Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Search FormMinerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Mass City, Ontonagon County, Michigan, USAi
Regional Level Types
Mass CityCensus-designated Place
Ontonagon CountyCounty
MichiganState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearchMineralogy
Latitude & Longitude (WGS84):
46° 45' 48'' North , 89° 4' 49'' West
Latitude & Longitude (decimal):
Nearest Settlements:
PlacePopulationDistance
Ontonagon1,324 (2017)21.4km
South Range746 (2017)47.6km
Hancock4,555 (2017)55.4km
Watersmeet428 (2017)55.6km
Mindat Locality ID:
14448
Long-form identifier:
mindat:1:2:14448:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Mass


Mass City (also known as Mass) is an unincorporated community and census-designated place.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

36 valid minerals.

Rock Types Recorded


Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Algodonite
Formula: (Cu1-xAsx)
ⓘ Anhydrite
Formula: CaSO4
ⓘ Atacamite
Formula: Cu2(OH)3Cl
ⓘ Azurite
Formula: Cu3(CO3)2(OH)2
ⓘ Brochantite
Formula: Cu4(SO4)(OH)6
ⓘ Calcite
Formula: CaCO3
Localities: Reported from at least 12 localities in this region.
ⓘ 'Chlorite Group'
Localities: Reported from at least 8 localities in this region.
ⓘ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
ⓘ Clinochlore
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Clinochlore var. Pennine
Formula: Mg5Al(AlSi3O10)(OH)8
ⓘ Crednerite
Formula: Cu+Mn3+O2
ⓘ Cuprite
Formula: Cu2O
ⓘ Datolite
Formula: CaB(SiO4)(OH)
Localities: Reported from at least 14 localities in this region.
ⓘ Dioptase
Formula: CuSiO3 · H2O
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Localities: Reported from at least 14 localities in this region.
ⓘ 'Feldspar Group'
ⓘ Ferberite
Formula: FeWO4
Description: Pseudomorph after scheelite
ⓘ Gerhardtite
Formula: Cu2(NO3)(OH)3
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Gypsum var. Selenite
Formula: CaSO4 · 2H2O
ⓘ Hematite
Formula: Fe2O3
ⓘ Jacquesdietrichite
Formula: Cu2(H2BO3)(OH)3
ⓘ 'K Feldspar'
Localities: Reported from at least 11 localities in this region.
ⓘ 'K Feldspar var. Adularia'
Formula: KAlSi3O8
ⓘ Kinoite
Formula: Ca2Cu2(H2O)2[Si3O10]
ⓘ Likasite
Formula: Cu3(NO3)(OH)5 · 2H2O
ⓘ Malachite
Formula: Cu2(CO3)(OH)2
ⓘ Microcline
Formula: K(AlSi3O8)
ⓘ Molybdenite
Formula: MoS2
References:
ⓘ Nantokite
Formula: CuCl
ⓘ Native Copper
Formula: Cu
Localities: Reported from at least 15 localities in this region.
ⓘ Native Silver
Formula: Ag
Localities: Reported from at least 9 localities in this region.
ⓘ Paramelaconite
Formula: Cu+2Cu2+2O3
Habit: Stepped tetragonal pyramids
Description: May be pseudomorphed by tenorite, cuprite and hematite. Xls to 5 cm.
ⓘ Paratacamite
Formula: Cu3(Cu,Zn)(OH)6Cl2
ⓘ Plancheite
Formula: Cu8(Si8O22)(OH)4 · H2O
ⓘ Prehnite
Formula: Ca2Al2Si3O10(OH)2
ⓘ Pumpellyite-(Mg)
Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Localities: Reported from at least 10 localities in this region.
ⓘ 'Pumpellyite Subgroup'
Formula: Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
ⓘ Quartz
Formula: SiO2
Localities: Reported from at least 14 localities in this region.
ⓘ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘ Tenorite
Formula: CuO
ⓘ Zeophyllite ?
Formula: Ca13Si10O28(OH)2F8 · 6H2O

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Copper1.AA.05Cu
ⓘNative Silver1.AA.05Ag
Group 2 - Sulphides and Sulfosalts
ⓘAlgodonite2.AA.10a(Cu1-xAsx)
ⓘMolybdenite2.EA.30MoS2
Group 3 - Halides
ⓘNantokite3.AA.05CuCl
ⓘAtacamite3.DA.10aCu2(OH)3Cl
ⓘParatacamite3.DA.10cCu3(Cu,Zn)(OH)6Cl2
Group 4 - Oxides and Hydroxides
ⓘCuprite4.AA.10Cu2O
ⓘParamelaconite4.AA.15Cu+2Cu2+2O3
ⓘCrednerite4.AB.05Cu+Mn3+O2
ⓘTenorite4.AB.10CuO
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
ⓘFerberite4.DB.30FeWO4
ⓘGoethite4.FD.10Fe3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘAzurite5.BA.05Cu3(CO3)2(OH)2
ⓘMalachite5.BA.10Cu2(CO3)(OH)2
ⓘGerhardtite5.NB.05Cu2(NO3)(OH)3
ⓘLikasite5.ND.05Cu3(NO3)(OH)5 · 2H2O
Group 6 - Borates
ⓘJacquesdietrichite6.AB.80Cu2(H2BO3)(OH)3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘAnhydrite7.AD.30CaSO4
ⓘBrochantite7.BB.25Cu4(SO4)(OH)6
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘvar. Selenite7.CD.40CaSO4 · 2H2O
Group 9 - Silicates
ⓘDatolite9.AJ.20CaB(SiO4)(OH)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘPumpellyite-(Mg)9.BG.20Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
ⓘKinoite9.BH.10Ca2Cu2(H2O)2[Si3O10]
ⓘDioptase9.CJ.30CuSiO3 · H2O
ⓘPrehnite9.DP.20Ca2Al2Si3O10(OH)2
ⓘPlancheite9.DP.55Cu8(Si8O22)(OH)4 · H2O
ⓘSaponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
ⓘClinochlore9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘvar. Pennine9.EC.55Mg5Al(AlSi3O10)(OH)8
ⓘChrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
ⓘZeophyllite ?9.EE.70Ca13Si10O28(OH)2F8 · 6H2O
ⓘMicrocline9.FA.30K(AlSi3O8)
Unclassified
ⓘ'K Feldspar
var. Adularia'
-KAlSi3O8
ⓘ'Chlorite Group'-
ⓘ'Feldspar Group'-
ⓘ'Pumpellyite Subgroup'-Ca2XAl2[Si2O6(OH)][SiO4](OH)2A
ⓘ'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hⓘ AtacamiteCu2(OH)3Cl
Hⓘ AzuriteCu3(CO3)2(OH)2
Hⓘ BrochantiteCu4(SO4)(OH)6
Hⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Hⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Hⓘ DioptaseCuSiO3 · H2O
Hⓘ DatoliteCaB(SiO4)(OH)
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ GerhardtiteCu2(NO3)(OH)3
Hⓘ GoethiteFe3+O(OH)
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ KinoiteCa2Cu2(H2O)2[Si3O10]
Hⓘ LikasiteCu3(NO3)(OH)5 · 2H2O
Hⓘ MalachiteCu2(CO3)(OH)2
Hⓘ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Hⓘ PlancheiteCu8(Si8O22)(OH)4 · H2O
Hⓘ PrehniteCa2Al2Si3O10(OH)2
Hⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Hⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Hⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Hⓘ ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
Hⓘ Gypsum var. SeleniteCaSO4 · 2H2O
Hⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Hⓘ JacquesdietrichiteCu2(H2BO3)(OH)3
BBoron
Bⓘ DatoliteCaB(SiO4)(OH)
Bⓘ JacquesdietrichiteCu2(H2BO3)(OH)3
CCarbon
Cⓘ AzuriteCu3(CO3)2(OH)2
Cⓘ CalciteCaCO3
Cⓘ MalachiteCu2(CO3)(OH)2
NNitrogen
Nⓘ GerhardtiteCu2(NO3)(OH)3
Nⓘ LikasiteCu3(NO3)(OH)5 · 2H2O
OOxygen
Oⓘ K Feldspar var. AdulariaKAlSi3O8
Oⓘ AnhydriteCaSO4
Oⓘ AtacamiteCu2(OH)3Cl
Oⓘ AzuriteCu3(CO3)2(OH)2
Oⓘ BrochantiteCu4(SO4)(OH)6
Oⓘ CalciteCaCO3
Oⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Oⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Oⓘ CredneriteCu+Mn3+O2
Oⓘ CupriteCu2O
Oⓘ DioptaseCuSiO3 · H2O
Oⓘ DatoliteCaB(SiO4)(OH)
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ FerberiteFeWO4
Oⓘ GerhardtiteCu2(NO3)(OH)3
Oⓘ GoethiteFe3+O(OH)
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HematiteFe2O3
Oⓘ KinoiteCa2Cu2(H2O)2[Si3O10]
Oⓘ LikasiteCu3(NO3)(OH)5 · 2H2O
Oⓘ MalachiteCu2(CO3)(OH)2
Oⓘ MicroclineK(AlSi3O8)
Oⓘ ParamelaconiteCu2+Cu22+O3
Oⓘ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Oⓘ PlancheiteCu8(Si8O22)(OH)4 · H2O
Oⓘ PrehniteCa2Al2Si3O10(OH)2
Oⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Oⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Oⓘ QuartzSiO2
Oⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Oⓘ TenoriteCuO
Oⓘ ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
Oⓘ Gypsum var. SeleniteCaSO4 · 2H2O
Oⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
Oⓘ JacquesdietrichiteCu2(H2BO3)(OH)3
FFluorine
Fⓘ ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
MgMagnesium
Mgⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Mgⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Mgⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Mgⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
AlAluminium
Alⓘ K Feldspar var. AdulariaKAlSi3O8
Alⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Alⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ MicroclineK(AlSi3O8)
Alⓘ PrehniteCa2Al2Si3O10(OH)2
Alⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Alⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Alⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Alⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
SiSilicon
Siⓘ K Feldspar var. AdulariaKAlSi3O8
Siⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Siⓘ ClinochloreMg5Al(AlSi3O10)(OH)8
Siⓘ DioptaseCuSiO3 · H2O
Siⓘ DatoliteCaB(SiO4)(OH)
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ KinoiteCa2Cu2(H2O)2[Si3O10]
Siⓘ MicroclineK(AlSi3O8)
Siⓘ PlancheiteCu8(Si8O22)(OH)4 · H2O
Siⓘ PrehniteCa2Al2Si3O10(OH)2
Siⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Siⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Siⓘ QuartzSiO2
Siⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Siⓘ ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
Siⓘ Clinochlore var. PennineMg5Al(AlSi3O10)(OH)8
SSulfur
Sⓘ AnhydriteCaSO4
Sⓘ BrochantiteCu4(SO4)(OH)6
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ MolybdeniteMoS2
Sⓘ Gypsum var. SeleniteCaSO4 · 2H2O
ClChlorine
Clⓘ AtacamiteCu2(OH)3Cl
Clⓘ NantokiteCuCl
Clⓘ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
KPotassium
Kⓘ K Feldspar var. AdulariaKAlSi3O8
Kⓘ MicroclineK(AlSi3O8)
CaCalcium
Caⓘ AnhydriteCaSO4
Caⓘ CalciteCaCO3
Caⓘ DatoliteCaB(SiO4)(OH)
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ KinoiteCa2Cu2(H2O)2[Si3O10]
Caⓘ PrehniteCa2Al2Si3O10(OH)2
Caⓘ Pumpellyite SubgroupCa2XAl2[Si2O6(OH)][SiO4](OH)2A
Caⓘ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Caⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Caⓘ ZeophylliteCa13Si10O28(OH)2F8 · 6H2O
Caⓘ Gypsum var. SeleniteCaSO4 · 2H2O
MnManganese
Mnⓘ CredneriteCu+Mn3+O2
FeIron
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ FerberiteFeWO4
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
CuCopper
Cuⓘ Algodonite(Cu1-xAsx)
Cuⓘ AtacamiteCu2(OH)3Cl
Cuⓘ AzuriteCu3(CO3)2(OH)2
Cuⓘ BrochantiteCu4(SO4)(OH)6
Cuⓘ ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
Cuⓘ CredneriteCu+Mn3+O2
Cuⓘ CupriteCu2O
Cuⓘ Native CopperCu
Cuⓘ DioptaseCuSiO3 · H2O
Cuⓘ GerhardtiteCu2(NO3)(OH)3
Cuⓘ KinoiteCa2Cu2(H2O)2[Si3O10]
Cuⓘ LikasiteCu3(NO3)(OH)5 · 2H2O
Cuⓘ MalachiteCu2(CO3)(OH)2
Cuⓘ NantokiteCuCl
Cuⓘ ParamelaconiteCu2+Cu22+O3
Cuⓘ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
Cuⓘ PlancheiteCu8(Si8O22)(OH)4 · H2O
Cuⓘ TenoriteCuO
Cuⓘ JacquesdietrichiteCu2(H2BO3)(OH)3
ZnZinc
Znⓘ ParatacamiteCu3(Cu,Zn)(OH)6Cl2
AsArsenic
Asⓘ Algodonite(Cu1-xAsx)
MoMolybdenum
Moⓘ MolybdeniteMoS2
AgSilver
Agⓘ Native SilverAg
WTungsten
Wⓘ FerberiteFeWO4

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/Mass_City,_Michigan
Wikidata ID:Q14716213
GeoNames ID:5001132

Localities in this Region

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.
 
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: October 21, 2026 07:34:50 Page updated: August 21, 2026 01:26:34
Go to top of page