From the tourmaline of Maine to the black coral of Hawaii, our state's official geological symbols or geosymbols are as uniquely diverse as the terrain and character of the 50 states themselves. In this reference book over 150 state geosymbols are presented with informative text that highlights their adoptive legislation, geologic and social history. Color photo montages add visual interest to the pages. | State Geosymbols by Alan McPherson, Paperback | Indigo Chapters