Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
Log InRegister
Quick Links : The Mindat ManualThe Rock H. Currier Digital LibraryMindat Newsletter [Free Download]
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 ElementsThe Rock H. Currier Digital LibraryGeologic TimeExplore Fossils
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced 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 MuseumsClubs & OrganizationsMineral Shows & EventsThe Mindat DirectoryDevice SettingsThe Mineral QuizTime Machine
Photo SearchPhoto GalleriesSearch by ColorPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UKi
Regional Level Types
A4119 roadcuttingRoad Cutting
Llantrisant- not defined -
Rhondda Cynon TafCounty Borough
WalesCountry
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
07921650017272016819010.jpg
Alstonite

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
09762040017272016831884.jpg
Baryte, etc.

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
04598160017272016861471.jpg
Alstonite

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
07921650017272016819010.jpg
Alstonite

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
09762040017272016831884.jpg
Baryte, etc.

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
04598160017272016861471.jpg
Alstonite

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
05703950017272016989707.jpg
Alstonite

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
09762040017272016831884.jpg
Baryte, etc.

A4119 roadcutting, Llantrisant, Rhondda Cynon Taf, Wales, UK
Latitude & Longitude (WGS84):
51° 31' 42'' North , 3° 22' 5'' West
Latitude & Longitude (decimal):
51.52845,-3.36820
GRN:
N35W02
UK National Grid Reference:
ST051820
Type:
Road Cutting
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Llantrisant14,422 (2017)1.4km
Pontyclun5,794 (2012)1.8km
Beddau8,134 (2011)2.9km
Llantwit Fardre3,992 (2011)3.8km
Llanharry3,035 (2017)4.7km
Mindat Locality ID:
4291
Long-form identifier:
mindat:1:2:4291:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
Mid Glamorgan; Glamorgan


Minerals found in rock exposed due to road widening, most recently in 1989-90 when a second carriageway was constructed.

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


8 valid minerals.

Detailed Mineral List:

ⓘ Alstonite
Formula: BaCa(CO3)2
Description: Crystals typically 1mm or less, commonly replaced by barite
ⓘ Aragonite
Formula: CaCO3
Description: Witherite usually has surface alteration to barite
ⓘ Baryte
Formula: BaSO4
Description: Witherite usually has surface alteration to barite
ⓘ Calcite
Formula: CaCO3
Description: Witherite usually has surface alteration to barite
ⓘ Covellite
Formula: CuS
ⓘ Goethite
Formula: Fe3+O(OH)
Description: Witherite usually has surface alteration to barite
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
Description: minor malachite coats goethite replacing altered chalcopyrite
✪ Witherite
Formula: BaCO3
Description: Witherite usually has surface alteration to barite Forms aggregates of platey crystals to 40mm or more

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘCovellite2.CA.05aCuS
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAragonite5.AB.15CaCO3
ⓘWitherite5.AB.15BaCO3
ⓘAlstonite5.AB.35BaCa(CO3)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4

List of minerals for each chemical element

HHydrogen
Hⓘ GoethiteFe3+O(OH)
Hⓘ MalachiteCu2(CO3)(OH)2
CCarbon
Cⓘ AlstoniteBaCa(CO3)2
Cⓘ AragoniteCaCO3
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
Cⓘ WitheriteBaCO3
OOxygen
Oⓘ AlstoniteBaCa(CO3)2
Oⓘ AragoniteCaCO3
Oⓘ BaryteBaSO4
Oⓘ CalciteCaCO3
Oⓘ GoethiteFe3+O(OH)
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ WitheriteBaCO3
SSulfur
Sⓘ BaryteBaSO4
Sⓘ CovelliteCuS
CaCalcium
Caⓘ AlstoniteBaCa(CO3)2
Caⓘ AragoniteCaCO3
Caⓘ CalciteCaCO3
FeIron
Feⓘ GoethiteFe3+O(OH)
CuCopper
Cuⓘ CovelliteCuS
Cuⓘ MalachiteCu2(CO3)(OH)2
BaBarium
Baⓘ AlstoniteBaCa(CO3)2
Baⓘ BaryteBaSO4
Baⓘ WitheriteBaCO3

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

Alabaster, C. (1990) Alstonite and Barytocalcite from Llantrisant, South Wales, and Barytocalcite from Holwell, Mendip Hills, England. Journal of the Russell Society, 3 (1) 1-6
Quick NavTopCommoditiesMineral ListOther RegionsReferences
 
and/or  
Mindat.org® is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindat® and mindat.org® are registered trademarks of the Hudson Institute of Mineralogy.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
Content on this site may not be used to train, fine-tune, or otherwise develop artificial intelligence or machine learning models without prior written permission - see our Terms & Conditions.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: September 3, 2026 08:48:47 Page updated: September 29, 2025 04:59:39
Go to top of page