WebSafe 3.7mindat.org
|
|
๐Ÿ 
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 Time
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
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 ColorNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Adventure mine, Greenland, Greenland Township, Ontonagon County, Michigan, USAi
Regional Level Types
Adventure mineMine
GreenlandCensus-designated Place
Greenland TownshipTownship
Ontonagon CountyCounty
MichiganState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
Latitude & Longitude (WGS84):
46ยฐ 46' 27'' North , 89ยฐ 4' 54'' West
Latitude & Longitude (decimal):
Type:
Nearest Settlements:
PlacePopulationDistance
Ontonagon1,324 (2017)20.7km
South Range746 (2017)46.8km
Mindat Locality ID:
8384
Long-form identifier:
mindat:1:2:8384:6
GUID (UUID V4):
0
Other/historical names associated with this locality:
Adventure Consolidated Mine


Introduction
An underground copper mine consisting of three shafts and at least one adit. It is located just south of the town of Greenland, about 15 miles SE of Ontonagon.

History
The Adventure Mining Co. organized in 1850. In 1858 it purchased the Merchants Co. property. In 1870 the company was sold and reorganized under the same name. In 1898, the company was sold again and reorganized under the Adventure Consolidated Copper Co. This consolidation included the Adventure, Hilton, and Knowlton mines. The company suspended all operation in October of 1917.

Production
The mine produced approx. 11 million lbs. of refined copper.

For the Collector
The mine is currently open as a tourist attraction, and tours are given underground during the summer months. Minerals that can be found on the surface piles include copper, silver, and quartz.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Detailed Mineral List:

โ“˜ Calcite
Formula: CaCO3
โ“˜ 'Chlorite Group'
โ“˜ Cuprite
Formula: Cu2O
โ“˜ Datolite
Formula: CaB(SiO4)(OH)
โ“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
โ“˜ 'K Feldspar'
โ“˜ 'K Feldsparย var. Adularia'
Formula: KAlSi3O8
โ“˜ Laumontite
Formula: CaAl2Si4O12 ยท 4H2O
โ“˜ Microcline
Formula: K(AlSi3O8)
โœช Native Copper
Formula: Cu
Habit: Wires to several cm
Colour: red brown
Fluorescence: none
Description: The wires were found in 1980
โ“˜ Native Silver
Formula: Ag
โ“˜ Prehnite
Formula: Ca2Al2Si3O10(OH)2
References:
โ“˜ Pumpellyite-(Mg)
Formula: Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
โ“˜ Quartz
Formula: SiO2
โ“˜ Saponite
Formula: Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
โ“˜ Tenorite
Formula: CuO
References:

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
โ“˜Native Copper1.AA.05Cu
โ“˜Native Silver1.AA.05Ag
Group 4 - Oxides and Hydroxides
โ“˜Cuprite4.AA.10Cu2O
โ“˜Tenorite4.AB.10CuO
โ“˜Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
โ“˜Calcite5.AB.05CaCO3
Group 9 - Silicates
โ“˜Datolite9.AJ.20CaB(SiO4)(OH)
โ“˜Epidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
โ“˜Pumpellyite-(Mg)9.BG.20Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
โ“˜Prehnite9.DP.20Ca2Al2Si3O10(OH)2
โ“˜Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
โ“˜Microcline9.FA.30K(AlSi3O8)
โ“˜Laumontite9.GB.10CaAl2Si4O12 ยท 4H2O
Unclassified
โ“˜'K Feldspar
var. Adularia'
-KAlSi3O8
โ“˜'Chlorite Group'-
โ“˜'K Feldspar'-

List of minerals for each chemical element

HHydrogen
Hโ“˜ DatoliteCaB(SiO4)(OH)
Hโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hโ“˜ LaumontiteCaAl2Si4O12 ยท 4H2O
Hโ“˜ PrehniteCa2Al2Si3O10(OH)2
Hโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Hโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
BBoron
Bโ“˜ DatoliteCaB(SiO4)(OH)
CCarbon
Cโ“˜ CalciteCaCO3
OOxygen
Oโ“˜ K Feldspar var. AdulariaKAlSi3O8
Oโ“˜ CalciteCaCO3
Oโ“˜ CupriteCu2O
Oโ“˜ DatoliteCaB(SiO4)(OH)
Oโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oโ“˜ LaumontiteCaAl2Si4O12 ยท 4H2O
Oโ“˜ MicroclineK(AlSi3O8)
Oโ“˜ PrehniteCa2Al2Si3O10(OH)2
Oโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Oโ“˜ QuartzSiO2
Oโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
Oโ“˜ TenoriteCuO
MgMagnesium
Mgโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Mgโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
AlAluminium
Alโ“˜ K Feldspar var. AdulariaKAlSi3O8
Alโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alโ“˜ LaumontiteCaAl2Si4O12 ยท 4H2O
Alโ“˜ MicroclineK(AlSi3O8)
Alโ“˜ PrehniteCa2Al2Si3O10(OH)2
Alโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Alโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
SiSilicon
Siโ“˜ K Feldspar var. AdulariaKAlSi3O8
Siโ“˜ DatoliteCaB(SiO4)(OH)
Siโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siโ“˜ LaumontiteCaAl2Si4O12 ยท 4H2O
Siโ“˜ MicroclineK(AlSi3O8)
Siโ“˜ PrehniteCa2Al2Si3O10(OH)2
Siโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Siโ“˜ QuartzSiO2
Siโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
KPotassium
Kโ“˜ K Feldspar var. AdulariaKAlSi3O8
Kโ“˜ MicroclineK(AlSi3O8)
CaCalcium
Caโ“˜ CalciteCaCO3
Caโ“˜ DatoliteCaB(SiO4)(OH)
Caโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caโ“˜ LaumontiteCaAl2Si4O12 ยท 4H2O
Caโ“˜ PrehniteCa2Al2Si3O10(OH)2
Caโ“˜ Pumpellyite-(Mg)Ca2MgAl2[Si2O6OH][SiO4](OH)2(OH)
Caโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
FeIron
Feโ“˜ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feโ“˜ SaponiteCa0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 ยท nH2O
CuCopper
Cuโ“˜ CupriteCu2O
Cuโ“˜ Native CopperCu
Cuโ“˜ TenoriteCuO
AgSilver
Agโ“˜ Native SilverAg

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



ย 
Mindat.orgยฎ is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Mindatยฎ and mindat.orgยฎ are registered trademarks of the Hudson Institute of Mineralogy.
Copyright ยฉ mindat.org and the Hudson Institute of Mineralogy 1993-2026, except where stated. Most political location boundaries are ยฉ OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph and Ida Chau.
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), 833โ€“844. doi:10.2138/am-2024-9486.
Privacy Policy - Terms & Conditions - Contact Us / DMCA issues - Report a bug/vulnerability Current server date and time: February 24, 2026 01:00:14 Page updated: November 20, 2025 06:37:47
Go to top of page