Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of 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

South Pass City, South Pass-Atlantic City Mining District, Fremont County, Wyoming, USAi
Regional Level Types
South Pass CityUnincorporated Community
South Pass-Atlantic City Mining DistrictMining District
Fremont CountyCounty
WyomingState
USACountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosMapsSearch
Latitude & Longitude (WGS84):
42° 28' 8'' North , 108° 48' 11'' West
Latitude & Longitude (decimal):
Mindat Locality ID:
18570
Long-form identifier:
mindat:1:2:18570:2
GUID (UUID V4):
0


South Pass City is an unincorporated community in Fremont County, Wyoming, United States. It is located 2 miles (3 km) south of the intersection of highways 28 and 131. A former station on the Oregon Trail, it became a ghost town after later gold mines were closed. The entire community is listed on the National Register of Historic Places. The closest town is Atlantic City. Some people have returned.

South Pass City developed rapidly as a stage and telegraph station on the Oregon Trail during the 1850s. The site of the first settlement in the area was about 9 miles (14 km) south of present-day South Pass City, at what is today known as Burnt Ranch. Burnt Ranch was located where the Emigrant Trails crossed the Sweetwater River for the last time and ascended toward the South Pass.

In August 1861, 25-year-old Samuel Clemens (later Mark Twain) passed through South Pass City via stagecoach with his brother Orion, newly appointed as Secretary of Nevada Territory. Mark Twain later wrote about the experience in Roughing It, first published in 1872: "... we hove in sight of South Pass City. The hotelkeeper, the postmaster, the blacksmith, the mayor, the constable, the city marshal and the principal citizen and property holder, all came out and greeted us cheerily, and we gave him good day. He gave us a little Indian news, and a little Rocky Mountain news, and we gave him some Plains information in return. He then retired to his lonely grandeur and we climbed on up among the bristling peaks and the ragged clouds. South Pass City consisted of four log cabins, one of which was unfinished, and the gentleman with all those offices and titles was the chiefest of the ten citizens of the place. Think of hotelkeeper, postmaster, blacksmith, mayor, constable, city marshal and principal citizen all condensed into one person and crammed into one skin. [Fellow passenger] Bemis said he was 'a perfect Allen's revolver of dignities.' [The Allen was a small revolver notorious for sometimes firing all six chambers at once, according to Mark Twain.] And he said that if he were to die as postmaster, or as blacksmith, or as postmaster and blacksmith both, the people might stand it; but if he were to die all over, it would be a frightful loss to the community."

In 1866, gold was discovered in the vicinity, and a year later prospecting began on what would become the Carissa mine. Prospectors and adventurers quickly arrived and founded South Pass City. Within a year, the community's population had swelled to about 2,000. One of those who arrived in 1869 was Esther Hobart Morris. In 1870, she became the first woman in the United States to serve as a Justice of the Peace. At her urging in 1869, William H. Bright, a saloon owner and representative to the Wyoming Territorial Constitutional Convention, introduced a women's suffrage clause into the territorial constitution. When the constitution was approved by Territorial Governor John A. Campbell in December 1869, Wyoming became the first jurisdiction in the United States to grant women the right to vote, a right which was not granted to women nationally until 1920.

Within a decade, the city's population shrank dramatically, as the large gold deposits that had been hoped for failed to materialize. By the mid-1870s South Pass City's population was reduced to about 100 people but apparently grew to 180 by 1901. Over the next century, the population of South Pass City declined even further. Many of the city's homes, mercantile stores, hotels and saloons fell into disrepair. A few businesses continued to operate in South Pass City, with the last of the pioneer families finally moving out in 1949.

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

16 valid minerals.

Detailed Mineral List:

Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Arsenopyrite
Formula: FeAsS
Calcite
Formula: CaCO3
'Chlorite Group'
Hematite
Formula: Fe2O3
Muscovite
Formula: KAl2(AlSi3O10)(OH)2
Muscovite var. Sericite
Formula: KAl2(AlSi3O10)(OH)2
Native Gold
Formula: Au
Localities: Reported from at least 10 localities in this region.
Description: Native
Native Silver
Formula: Ag
Native Sulphur
Formula: S8
Orpiment
Formula: As2S3
Pyrite
Formula: FeS2
Pyrrhotite
Formula: Fe1-xS
Quartz
Formula: SiO2
Realgar
Formula: As4S4
Scorodite
Formula: Fe3+AsO4 · 2H2O
Talc
Formula: Mg3Si4O10(OH)2
'Tourmaline'
Formula: AD3G6 (T6O18)(BO3)3X3Z
Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Native Gold1.AA.05Au
Native Silver1.AA.05Ag
Native Sulphur1.CC.05S8
Group 2 - Sulphides and Sulfosalts
Pyrrhotite2.CC.10Fe1-xS
Pyrite2.EB.05aFeS2
Arsenopyrite2.EB.20FeAsS
Realgar2.FA.15aAs4S4
Orpiment2.FA.30As2S3
Group 4 - Oxides and Hydroxides
Hematite4.CB.05Fe2O3
Quartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
Calcite5.AB.05CaCO3
Group 8 - Phosphates, Arsenates and Vanadates
Scorodite8.CD.10Fe3+AsO4 · 2H2O
Group 9 - Silicates
Actinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Tremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
Talc9.EC.05Mg3Si4O10(OH)2
Muscovite9.EC.15KAl2(AlSi3O10)(OH)2
var. Sericite9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
'Chlorite Group'-
'Tourmaline'-AD3G6 (T6O18)(BO3)3X3Z

List of minerals for each chemical element

HHydrogen
H Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
H MuscoviteKAl2(AlSi3O10)(OH)2
H ScoroditeFe3+AsO4 · 2H2O
H TalcMg3Si4O10(OH)2
H Tremolite◻Ca2Mg5(Si8O22)(OH)2
H Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
BBoron
B TourmalineAD3G6 (T6O18)(BO3)3X3Z
CCarbon
C CalciteCaCO3
OOxygen
O Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
O CalciteCaCO3
O HematiteFe2O3
O MuscoviteKAl2(AlSi3O10)(OH)2
O QuartzSiO2
O ScoroditeFe3+AsO4 · 2H2O
O TalcMg3Si4O10(OH)2
O TourmalineAD3G6 (T6O18)(BO3)3X3Z
O Tremolite◻Ca2Mg5(Si8O22)(OH)2
O Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
MgMagnesium
Mg Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mg TalcMg3Si4O10(OH)2
Mg Tremolite◻Ca2Mg5(Si8O22)(OH)2
AlAluminium
Al MuscoviteKAl2(AlSi3O10)(OH)2
Al Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SiSilicon
Si Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Si MuscoviteKAl2(AlSi3O10)(OH)2
Si QuartzSiO2
Si TalcMg3Si4O10(OH)2
Si Tremolite◻Ca2Mg5(Si8O22)(OH)2
Si Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
SSulfur
S ArsenopyriteFeAsS
S OrpimentAs2S3
S PyriteFeS2
S PyrrhotiteFe1-xS
S RealgarAs4S4
S Native SulphurS8
KPotassium
K MuscoviteKAl2(AlSi3O10)(OH)2
K Muscovite var. SericiteKAl2(AlSi3O10)(OH)2
CaCalcium
Ca Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Ca CalciteCaCO3
Ca Tremolite◻Ca2Mg5(Si8O22)(OH)2
FeIron
Fe Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Fe ArsenopyriteFeAsS
Fe HematiteFe2O3
Fe PyriteFeS2
Fe PyrrhotiteFe1-xS
Fe ScoroditeFe3+AsO4 · 2H2O
AsArsenic
As ArsenopyriteFeAsS
As OrpimentAs2S3
As RealgarAs4S4
As ScoroditeFe3+AsO4 · 2H2O
AgSilver
Ag Native SilverAg
AuGold
Au Native GoldAu

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/South_Pass_City,_Wyoming
Wikidata ID:Q499629
GeoNames ID:5839265

Localities in this Region

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.
 
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 3, 2026 13:52:52 Page updated: August 9, 2025 11:25:25
Go to top of page