Vote for your favorite mineral in #MinCup26! - Cuprite vs. Orpiment
It's a fiery match of vibrant red Cuprite and just as saturated orange Orpiment battle 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

Third Term Mine, Third Term Mining District, Stansbury Mountains, Tooele County, Utah, USAi
Regional Level Types
Third Term MineMine
Third Term Mining DistrictMining District
Stansbury MountainsMountain Range
Tooele CountyCounty
UtahState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
40° 30' 3'' North , 112° 35' 51'' West
Latitude & Longitude (decimal):
Type:
Köppen climate type:
Nearest Settlements:
PlacePopulationDistance
Grantsville10,027 (2017)15.7km
Rush Valley475 (2017)19.7km
Stockton642 (2017)20.7km
Tooele33,157 (2017)25.5km
Erda4,642 (2011)27.7km
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
ClubLocationDistance
Tooele Gem & Mineral SocietyTooele, Utah26km
Mindat Locality ID:
184052
Long-form identifier:
mindat:1:2:184052:3
GUID (UUID V4):
0


Commodities (Major) - Lead, Silver; (Minor) - Copper
Deposit Type: Replacement Vein
Host Rock Unit: Gardner Dolomite
Structure: Deseret Anticline
Host Rock: Dolomite, Limestone
Tectonic Structure: Sevier Orogenic Belt

A 165 FT. ADIT INTERSECTS A 46 DEGREE INCLINED STOPE BEGUN FROM A GLORY HOLE 78 FT. ABOVE THE ADIT PORTAL. OTHER WORKINGS INCLUDE A CAVED-IN ADIT, 900 FT. LONG, DRIVEN FROM THE SOUTHWEST TO INTERSECT THE MINERALIZED ZONE, A 65 FT. CAVED-IN SHAFT ON A WEAKLY COPPER-MINERALIZED ZONE WITH AN INTERSECTING, 170 FT. ADIT, AND ASSOCIATED SHAFT ADITS AND PITS

MOST OF THE ORE WAS PRODUCED FROM THE GLORY HOLE THAT BECAME THE 100 FT., 46 DEGREE DECLINE. THE 900 FT. DRIFT DID NOT EXPOSE ANY ORE, BUT DID INTERSECT SOME FISSURES CARRYING IRON OXIDES. ; INFO.SRC : 3 FIELD OBSERV; 2 UNPUB REPT; 1 PUB LIT

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 1 - Elements
Native Copper1.AA.05Cu
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Group 5 - Nitrates and Carbonates
Dolomite5.AB.10CaMg(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
Jarosite7.BC.10KFe3+3(SO4)2(OH)6
Unclassified
'Limonite'-

List of minerals for each chemical element

HHydrogen
H JarositeKFe33+(SO4)2(OH)6
CCarbon
C DolomiteCaMg(CO3)2
OOxygen
O DolomiteCaMg(CO3)2
O HematiteFe2O3
O JarositeKFe33+(SO4)2(OH)6
MgMagnesium
Mg DolomiteCaMg(CO3)2
SSulfur
S JarositeKFe33+(SO4)2(OH)6
KPotassium
K JarositeKFe33+(SO4)2(OH)6
CaCalcium
Ca DolomiteCaMg(CO3)2
FeIron
Fe HematiteFe2O3
Fe JarositeKFe33+(SO4)2(OH)6
CuCopper
Cu Native CopperCu

Other Databases

Link to USGS MRDS:10019993

Other Regions, Features and Areas containing this locality


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

 
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 5, 2026 13:17:26 Page updated: August 18, 2025 03:43:02
Go to top of page