Collection place: Concord, Contra Costa County, California / Materials: Basalt (basic igneous rock) - Hearst Museum Portal Search Results

Start Over Collection place Concord, Contra Costa County, California Materials Basalt (basic igneous rock)

1. Hammerstone

Museum number:: 1-62039
Object class:: Hammerstones
Dimensions:: diameter 75 millimeters
Collector:: Ernest N. Johnson
Collection place:: CA-CCo-250, Concord, Contra Costa County
Collection date:: 1936-1937

2. Hammerstone

Museum number:: 1-62040
Object class:: Hammerstones
Dimensions:: diameter 90 millimeters
Collector:: Ernest N. Johnson
Collection place:: CA-CCo-250, Concord, Contra Costa County
Collection date:: 1936-1937