Help|Log In|Register|
Home PageMindat NewsThe Mindat ManualHistory of MindatCopyright StatusManagement TeamContact UsAdvertise on Mindat
Donate to MindatSponsor a PageSponsored PagesTop Available PagesMindat AdvertisersAdvertise on Mindat
Minerals by PropertiesMinerals by ChemistryAdvanced Locality SearchRandom MineralSearch by minIDLocalities Near MeSearch ArticlesSearch GlossaryMore Search Options
Search For:
Mineral Name:
Locality Name:
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
StatisticsThe ElementsMember ListBooks & MagazinesMineral Shows & EventsThe Mindat DirectoryHow to Link to MindatDevice Settings
Photo SearchPhoto GalleriesNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day Gallery

Black Wonder Mine, Pine Grove, Pine Grove District, East Belt, Amador Co., California, USA

This page is currently not sponsored. Click here to sponsor this page.
A former lode Au-Fe-Cu-Pb mine located in the SE¼ sec. 5, T6N, R12E, MDM, 2.0 km (1.2 miles) SW of Pine Grove, along Jackson Creek (E of state highway 88), on private land. Owned by George B. and Florence Taves (1953). Operated in 1931 and 1933 to 1934. Closed in 1935. MRDS database stated accuracy for this location is 500 meters. Work started in 1931 and was operated by various operators until 1935. Mine has been idle since.

Mineralization is a vein deposit hosted in greenstone. The ore body strikes NW and dips 60-70SW at a thickness of 1.22 meters. The quartz vein is 3 to 4 feet thick in blocky greenastone. A 9 inch (22.5 cm) thick vein of galena was encountered at the end of the drift on the 45 foot level. Free gold is associated with pyrite, minor chalcopyrite and some galena. Local rocks include Paleozoic marine rocks, undivided, unit 4 (Western Sierra Nevada).

Workings include underground openings comprised of a 110 foot shaft with 30 feet of drifts at the 45 foot level.

Production data are found in: Carlson, D.W. & W.B. Clark (1954).

A shipment of 800 pounds of ore in 1933 contained $173 of Au at $20.67 per ounce.

Mineral List

4 entries listed. 4 valid minerals.

The above list contains all mineral locality references listed on 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 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.


Carlson, D.W. & W.B. Clark (1954), Mines and Minerals of Amador County, California: California Journal of Mines and Geology (Report 50): 50: 172, 240, Pl. 1.

Goodwin, Joseph Grant (1957) Lead and zinc in California. California Journal of Mines and Geology, Division of Mines (Report 53): 53(3&4): 416.

USGS (2005), Mineral Resources Data System (MRDS): U.S. Geological Survey, Reston, Virginia, loc. file ID #10028290 & 10138597.

U.S. Bureau of Mines, Minerals Availability System (MAS) file ID #0060050346.

Mineral and/or Locality is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3) not-for-profit organization.
Copyright © and the Hudson Institute of Mineralogy 1993-2017, except where stated. relies on the contributions of thousands of members and supporters.
Privacy Policy - Terms & Conditions - Contact Us Current server date and time: October 21, 2017 02:14:37 Page generated: February 25, 2015 02:53:11
Go to top of page