I have been prospecting in Colorado and here in the Black Hills, SD since about 2010. I also do metal detecting, so maybe it is a treasure-hunting thing. I mostly use metal detectors as a means to find gold. If you are interested in gold prospecting, I have several articles I have written as "How-Tos" as well as a photo album on my personal website. You can find that link in my profile.
In the process of shoveling gravel in a creek, I find some interesting rocks that I bring home with me. I love Rose Quartz. It is the South Dakota State Mineral, and it's PINK! I also hunt for the rare Fairburn Agate, which is the South Dakota State Gemstone. Maybe I have those two backward.
In the winter when creeks are frozen over or the water is about 33 degrees F, I stay indoors and do research. In the summer I am out mining gold or picking up rocks.
I just ordered my second 2-barrel rock tumbler for polishing rocks and I am learning how to do wire wrap jewelry with them. I have found that I enjoy doing this and I can do it indoors with no heavy lifting involved... until I "need" another bucket of rocks.
Here is an example of what I am doing:
Rough Stones to Jewelry