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

Sylvanite from
Empress Josephine Mine (Empress Josephine claim; Boss Mammoth claim), Bonanza, Bonanza Mining District (Kerber Creek Mining District; Blake Mining District), Saguache County, Colorado, USA


Locality type:Mine
Classification
Species:Sylvanite
Formula:AgAuTe4
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sylvanite data
Locality Data:Click here to view Empress Josephine Mine (Empress Josephine claim; Boss Mammoth claim), Bonanza, Bonanza Mining District (Kerber Creek Mining District; Blake Mining District), Saguache County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:356128
Long-form Identifier:1:3:356128:7
GUID (UUID V4):0
Nearest other occurrences of Sylvanite
1.8km (1.1 miles) ⓘHortense Mine, Bonanza Mining District (Kerber Creek Mining District; Blake Mining District), Saguache County, Colorado, USA
31.3km (19.4 miles) ⓘMadonna Mine, Monarch Mining District, Chaffee County, Colorado, USA
72.1km (44.8 miles) ⓘBassick Mine (Claims: Queen Victoria; Triangle; Nemeha; William; Augusta; Maine; Georgia), Rosita Mining District, Custer County, Colorado, USA
72.9km (45.3 miles) ⓘLucille Mine, Rosita Mining District, Custer County, Colorado, USA
75.9km (47.2 miles) ⓘVulcan Mine, Vulcan Mining District (Cebolla Mining District; Domingo Mining District), Gunnison County, Colorado, USA
76.0km (47.2 miles) ⓘMammoth Chimney Mine, Vulcan Mining District (Cebolla Mining District; Domingo Mining District), Gunnison County, Colorado, USA
76.5km (47.6 miles) ⓘGood Hope Mine (Mammoth Good Hope Mine; Mammoth-Good Hope Mine; Mammoth Chimney Mine), Vulcan, Vulcan Mining District (Cebolla Mining District; Domingo Mining District), Gunnison County, Colorado, USA
84.4km (52.4 miles) ⓘCarbonate King mine, Guffey Mining District, Park County, Colorado, USA
96.4km (59.9 miles) ⓘMcMillan Group, Blanca Mining District, Huerfano County, Colorado, USA
96.8km (60.2 miles) ⓘEl Paso Mine, Cripple Creek, Cripple Creek Mining District, Teller County, Colorado, USA
References
Crawford, Wm. P. (1930) Notes on rickardite, a new occurrence. American Mineralogist, 15 (7) 272-273
(2005) Mineral Resources Data System (MRDS), US Geological Survey.
 
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 22, 2026 04:50:43
Go to top of page