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

Hemlock Mine, Amasa, Hematite Township, Iron County, Michigan, USAi
Regional Level Types
Hemlock MineMine
AmasaUnincorporated Community
Hematite TownshipTownship
Iron CountyCounty
MichiganState
USACountry
Hemlock Mine, Menominee Iron Range mining district, Michigan, USA

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
46° 14' 11'' North , 88° 26' 49'' West
Latitude & Longitude (decimal):
46.23639,-88.44722
GeoHash:
G#: f01p534dq
GRN:
N31W45
Type:
Mine
Köppen climate type:
Dfb : Warm-summer humid continental climate
Nearest Settlements:
PlacePopulationDistance
Amasa283 (2017)0.5km
Crystal Falls1,414 (2017)17.7km
Mineral Hills, Iron River219 (2017)20.6km
Iron River2,904 (2017)21.9km
Alpha138 (2017)22.1km
Mindat Locality ID:
124405
Long-form identifier:
mindat:1:2:124405:5
GUID (UUID V4):
0


Commodities (Major) - Iron
Deposit Type: Banded Iron-Rich Sedimentary Deposits
Development Status: Past Producer
Deposit Model: 241: Superior Fe (BC name is Lake Superior & Rapitan types iron-formation)
Host Rock Unit: Amasa Iron Formation
Host Rock: Iron Formation

An iron mine operated by Hemlock River Mining Co during 1891 through 1919, shipping 2.1 million tons of ore. Workings reached 500 feet depth. The mine exploited the middle-Precambrian Amasa Iron Formation of the Baraga Group. The property description is W1/2-SW Sec. 4 T44N-R33W, which is 80 acres between N46º13'55", N46º14'21", W88º26'42", and W88º27'1".

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


4 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2

List of minerals for each chemical element

HHydrogen
Hⓘ GoethiteFe3+O(OH)
OOxygen
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ QuartzSiO2
SiSilicon
Siⓘ QuartzSiO2
FeIron
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ MagnetiteFe2+Fe23+O4

Other Regions, Features and Areas containing this locality

North AmericaContinent
North America PlateTectonic Plate
USA

This page contains all mineral locality references listed on mindat.org. 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 mindat.org 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.

References

Lake Superior Iron Ore Association (1952) Lake Superior Iron Ores: Mining Directory and Statistical Record of the Lake Superior Iron Ore District of the United States and Canada. Cleveland, Ohio. 334 pages.
Bayley, R.W., Dutton, C.E., Lamey, C.A. (1966) Geology of the Menominee Iron-Bearing District, Dickinson County, Michigan and Florence and Marinette Counties, Wisconsin. United States Geological Survey Professional Paper 513. 96 pages.
Bernhardt D.E. (2001) Men, Mines, and Memories: Iron Mining in Iron County, Michigan. Iron County Historical Museum, Caspian, Michigan.
Quick NavTopCommoditiesMineral ListRock TypesOther RegionsReferences
 
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 01:39:39 Page updated: August 11, 2025 23:50:28
Go to top of page