SUPPORT US. If mindat.org is important to you, click here to donate to our Fall 2019 fundraiser!
Log InRegister
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 ElementsBooks & Magazines
Minerals by PropertiesMinerals by ChemistryAdvanced 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 MuseumsMineral Shows & EventsThe Mindat DirectoryDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryMineral Photography

Trojan, Trojan District, Lawrence Co., South Dakota, USA

This page is currently not sponsored. Click here to sponsor this page.
Key
Lock Map
Latitude & Longitude (WGS84): 44° 20' 31'' North , 103° 50' 16'' West
Latitude & Longitude (decimal): 44.34221,-103.83798
GeoHash:G#: 9xyhm072p
Köppen climate type:Dfb : Warm-summer humid continental climate


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

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

3 valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
'Sylvanite'2.EA.05(Au,Ag)2Te4
Group 3 - Halides
'Atacamite'3.DA.10aCu2(OH)3Cl
'Chlorargyrite'3.AA.15AgCl

List of minerals arranged by Dana 8th Edition classification

Group 2 - SULFIDES
AmBnXp, with (m+n):p = 1:2
Sylvanite2.12.13.3(Au,Ag)2Te4
Group 9 - NORMAL HALIDES
AX
Chlorargyrite9.1.4.1AgCl
Group 10 - OXYHALIDES AND HYDROXYHALIDES
A2(O,OH)3Xq
Atacamite10.1.1.1Cu2(OH)3Cl

List of minerals for each chemical element

HHydrogen
H AtacamiteCu2(OH)3Cl
OOxygen
O AtacamiteCu2(OH)3Cl
ClChlorine
Cl AtacamiteCu2(OH)3Cl
Cl ChlorargyriteAgCl
CuCopper
Cu AtacamiteCu2(OH)3Cl
AgSilver
Ag ChlorargyriteAgCl
Ag Sylvanite(Au,Ag)2Te4
TeTellurium
Te Sylvanite(Au,Ag)2Te4
AuGold
Au Sylvanite(Au,Ag)2Te4

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Permian - Devonian
251.902 - 419.2 Ma



ID: 3190647
Paleozoic sedimentary rocks

Age: Phanerozoic (251.902 - 419.2 Ma)

Lithology: Sedimentary rocks

Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529. [154]

Late Ordovician - Middle Cambrian
443.8 - 511 Ma



ID: 2882414
Whitewood Limestone, Winnipeg Formation, and Deadwood Formation

Age: Paleozoic (443.8 - 511 Ma)

Stratigraphic Name: Whitewood Limestone; Winnipeg Formation; Deadwood Formation

Description: Whitewood Limestone (Ordovician)- Mottled, tan, gray to lavender, fine- to medium-crystalline, sparsely fossiliferous limestone and dolomite. Thickness up to 70 ft (21 m). Winnipeg Formation (Ordovician)- Grat and light-green, fissile shale, and tan, calcareous siltstone, sandy shale, and limestone lenses. Thickness up to 110 ft (34 m). Deadwood Formation (Ordovician to Cambrian)- Variegated, yellow to red, brown, gray, and green, glauconitic, conglomerate, sandstone, shale, dolomitic limestone, and dolomite. Thickness 4-400 ft (1-122 m).

Lithology: Major:{conglomerate,sandstone,shale}, Minor:{limestone,dolostone,siltstone}

Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. [133]

Early Ordovician - Late Cambrian
470 - 501 Ma



ID: 2474757
Deadwood Formation

Age: Paleozoic (470 - 501 Ma)

Stratigraphic Name: Deadwood Formation

Description: Glauconitic sandstone, shale, siltstone, and conglomerate. Thickness 0–200 m.

Reference: Redden, J.A., E. DeWitt. Maps Showing Geology, Structure, and Geophysics of the Central Black Hills, South Dakota. U.S. Geological Survey Scientific Investigations Map 2777. [73]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License

Localities in this Region
Show map

USA
  • South Dakota

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.
 
Mineral and/or Locality  
Mindat.org is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization. Public Relations by Blytheweigh.
Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2019, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: September 19, 2019 09:54:27 Page generated: August 15, 2018 03:27:48
Go to top of page