Listen up assholes, I am indeed new to this game and that is exactly WHY I'm more qualified to point out what parts of it are in need of improvement then the rest of you as I can see things with fresh unbiased eyes. Anyone who thinks the present prospecting system is intuitive or easy to understand has been playing for WAY too long, their is no way a person can do it without consulting the wiki and or forums. I've prospected once with a friend before and our single Rust Root extract didn't find any minerals but we knew what we were doing via the wiki pages and so all this dismissive "Play the game for as long as I have before daring to make a suggestion" is a bunch of bullshit as I've both read and done everything short of finding my own mine. Game mechanics can be evaluated quite well on simply a written description of how they work, any intelligent person can see that the current prospecting system sucks simply from reading the wiki description alone, as it makes the player jump through hoops that are not obvious when in game.
If prospecting was dependent on the presence of rocks, and the area checked was so small, the vast majority of available mines would go undiscovered.
Rocks are not that rare and in any case I specifically allow for their creation any ware their needed so every tile is ultimately open to prospecting.