Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete for your votes.
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

Grunerite from
Unnamed outcrop (4), Humboldt Township, Marquette County, Michigan, USA


Classification
Species:Grunerite
Formula:◻Fe22+Fe52+(Si8O22)(OH)2
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Grunerite data
Locality Data:Click here to view Unnamed outcrop (4), Humboldt Township, Marquette County, Michigan, USA
Data Identifiers
Mindat Occurrence Record ID:415972
Long-form Identifier:1:3:415972:8
GUID (UUID V4):0
Nearest other occurrences of Grunerite
0.7km (0.4 miles) ⓘMichigan prospect, Ely Township, Marquette County, Michigan, USA
2.4km (1.5 miles) ⓘUnnamed locality (2), Humboldt Township, Marquette County, Michigan, USA
2.9km (1.8 miles) ⓘMount Humboldt, Humboldt Township, Marquette County, Michigan, USA
8.2km (5.1 miles) ⓘGreenwood Mine, Greenwood, Ely Township, Marquette County, Michigan, USA
9.1km (5.7 miles) ⓘEast Mine, Champion, Champion Township, Marquette County, Michigan, USA
10.9km (6.8 miles) ⓘChampion Mine, Champion, Champion Township, Marquette County, Michigan, USA
11.7km (7.3 miles) ⓘFoster-Lothian area, Tilden Township, Marquette County, Michigan, USA
12.2km (7.6 miles) ⓘRepublic Mine, Republic, Republic Township, Marquette County, Michigan, USA
12.5km (7.8 miles) ⓘM-95 bridge, Republic, Republic Township, Marquette County, Michigan, USA
15.5km (9.6 miles) ⓘLake Bancroft, Ishpeming, Marquette County, Michigan, USA
References
Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp.
 
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 8, 2026 11:14:30
Go to top of page