Originally posted by Bob Harris thanks so much Tamia for taking a look and commenting. This is from my rock/mineral collection of about 250 samples that I have and started when I was about 8 years old. We removed the collection from our storage shed and taking it to a grandson who is also interested in collecting. Funny that I collected these over the years but just the last couple of years have taken up the study of geology due to the areas we visit.
Lucky grandson, Bob. As for studying geology, have you read John McPhee's geo series,
Annals of the Former World? A collection of four books about the geology of the US written for laymen. He talks about many of your stomping grounds, as I recall.