Vote for your favorite mineral in #MinCup26! - Bournonite vs. Vesuvianite
Cogwheels of bournonite are up against colourful vesuvianite.
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

Ludlamite from
Dan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA


Locality type:Mine
Classification
Species:Ludlamite
Formula:Fe32+(PO4)2 · 4H2O
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Phosphoferrite1
Data
Mineral Data:Click here to view Ludlamite data
Locality Data:Click here to view Dan Patch Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:212242
Long-form Identifier:1:3:212242:7
GUID (UUID V4):0
Nearest other occurrences of Ludlamite
2.4km (1.5 miles) ⓘEtta Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
3.4km (2.1 miles) ⓘWhite Cap Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
5.8km (3.6 miles) ⓘBig Chief Mine, Glendale, Keystone Mining District, Pennington County, South Dakota, USA
6.1km (3.8 miles) ⓘBarker-Ferguson Mine, Keystone, Keystone Mining District, Pennington County, South Dakota, USA
6.8km (4.2 miles) ⓘWood Tin mine, Harney City, Pennington County, South Dakota, USA
19.0km (11.8 miles) ⓘBull Moose Mine, Custer, Custer Mining District, Custer County, South Dakota, USA
27.0km (16.8 miles) ⓘTip Top Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
References
Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635
 
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 4, 2026 02:24:05
Go to top of page