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

Dolomite from
Holmes Mine, Clayton County, Iowa, USA


Locality type:Mine
Classification
Species:Dolomite
Formula:CaMg(CO3)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Dolomite data
Locality Data:Click here to view Holmes Mine, Clayton County, Iowa, USA
Data Identifiers
Mindat Occurrence Record ID:1016319
Long-form Identifier:1:3:1016319:5
GUID (UUID V4):0
Nearest other occurrences of Dolomite
0.0km (0.0 miles) ⓘHolmes Mine, Miner's Creek, Guttenberg, Clayton County, Iowa, USA
1.4km (0.9 miles) ⓘKann Mine, Clayton County, Iowa, USA
5.5km (3.4 miles) ⓘUnnamed lead prospect (MRDS 10082018), Clayton County, Iowa, USA
14.0km (8.7 miles) ⓘQuarry (MRDS 10082017), Clayton County, Iowa, USA
15.3km (9.5 miles) ⓘSny Magill Mines, Clayton County, Iowa, USA
17.9km (11.1 miles) ⓘAtkinson Mine (Muscalunge Level), Beetown area, Grant County, Wisconsin, USA
18.5km (11.5 miles) ⓘSpellman Farm, Clayton County, Iowa, USA
19.8km (12.3 miles) ⓘElkader Mine, Clayton County, Iowa, USA
22.1km (13.7 miles) ⓘBridgeport Quarry, Bridgeport, Grant County, Wisconsin, USA
23.9km (14.9 miles) ⓘBlackjack Mine (Wilcox diggings), Beetown area, Grant County, Wisconsin, USA
References
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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 09:08:29
Go to top of page