I'm mining where you are, and I collect just about anything, and sell it on my carrier. It's something.Please do share how to get "a decent stone".
I've spent hours in the overlapping hotspot in D1-112 and the results have been... underwhelming, to say the least.
Takes 10-12 prospector limpets to find one surface-only stone with maybe 45% painite, 50% if I'm extremely lucky. No cores or sub-surface deposits. Not one.
And yes, I brought all the toys and followed all the tutorials to the letter.
Not saying it is not profitable. I made it from Broker to Tycoon in a matter of 5-6 hours (three different sessions), but all I could make in each session was no more than 180 tons.