I enjoy the study and collection of rocks and mineral specimens, I guess you could call me an amateur geologist 
That is a cool hobby that I dont hear much about. 
Well it has actually risen in popularity, one of the reasons is you can begin by simply picking up rocks.
That is really cool. Where can I learn more about rock collecting?
There are many groups that search for specimens and compare them together as a hobby, I'm sure you can find meet-ups locally.