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

Select Mineral List Type

Standard Detailed Gallery Strunz 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.

References:

Steve Rust collection

ⓘ Baryte

Formula: BaSO₄

Description: Very thin platy colourless micro-crystals <0.5mm

References:

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.

References:

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

References:

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.

References:

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

References:

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.

References:

Steve Rust collection

ⓘ 'Chlorite Group'

References:

Steve Rust collection

ⓘ Chrysocolla

Formula: Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1

Description: As a greenish resinous replacement of malachite

References:

Steve Rust collection

ⓘ Connellite

Formula: Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O

Description: Found on two Chalcocite rich specimen with Brochantite and Langite.

References:

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.

References:

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.

References:

Steve Rust collection

ⓘ Langite

Formula: Cu₄(SO₄)(OH)₆ · 2H₂O

Description: Found on Chalcocite rich specimens as twinned and bladed micro-crystals

References:

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

References:

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.

References:

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.

References:

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.

References:

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.

References:

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.

References:

Steve Rust Colletion

Gallery:

(BiO)₂CO₃ⓘ Bismutite

Cu₄(SO₄)(OH)₆ⓘ Brochantite

Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂Oⓘ Connellite

Cu₂(CO₃)(OH)₂ⓘ Malachite

ⓘ 'Wad'

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘ	Chalcocite	2.BA.05	Cu₂S
ⓘ	Bornite	2.BA.15	Cu₅FeS₄
ⓘ	Chalcopyrite	2.CB.10a	CuFeS₂
ⓘ	Pyrite	2.EB.05a	FeS₂
ⓘ	Wittichenite	2.GA.20	Cu₃BiS₃
Group 3 - Halides
ⓘ	Connellite	3.DA.25	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Group 4 - Oxides and Hydroxides
ⓘ	Goethite	4.00.	α-Fe³⁺O(OH)
ⓘ	Cuprite	4.AA.10	Cu₂O
ⓘ	Quartz	4.DA.05	SiO₂
ⓘ	Pyrolusite ?	4.DB.05	Mn⁴⁺O₂
Group 5 - Nitrates and Carbonates
ⓘ	Siderite	5.AB.05	FeCO₃
ⓘ	Malachite	5.BA.10	Cu₂(CO₃)(OH)₂
ⓘ	Bismutite	5.BE.25	(BiO)₂CO₃
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘ	Baryte	7.AD.35	BaSO₄
ⓘ	Brochantite	7.BB.25	Cu₄(SO₄)(OH)₆
ⓘ	Langite	7.DD.10	Cu₄(SO₄)(OH)₆ · 2H₂O
Group 8 - Phosphates, Arsenates and Vanadates
ⓘ	Pyromorphite	8.BN.05	Pb₅(PO₄)₃Cl
ⓘ	Atelestite	8.BO.15	Bi₂(AsO₄)O(OH)
Group 9 - Silicates
ⓘ	Chrysocolla	9.ED.20	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Unclassified
ⓘ	'Chlorite Group'	-
ⓘ	'Wad'	-

List of minerals for each chemical element

H	Hydrogen
H	ⓘ Atelestite	Bi₂(AsO₄)O(OH)
H	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
H	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
H	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
H	ⓘ Goethite	α-Fe³⁺O(OH)
H	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
H	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	Carbon
C	ⓘ Bismutite	(BiO)₂CO₃
C	ⓘ Malachite	Cu₂(CO₃)(OH)₂
C	ⓘ Siderite	FeCO₃
O	Oxygen
O	ⓘ Atelestite	Bi₂(AsO₄)O(OH)
O	ⓘ Baryte	BaSO₄
O	ⓘ Bismutite	(BiO)₂CO₃
O	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
O	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
O	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
O	ⓘ Cuprite	Cu₂O
O	ⓘ Goethite	α-Fe³⁺O(OH)
O	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
O	ⓘ Malachite	Cu₂(CO₃)(OH)₂
O	ⓘ Pyrolusite	Mn⁴⁺O₂
O	ⓘ Pyromorphite	Pb₅(PO₄)₃Cl
O	ⓘ Quartz	SiO₂
O	ⓘ Siderite	FeCO₃
Al	Aluminium
Al	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	Silicon
Si	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Si	ⓘ Quartz	SiO₂
P	Phosphorus
P	ⓘ Pyromorphite	Pb₅(PO₄)₃Cl
S	Sulfur
S	ⓘ Baryte	BaSO₄
S	ⓘ Bornite	Cu₅FeS₄
S	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
S	ⓘ Chalcopyrite	CuFeS₂
S	ⓘ Chalcocite	Cu₂S
S	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
S	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
S	ⓘ Pyrite	FeS₂
S	ⓘ Wittichenite	Cu₃BiS₃
Cl	Chlorine
Cl	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Cl	ⓘ Pyromorphite	Pb₅(PO₄)₃Cl
Mn	Manganese
Mn	ⓘ Pyrolusite	Mn⁴⁺O₂
Fe	Iron
Fe	ⓘ Bornite	Cu₅FeS₄
Fe	ⓘ Chalcopyrite	CuFeS₂
Fe	ⓘ Goethite	α-Fe³⁺O(OH)
Fe	ⓘ Pyrite	FeS₂
Fe	ⓘ Siderite	FeCO₃
Cu	Copper
Cu	ⓘ Bornite	Cu₅FeS₄
Cu	ⓘ Brochantite	Cu₄(SO₄)(OH)₆
Cu	ⓘ Chalcopyrite	CuFeS₂
Cu	ⓘ Chalcocite	Cu₂S
Cu	ⓘ Chrysocolla	Cu_2-xAl_x(H_2-xSi₂O₅)(OH)₄ · nH₂O, x < 1
Cu	ⓘ Connellite	Cu₁₉(SO₄)(OH)₃₂Cl₄ · 3H₂O
Cu	ⓘ Cuprite	Cu₂O
Cu	ⓘ Langite	Cu₄(SO₄)(OH)₆ · 2H₂O
Cu	ⓘ Malachite	Cu₂(CO₃)(OH)₂
Cu	ⓘ Wittichenite	Cu₃BiS₃
As	Arsenic
As	ⓘ Atelestite	Bi₂(AsO₄)O(OH)
Ba	Barium
Ba	ⓘ Baryte	BaSO₄
Pb	Lead
Pb	ⓘ Pyromorphite	Pb₅(PO₄)₃Cl
Bi	Bismuth
Bi	ⓘ Atelestite	Bi₂(AsO₄)O(OH)
Bi	ⓘ Bismutite	(BiO)₂CO₃
Bi	ⓘ Wittichenite	Cu₃BiS₃

Other Regions, Features and Areas containing this locality

British and Irish IslesGroup of Islands

Eurasian PlateTectonic Plate

EuropeContinent

England
- Devon
  - Exmoor National ParkNational Park
- Somerset
  - Brendon HillsGroup of Hills

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

Jones, M.H. (2011): The Brendon Hills Iron Mines and the West Somerset Railway. Lightmoor Press, 416 pp.

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