Formula: Cu4(SO4)(OH)6 · 2H2O
Description: Found on Chalcocite rich specimens as twinned and bladed micro-crystals
Reference: Steve Rust Collection
Malachite
Formula: Cu2(CO3)(OH)2
Description: Occasionally as botryoidal crusts to 1cm thick, also as radial fibrous acicular crystals to afew mm,and scattered balls to 2mm dia.
Pyrite
Formula: FeS2
Description: Veinlets to 5m wide in Siderite
Reference: Steve Rust Collection
Pyrolusite ?
Formula: Mn4+O2
Description: As black crusts, occasionally with botryoidal from covering areas to 30cms from the dump. Specimens my infact be mixtures of undefined Mn species of which Pyrolusite my be present.
Pyromorphite
Formula: Pb5(PO4)3Cl
Description: So far found as two isolated colourless prismatic crystals to 1mm. The crystals are probably Pyromorphite.
Reference: Steve Rust Collection
Quartz
Formula: SiO2
Description: A common component of the vein stuff, occasionally as epimorphs after siderite, and needle like crystals to a few mm.
Reference: Steve Rust Collection
Siderite
Formula: FeCO3
Description: Rarely found unoxidised, dose not appear to form crystals; only found as cleavages enclosed in quartz to several cms.
Reference: Steve Rust Collection
'Wad'
Description: Black to dark grey veins in the county rock, some times forming botryoidal masses and stalactitic forms. Common as thin veinlets in the micasious country rock.
Reference: Steve Rust Collection
Wittichenite
Formula: Cu3BiS3
Description: Occurs as light to dark metallic grey massive mineral in goethite-hematite gossan usually extensively altered to yellow bismutite.
Reference: Steve Rust Colletion

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Chalcocite2.BA.05Cu2S
Chalcopyrite2.CB.10aCuFeS2
Pyrite2.EB.05aFeS2
Wittichenite2.GA.20Cu3BiS3
Group 3 - Halides
Connellite3.DA.25Cu19(SO4)(OH)32Cl4 · 3H2O
Group 4 - Oxides and Hydroxides
Cuprite4.AA.10Cu2O
Goethite4.00.α-Fe3+O(OH)
Pyrolusite ?4.DB.05Mn4+O2
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Bismutite5.BE.25(BiO)2CO3
Malachite5.BA.10Cu2(CO3)(OH)2
Siderite5.AB.05FeCO3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Baryte7.AD.35BaSO4
Brochantite7.BB.25Cu4(SO4)(OH)6
Langite7.DD.10Cu4(SO4)(OH)6 · 2H2O
Group 8 - Phosphates, Arsenates and Vanadates
Atelestite8.BO.15Bi2(AsO4)O(OH)
Pyromorphite8.BN.05Pb5(PO4)3Cl
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Wad'-

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 2:1
Chalcocite2.4.7.1Cu2S
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Pyrite2.12.1.1FeS2
Group 3 - SULFOSALTS
ø = 3
Wittichenite3.4.8.1Cu3BiS3
Group 4 - SIMPLE OXIDES
A2X
Cuprite4.1.1.1Cu2O
AX2
Pyrolusite ?4.4.1.4Mn4+O2
Group 6 - HYDROXIDES AND OXIDES CONTAINING HYDROXYL
XO(OH)
Goethite6.1.1.2α-Fe3+O(OH)
Group 14 - ANHYDROUS NORMAL CARBONATES
A(XO3)
Siderite14.1.1.3FeCO3
Group 16a - ANHYDROUS CARBONATES CONTAINING HYDROXYL OR HALOGEN
Bismutite16a.3.5.1(BiO)2CO3
Malachite16a.3.1.1Cu2(CO3)(OH)2
Group 28 - ANHYDROUS ACID AND NORMAL SULFATES
AXO4
Baryte28.3.1.1BaSO4
Group 30 - ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq, where m:p>2:1
Brochantite30.1.3.1Cu4(SO4)(OH)6
Group 31 - HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
(AB)m(XO4)pZq·xH2O, where m:p > 6:1
Connellite31.1.1.1Cu19(SO4)(OH)32Cl4 · 3H2O
(AB)4(XO4)Zq·xH2O
Langite31.4.3.1Cu4(SO4)(OH)6 · 2H2O
Group 41 - ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
A5(XO4)3Zq
Pyromorphite41.8.4.1Pb5(PO4)3Cl
Miscellaneous
Atelestite41.11.5.1Bi2(AsO4)O(OH)
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-
'Wad'-

List of minerals for each chemical element

HHydrogen
H Goethiteα-Fe3+O(OH)
H MalachiteCu2(CO3)(OH)2
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
H LangiteCu4(SO4)(OH)6 · 2H2O
H BrochantiteCu4(SO4)(OH)6
H ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
H AtelestiteBi2(AsO4)O(OH)
CCarbon
C Bismutite(BiO)2CO3
C MalachiteCu2(CO3)(OH)2
C SideriteFeCO3
OOxygen
O Goethiteα-Fe3+O(OH)
O BaryteBaSO4
O Bismutite(BiO)2CO3
O MalachiteCu2(CO3)(OH)2
O QuartzSiO2
O SideriteFeCO3
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O LangiteCu4(SO4)(OH)6 · 2H2O
O BrochantiteCu4(SO4)(OH)6
O ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
O PyromorphitePb5(PO4)3Cl
O CupriteCu2O
O AtelestiteBi2(AsO4)O(OH)
O PyrolusiteMn4+O2
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si QuartzSiO2
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
PPhosphorus
P PyromorphitePb5(PO4)3Cl
SSulfur
S BaryteBaSO4
S ChalcopyriteCuFeS2
S ChalcociteCu2S
S LangiteCu4(SO4)(OH)6 · 2H2O
S BrochantiteCu4(SO4)(OH)6
S ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
S PyriteFeS2
S BorniteCu5FeS4
S WitticheniteCu3BiS3
ClChlorine
Cl ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cl PyromorphitePb5(PO4)3Cl
MnManganese
Mn PyrolusiteMn4+O2
FeIron
Fe Goethiteα-Fe3+O(OH)
Fe SideriteFeCO3
Fe ChalcopyriteCuFeS2
Fe PyriteFeS2
Fe BorniteCu5FeS4
CuCopper
Cu MalachiteCu2(CO3)(OH)2
Cu ChalcopyriteCuFeS2
Cu ChalcociteCu2S
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu LangiteCu4(SO4)(OH)6 · 2H2O
Cu BrochantiteCu4(SO4)(OH)6
Cu ConnelliteCu19(SO4)(OH)32Cl4 · 3H2O
Cu CupriteCu2O
Cu BorniteCu5FeS4
Cu WitticheniteCu3BiS3
AsArsenic
As AtelestiteBi2(AsO4)O(OH)
BaBarium
Ba BaryteBaSO4
PbLead
Pb PyromorphitePb5(PO4)3Cl
BiBismuth
Bi Bismutite(BiO)2CO3
Bi AtelestiteBi2(AsO4)O(OH)
Bi WitticheniteCu3BiS3

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Late Cretaceous
66 - 100.5 Ma



ID: 3191056
Mesozoic sedimentary rocks

Age: Late Cretaceous (66 - 100.5 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Late Devonian
358.9 - 382.7 Ma



ID: 3147015
Late Devonian claystone

Age: Late Devonian (358.9 - 382.7 Ma)

Lithology: Claystone

Reference: Asch, K. The 1:5M International Geological Map of Europe and Adjacent Areas: Development and Implementation of a GIS-enabled Concept. Geologisches Jahrbuch, SA 3. [147]

Late Devonian
358.9 - 382.7 Ma



ID: 2032630
Upper Devonian Rocks (Undifferentiated)

Age: Late Devonian (358.9 - 382.7 Ma)

Lithology: Mudstone, siltstone and sandstone

Reference: British Geological Survey. DiGMapGB-625. British Geological Survey ©NERC. [23]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Jones, M.H. (2011): The Brendon Hills Iron Mines and the West Somerset Railway. Lightmoor Press, 416 pp.


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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2020, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: April 9, 2020 12:30:26 Page generated: May 7, 2019 19:01:50
Go to top of page