The deposit is actually UNDER the ground. That's why you can't home on it and keep spinning in circles.
I found one that was "Unknown size" to me.. Still unskilled, but found Extremely Large and Huge deposits that detected correctly. I would assume the deposit is so big that I can not comprehend it with my skills
It INSIDE a rock and you can't even get closer than 6m to trigger the claim. Climb on top .. around ... nothing. Even if I could trigger the claim I could not extract it because I would not be able to see the rod.
Anyways.. wrote a support case.. Mentioned that it seemed large and should be available to the community if I can't claim it... They simply showed me the middle finger.