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Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK

StandardDetailedBy ChemistryMineral Photos (48)Site Photos (11)Search GoogleMineral Report for Region

Following the reorganisation of 1996, the three Unitary Authorities of Rhondda Cynon Taff, Bridgend and Merthyr Tydfil and were formed from the administrative county of Mid Glamorgan.

Mid Glamorgan was itself only formed during the 1974 reorganisation and was previously part of the traditional county of Glamorgan, which dates back to the middle ages.

Mineral specimens from locations within this section may therefore be labeled as coming from Rhondda-Cynon-Taff, Mid Glamorgan or Glamorgan depending upon the time they were collected.




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


Mineral List:
  		•  Alstonite
    BaCa(CO
     
    3
    		)
     
    2
    Description: Crystals typically 1mm or less, commonly replaced by barite
    Reference: [Alabaster, C. 1990. Alstonite and barytocalcite from Llantrisant, South Wales and barytocalcite from Holwell, Mendip Hills, England. Journal of the Russell Society, 3, 1-6.]
    Site Photo
    A4119 roadcutting, Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Anglesite
    PbSO
     
    4
    Reference: []
  		•  Ankerite
    Ca(Fe
    2+
     
    		 ,Mg,Mn
    2+
     
    		)(CO
     
    3
    		)
     
    2
    Reference: []
  		•  Apatite-(CaF)
    var: Carbonate-rich Apatite-(CaF)
    Ca
     
    5
    		[(F,O)|(PO
     
    4
    		,CO
     
    3
    		)
     
    3
    		]
    Description: Carbonate-fluorapatite has recently been identified in the south Wales coalfield. It occurs within ironstones as minute water-clear crystals with a superficial resemblence to the infinitely more common siderite.
    Reference: [Journal of the Russell Society Volume 8, Part2. 2005, pp 98-101]
  		•  Aragonite
    CaCO
     
    3
    Description: Witherite usually has surface alteration to barite
    Reference: [No reference listed]
  		•  Aurichalcite
    (Zn,Cu)
     
    5
    		[(OH)
     
    3
    		|CO
     
    3
    		]
     
    2
    Reference: [BMS Database]
  		•  Azurite
    Cu
     
    3
    		[OH|CO
     
    3
    		]
     
    2
    Description: Both malachite and azurite occur rarely, the former as groups of acicular crystals in oxydised chalcopyrite, the latter as individual crystals to 2mm. Goethite occurred as plates of intergrown crystals to 10mm, in the overburden.
    Reference: [Ian Jones collection]
  		•  Baryte
    BaSO
     
    4
    Description: Witherite usually has surface alteration to barite
    Reference: [No reference listed]
    Site Photo
    Rhiwsaeson (Gwern Efa), Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © M.Wirth
  		•  Barytocalcite
    BaCa(CO
     
    3
    		)
     
    2
    Description: National Museum of Wales specimen. Identified by XRD
    Reference: [No reference listed]
  		•  Calcite
    CaCO
     
    3
    Reference: [No reference listed]
    Site Photo
    A4119 roadcutting, Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Cerussite
    PbCO
     
    3
    Reference: []
  		•  Chalcopyrite
    CuFeS
     
    2
    Description: Both malachite and azurite occur rarely, the former as groups of acicular crystals in oxydised chalcopyrite, the latter as individual crystals to 2mm. Goethite occurred as plates of intergrown crystals to 10mm, in the overburden.
    Reference: [Ian Jones collection]
  		•  Chamosite
    (Fe
    2+
     
    		,Mg)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [Chamosite confirmed by XRD at the National Museum of Wales]
    Site Photo
    Cwmneol Colliery (Morris's pit), Cwmaman, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Covellite
    CuS
    Reference: [Bowler & Kingston (1971)]
  		•  Dickite
    Al
     
    2
    		Si
     
    2
    		O
     
    5
    		(OH)
     
    4
    Reference: [No reference listed]
  		•  Dolomite
    CaMg(CO
     
    3
    		)
     
    2
    Reference: []
    Site Photo
    Gelli (Globe) Colliery, Gelli, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Fluorite
    CaF
     
    2
    Reference: []
  		•  Galena
    PbS
    Reference: []
    Site Photo
    Britannic Merthyr Colliery, Gilfach Coch, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Goethite
    α-Fe
    3+
     
    		O(OH)
    Description: Both malachite and azurite occur rarely, the former as groups of acicular crystals in oxydised chalcopyrite, the latter as individual crystals to 2mm. Goethite occurred as plates of intergrown crystals to 10mm, in the overburden.
    Reference: [Ian Jones collection]
    Site Photo
    Hendy Quarry, Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Greenockite ?
    CdS
    Reference: []
  		•  Hatchettite
    Reference: []
    Site Photo
    Hafod Pit (Colliery), Trehafod, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [BMS Database]
  		•  Hemimorphite
    Zn
     
    4
    		[(OH)
     
    2
    		|Si
     
    2
    		O
     
    7
    		] · H
     
    2
    		O
    Reference: []
  		•  Jamborite
    (Ni
    2+
     
    		,Ni
    3+
     
    		,Co,Fe)(OH)
     
    2
    		(OH,S,H
     
    2
    		O)
    Reference: [R.O. Meyer collection]
  		•  Lepidocrocite
    γ-Fe
    3+
     
    		O(OH)
    Reference: [(Rankin & Criddle, 1985]
  		•  Malachite
    Cu
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Description: Both malachite and azurite occur rarely, the former as groups of acicular crystals in oxydised chalcopyrite, the latter as individual crystals to 2mm. Goethite occurred as plates of intergrown crystals to 10mm, in the overburden.
    Reference: [Ian Jones collection]
  		•  Marcasite
    FeS
     
    2
    Reference: [No reference listed]
  		•  Millerite
    NiS
    Reference: [No reference listed]
    Site Photo
    Coed-Ely Colliery, Coed Ely, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © 2003 ROM
  		•  Palygorskite
    (Mg,Al)
     
    5
    		(Si,Al)
     
    8
    		O
     
    20
    		(OH)
     
    2
    		·8H
     
    2
    		O
    Reference: [National Museum of Wales specimen]
  		•  Pyrite
    FeS
     
    2
    Reference: []
  		•  Quartz
    SiO
     
    2
    Reference: [No reference listed]
    Site Photo
    Llwyn-saer Mine, Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Rosasite
    (Cu,Zn)
     
    2
    		[(OH)
     
    2
    		|CO
     
    3
    		]
    Reference: []
  		•  Siderite
    FeCO
     
    3
    Reference: [No reference listed]
    Site Photo
    Cwm Colliery, Beddau, Llantwit Fardre, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Lloyd Llewellyn
  		•  Siegenite
    from CoNi
     
    2
    		S
     
    4
    		 to NiCo
     
    2
    		S
     
    4
    Reference: [BMS Database]
    Site Photo
    Gelli (Globe) Colliery, Gelli, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Smithsonite
    ZnCO
     
    3
    Reference: []
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [BMS Database]
    Site Photo
    Cambrian Colliery, Clydach Vale, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones
  		•  Witherite
    BaCO
     
    3
    Description: Witherite usually has surface alteration to barite Forms aggregates of platey crystals to 40mm or more
    Reference: []
    Site Photo
    A4119 roadcutting, Llantrisant, Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan), Wales, UK
    © Ian Jones


    37 entries listed. 35 valid minerals.

    Localities in this Region:
    UK
     
    • Wales
      • Rhondda-Cynon-Taff (Mid Glamorgan; Glamorgan)
        • Abercynon
        • Clydach Vale
        • Coed Ely
        • Gelli
        • Gilfach Coch
        • Llanharan
        • Llanharry
        • Llantwit Fardre
          • Beddau
        • Trehafod
        • Tylorstown

    The above list 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!
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    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 25th Nov 2009 23:25:40