SUPPORT US. If is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
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 ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
Mining CompaniesStatisticsUsersMineral MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Clooshgereen Mines (Cloosh Mine; Cregg Mine; Cloost Mine), Oughterard, Connemara, Co. Galway, Ireland

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84): 53° 24' 50'' North , 9° 20' 26'' West
Latitude & Longitude (decimal): 53.41389,-9.34056

Clooshgereen and Cregg mines were Victorian era workings for lead. Though it is in close proximity, the Cregg mine is a separate unrelated working on the same mineralization.

The Cregg mine consists of a single shaft working which has since been in-filled as a new house now occupies the site.

The Clooshgereen mine consists of 3 shafts and an intersecting adit level. The 3 shafts have been in-filled with only a minor subsidence evident at the location of the most northerly shaft. The adit level is still extant though the portal is blocked by large boulders likely put in place using a mechanical excavator. It is plausible that the adit level is open behind these boulders until it meets the first in-filled shaft. The landowner at the site recalls the level being open though partly water-filled several decades ago.

Mine Features

Feature ITM Coordinates Geodetic Co-ordinates Notes
Adit Level 510896 741243 53.413860 -9.340627 Blocked portal
Shaft 1 510828 741256 53.414753 -9.341803 In-filled.
Shaft 2 510807 741240 53.413787 -9.341585 In-filled.
Shaft 3 510786 741220 53.413601 -9.341942 In-filled.
Cregg Shaft510791 741350 53.414753 -9.341803 In-filled.

Mineral List

6 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on

Permian - Carboniferous
252.17 - 358.9 Ma
Carboniferous-Permian sedimentary rocks

Age: Paleozoic (252.17 - 358.9 Ma)

Lithology: Sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by, used under Creative Commons Attribution 4.0 License

This page contains all mineral locality references listed on 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 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.


Barry Flannery (personal observation 2008)
Barry Flannery (personal observation 12-12-2016)

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: December 9, 2019 15:50:49 Page generated: October 16, 2017 03:59:55
Go to top of page