Vote for your favorite mineral in #MinCup26! - Monazite-(Ce) vs. Andalusite
It's a showdown with rare earth elemental ore Monazite-(Ce) and index mineral Andalusite.
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

Gold (commodity) from
Cascade tunnel, Ophir Mining District (Iron Springs Mining District), San Miguel County, Colorado, USA


Locality type:Tunnel
Classification
Commodity:Gold (commodity)
Data
Commodity Data:Click here to view Gold (commodity) data
Locality Data:Click here to view Cascade tunnel, Ophir Mining District (Iron Springs Mining District), San Miguel County, Colorado, USA
Data Identifiers
Mindat Occurrence Record ID:1132706
Long-form Identifier:1:3:1132706:4
GUID (UUID V4):0
Nearest other deposits of Gold (commodity)
0.5km (0.3 miles) ⓘMeldrum Tunnel, Telluride Mining District, Colorado, USA
0.5km (0.3 miles) ⓘUnion Flag Mine, Telluride Mining District, Colorado, USA
0.7km (0.4 miles) ⓘBay State Mine, Telluride Mining District, Colorado, USA
1.2km (0.8 miles) ⓘEldorado Mine, Savage Basin, Telluride Mining District, Colorado, USA
1.3km (0.8 miles) ⓘColumbia Mine, Savage Basin, Telluride Mining District, Colorado, USA
1.5km (0.9 miles) ⓘLower Columbia Mine, Savage Basin, Telluride Mining District, Colorado, USA
1.5km (0.9 miles) ⓘMayflower Mine, Bridal Veil Creek, Telluride Mining District, Colorado, USA
1.5km (1.0 miles) ⓘOld Kibbe shaft occurrence, Ophir Mining District (Iron Springs Mining District), San Miguel County, Colorado, USA
1.7km (1.1 miles) ⓘGold Block Mine, Telluride Mining District, Colorado, USA
1.7km (1.1 miles) ⓘMill tunnel (Mill Level tunnel), Telluride Mining District, Colorado, USA
 
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 7, 2026 11:05:41
Go to top of page