Massachusetts
State Rock: Roxbury Puddingstone
State Building and Monument Stone: Granite
State Mineral: Babingtonite
State Gem: Rhodonite
State Fossil: Dinosaur Tracks
State Explorer Rock: Dighton Rock
State Glacial Rock: Rolling Rock
State Historical Rock: Plymouth Rock
References
https://statesymbolsusa.org/states/united-states/massachusetts
Geology of Massachusetts's National Parks
Through Pictures
(at least the one's I have been to)
None yet!
National Parks visited but I have no pictures (at this time) to do a geology post
(link directs to NPS site)
Boston National Historical Park (2003)