Vote for your favorite mineral in #MinCup26! - Arsenuranylite vs. Talc
It's a pair of soft and lovely minerals as Stichtite and Talc compete 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

Silver (commodity) from
J. M. MacDonough Ranch Mine, Portola Valley, San Mateo County, California, USA


Locality type:Mine
Classification
Commodity:Silver (commodity)
Data
Commodity Data:Click here to view Silver (commodity) data
Locality Data:Click here to view J. M. MacDonough Ranch Mine, Portola Valley, San Mateo County, California, USA
Data Identifiers
Mindat Occurrence Record ID:1208041
Long-form Identifier:1:3:1208041:6
GUID (UUID V4):0
Nearest other deposits of Silver (commodity)
10.3km (6.4 miles) ⓘDurham Ranch Mine, Lobitos, San Mateo County, California, USA
13.6km (8.5 miles) ⓘRedwood City Operation Mine (Redwood City Mine), Redwood City, San Mateo County, California, USA
21.0km (13.0 miles) ⓘUnnamed Au-Ag-K mine [1], Pescadero, San Mateo County, California, USA
33.7km (20.9 miles) ⓘSouth San Francisco Land & Improvement Company Mine, South San Francisco, San Mateo County, California, USA
35.2km (21.8 miles) ⓘHooker Creek Mine, Lexington Hills, Santa Clara County, California, USA
44.6km (27.7 miles) ⓘLeona Mine (Leona Heights Mine), Leona Heights deposit, Leona Heights, Oakland, Oakland Hills (San Leandro Hills), Alameda County, California, USA
45.2km (28.1 miles) ⓘAlum Mine, Leona Heights, Oakland, Oakland Hills (San Leandro Hills), Alameda County, California, USA
55.2km (34.3 miles) ⓘMount Zion Mine, Diablo, Contra Costa County, California, USA
60.1km (37.3 miles) ⓘVasco Road pit, Altamont, Alameda County, California, USA
62.9km (39.1 miles) ⓘSan Pedro claim, Eagle Peak, Clayton, Contra Costa County, California, 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 8, 2026 07:59:56
Go to top of page