Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Hemimorphite from
Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK


07785700017272035581076.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02768850017272019481160.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
03436140017272019496050.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02817030017272019507727.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
07785700017272035581076.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02768850017272019481160.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
00031560017369907747804.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02817030017272019507727.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
07785700017272035581076.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02768850017272019481160.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
03436140017272019496050.jpg
Hemimorphite

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
02817030017272019507727.jpg
Hemimorphite, etc.

Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
Locality type:Mine
Classification
Species:Hemimorphite
Formula:Zn4Si2O7(OH)2 · H2O
Comments:Colourless to white crystal druses to several cms, and as divergent crystal groups to 4mm (XRD). Associated with goethite, rosasite, aurichalcite, hydrozincite.
Habit:Drusy crusts, bladed crystals
Colour:Colourless-white
Abundance at site:Very Rare
Confirmation
Validity:Confirmed
Confirmation Methods:XRD
Confirmation Details:Where Tested and Reference ID: University of Manchester
Associated Minerals:
Associates:Aurichalcite
Cerussite
Goethite
Malachite
Quartz
Rosasite
Associated Minerals Based on Photo Data:
Cerussite6
Bechererite5
Cuprite2
Namuwite2
Redgillite2
Susannite2
Hydrocerussite2
Schulenbergite2
Langite1
Linarite1
Schmiederite1
Covellite1
Rosasite1
Malachite1
Pyromorphite1
Data
Mineral Data:Click here to view Hemimorphite data
Locality Data:Click here to view Frongoch Mine, Pontrhydygroes, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
Photo GalleryView Gallery (7 photos)
Data Identifiers
Mindat Occurrence Record ID:39321
Long-form Identifier:1:3:39321:0
GUID (UUID V4):0
Nearest other occurrences of Hemimorphite
3.3km (2.1 miles) ⓘLogaulas Mine (Lisburne Mine; Logylas Mine), Lisburne Lead and Silver Mines, Ysbyty Ystwyth, Ceredigion, Wales, UK
4.3km (2.7 miles) ⓘGwaith-coch Mine, Devil's Bridge, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
4.6km (2.8 miles) ⓘPenrhiw Mine (Penyberth Mine), Ystumtuen, Cwmrheidol, Ceredigion, Wales, UK
4.7km (2.9 miles) ⓘHendre Felen Mine (Hendre quarry), Ysbyty Ystwyth, Ceredigion, Wales, UK
6.1km (3.8 miles) ⓘEsgair Mwyn Mine, Ysbyty Ystwyth, Ceredigion, Wales, UK
6.6km (4.1 miles) ⓘLlywernog Mine (Ponterwyd Mine), Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK
8.1km (5.0 miles) ⓘWest Nantycreiau Mine, Ponterwyd, Cwmrheidol, Ceredigion, Wales, UK
8.1km (5.0 miles) ⓘPengarigddu Mine, Goginan, Melindwr, Ceredigion, Wales, UK
8.2km (5.1 miles) ⓘCwmystwyth Mine, Cwmystwyth, Upper Llanfihangell-y-Creuddyn, Ceredigion, Wales, UK
8.3km (5.2 miles) ⓘBwlchrhennaid Mine (Level Newydd Mine), Pen-bont Rhydybeddau, Trefeirig, Ceredigion, Wales, UK
References
Green, D.I., Rust, S.A., Mason, J.S. (1996) Classic British mineral localities: Frongoch mine, Dyfed. UK Journal of Mines and Minerals 17, Rockbottom Publications. 29-39
Rust, Steve A. (2019) Minerals of the Frongoch Mine. Published by the author, 180 pages. ISBN 978-1-9162641-0-6.
 
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: October 21, 2026 06:34:32
Go to top of page