National Register of Historic Places
Black Diamond Mines
Antioch vicinity, Contra Costa County, California
The record
- Listed
- October 2, 1991
- Type
- Historic district
- Address
- Somersville Rd. SE of Antioch, Antioch vicinity
- County
- Contra Costa
- State
- California
- Period of significance
- 1850 to 1949
- Contributing resources
- 3 sites
- Coordinates
- 37.95754, -121.85921
- Reference number
- 91001425
Slide toward Today to fade the historical sheet and see the modern map underneath.
The outline is the area recorded for this listing in National Park Service map data, drawn approximately.
David Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesUSGS Historical Topographic Map CollectionDavid Rumsey Map Collection, Stanford LibrariesDigital Commonwealth, Boston Public Library