Vote for your favorite mineral in #MinCup26! - Erythrite vs. Skutterudite
Pretty pink and poisonous Erythrite is against its shiny silver and structurally-useful Skutterudite.
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

Llandybie (Llandebie), Carmarthenshire, Wales, UKi
Regional Level Types
Llandybie (Llandebie)- not defined -
CarmarthenshireCounty
WalesCountry
UKCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
51° 49' 1'' North , 4° 0' 23'' West
Latitude & Longitude (decimal):
51.81695,-4.00667
GeoHash:
G#: gcjnubfrt
GRN:
N35W02
UK National Grid Reference:
SN617151
Köppen climate type:
Cfb : Temperate oceanic climate
Nearest Settlements:
PlacePopulationDistance
Llandybie2,813 (2017)0.4km
Ammanford23,709 (2017)3.0km
Tycroes2,156 (2016)4.4km
Glanamman4,168 (2016)5.4km
Cross Hands4,549 (2016)6.2km
Mindat Locality ID:
10180
Long-form identifier:
mindat:1:2:10180:7
GUID (UUID V4):
0
Other/historical names associated with this locality:
Dyfed


Brammallite, recorded as a new mineral in 1943, is named after Dr Alfred Brammall, formerly of the Department of Geology at Imperial College of Science & Technology, London. Although the type locality is at Llandebie (Llandybie), the exact location is not recorded (but was most likely from the opencast coal mines here. The grid reference given is for the village of Llandebie itself.

At Llandebie, brammallite occurs as compact, white, flaky tufts, reminiscent of satin spar, formed by aggregates of elongated plates about 0.5 mm in length and 0.001 mm across, on shale.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


2 valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

Detailed Mineral List:

ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
ⓘ Paragonite var. Brammallite (FRL)
Formula: NaAl2(AlSi3O10)(OH)2
Type Locality:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 9 - Silicates
ⓘParagonite
var. Brammallite (TL)		9.EC.15NaAl2(AlSi3O10)(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘParagonite9.EC.15NaAl2(AlSi3O10)(OH)2

List of minerals for each chemical element

HHydrogen
Hⓘ Paragonite var. BrammalliteNaAl2(AlSi3O10)(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
OOxygen
Oⓘ Paragonite var. BrammalliteNaAl2(AlSi3O10)(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
NaSodium
Naⓘ Paragonite var. BrammalliteNaAl2(AlSi3O10)(OH)2
Naⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
AlAluminium
Alⓘ Paragonite var. BrammalliteNaAl2(AlSi3O10)(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
SiSilicon
Siⓘ Paragonite var. BrammalliteNaAl2(AlSi3O10)(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
KPotassium
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2

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.
Quick NavTopMineral ListOther Regions
 
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 2, 2026 01:53:22 Page updated: August 13, 2025 09:22:57
Go to top of page