rockhounding
North Dakota
7 researched sites3 legal to collect
Cannonball concretions, Grant CountyMineral locality · Permission required
›Hell Creek Fossil Country, near MarmarthFossil site · Permission required
›Knife River Flint, Dunn CountyMineral locality · Gray area
›Lake Sakakawea petrified wood shoresFossil site · Gray area
›Little Missouri National Grassland Petrified WoodFossil site · Legal to collect
›Pembina Gorge public fossil digFossil site · Licence or permit
›Pioneer Trails museum digs, BowmanFossil site · Licence or permit
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