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Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK

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The mine developed a ore shoot in the Camdwr fault system. The vein is recorded as being up to 36 mts wide in the Taylors adit. Lletty Evenhen mine first recorded working was by Matthew Frances in the 1840s. And continued to be worked on and off until about 1857.Production figures are not known for this period. Under the name Vaughan, it was developed by John Taylor & Sons (the great 19th centry mining company). In this working a long adit was driven from near the Llechwedd Helyg mine site. And after 9 years it was holed through to 67 fathoms below surface. But the orebodies were found to have pinched out. Taylor worked the mine from 1868 to 1881 producing 581 tons of lead ore, and 282 tons of zinc ore. There is a recored of a few tons of manganese ore being found whiel driving the Taylor adit. Some work was done in 1910-11 with a small output.





 UK OS Grid Reference: SN694849
Map Reference: 52°26'45"N , 3°55'18"W

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Mineral List:
  		•  Anglesite
    PbSO
     
    4
    Description: Colourless xls to 0.6mm, associated with cerussite, brochantite, linarite.
    Reference: [S. Rust collection]
  		•  Aurichalcite
    (Zn,Cu)
     
    5
    		[(OH)
     
    3
    		|CO
     
    3
    		]
     
    2
    Description: Pale green lath-like xl druses to 1cm, associated with hemimorphite, and malachite.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Description: Xl masses to 2mm, in small quartz cavitys.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Bindheimite
    Pb
     
    2
    		Sb
     
    2
    		O
     
    6
    		(O,OH)
    Description: Pale creamy resinous replacements of tetrahedrite, to several cms.
    Reference: [No reference listed]
  		•  Brochantite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		]
    Description: Emerald green xls to 0.5mm, and small crusts to a few mm's. Associated with langite, anglesite, linarite.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Cerussite
    PbCO
     
    3
    Habit: various
    Colour: Colourless-creamy
    Description: Colourless to white, and creamy xls to 3mm.
    Reference: [S Rust Collection]
  		•  Chalcocite
    Cu
     
    2
    		S
    Reference: [No reference listed]
  		•  Chalcopyrite
    CuFeS
     
    2
    Description: Small xls to 4mm in quartz cavitys,
    Reference: [No reference listed]
  		•  Chrysocolla
    (Cu,Al)
     
    2
    		H
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    		·nH
     
    2
    		O
    Description: Pale blue to green thin crusts to afew mm, and replacements of malachite, cuprite.
    Reference: [S. Rust collection]
  		•  Connellite
    Cu
     
    19
    		[(OH)
     
    32
    		|SO
     
    4
    		|Cl
     
    4
    		] · 3H
     
    2
    		O
    Habit: Balls
    Colour: Deep Blue
    Description: Deep blue radial balls to 0.5mm, & masses to 4mm, associated with langite.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Cuprite
    Cu
     
    2
    		O
    Description: Xls to 0.3mm and on slicken-slide, associated with chrysocolla.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Galena
    PbS
    Habit: Massive
    Reference: [No reference listed]
  		•  Hemimorphite
    Zn
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Habit: Drusey crusts
    Colour: White-tinted blue
    Description: Colourless to tinted blue xls to 2mm; botryoidal crusts to several cms. Associated with aurichalcite, chrysocolla, malachite.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Langite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		] · 2H
     
    2
    		O
    Description: Deep to light blue green xls to 0.5mm, associated with most other supergene species.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Linarite
    PbCu[(OH)
     
    2
    		|SO
     
    4
    		]
    Description: Deep blue xls to 1mm, associated with brochantite, langite, anglesite.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Description: Green rounded masses to 1cm.
    Reference: [S. Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Mimetite
    Pb
     
    5
    		[Cl|(AsO
     
    4
    		)
     
    3
    		]
    Description: Tiny colourless prismatic xls.
    Reference: [S. Rust collection]
  		•  Posnjakite
    Cu
     
    4
    		[(OH)
     
    6
    		|SO
     
    4
    		] · H
     
    2
    		O
    Reference: []
  		•  Pyrite
    FeS
     
    2
    Reference: []
  		•  Quartz
    SiO
     
    2
    Description: Major vein mineral.
    Reference: [No reference listed]
  		•  Redgillite
    Cu
     
    6
    		[(OH)
     
    10
    		|SO
     
    4
    		] · H
     
    2
    		O
    Habit: Drusey lath-like
    Colour: Light green, green
    Reference: [S Rust collection]
    Site Photo
    Lletty Evanhen Mine (Vaughan Mine), Bontgoch, Trefeirig, Ceredigion (Dyfed; Cardiganshire), Wales, UK
    © Steve Rust
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [No reference listed]
  		•  Susannite
    Pb
     
    4
    		SO
     
    4
    		(CO
     
    3
    		)
     
    2
    		(OH)
     
    2
    Description: Colourless to white zoned psuedohexagonal xls to 0.5mm, associated with cerussite.
    Reference: [S. Rust collection]
  		•  Tetrahedrite
    (Cu,Fe,Ag,Zn)
     
    12
    		Sb
     
    4
    		S
     
    13
    Description: Masses to several cms
    Reference: [S. Rust collection]


    24 entries listed. 24 valid minerals.

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