Many people do not know there are many states
that have a state rock. Here are states that do.
Serpentine California
Geode Iowa
Bauxite Arkansas
Slate Vermont
Thunder egg Oregon
Red granite Wisconsin
Agate Kentucky, Nebraska
Limestone Tennessee
Petoskey stone Michigan
Cumberlandite Rhode Island
Barite rose Oklahoma
Mozarkite Missouri
Roxbury puddingstone, Massachusetts
Marble Alabama, Colorado, Vermont
Coal Utah, West Virginia
Sandstone Nevada
Granite New Hampshire, North Carolina, Vermont