Good idea! ...Everyone needs to have a good rock hammer.
I would never sell mine, but I would recommend a
Estwing. I personally think its the best hammers on the market.
Im not sure about stores in Colorado Springs, but I think Estwing does sell online.
Check out the website, If nothing else it will give you a better idea what kind you may want.
They also sell goggles for eye safety.
Hope this helps some, and good luck with all your prospecting adventures.