I attempted to check this claim out yesterday and I'm 95% sure I was in the right place (I didn't have a GPS).  I found a claim marker, right were the book said it was located, but the information on the claim marker didn't match what was in the mining guide.  Is there a way to find out if this is still an active claim?  The claim number on the Marker was ORMC 169223.

It is possible I was in the wrong place, but the mining guide had it down to a tee.  It wasn't super easy to find, but I didn't have to try too hard, so I was surprised when I found a different claim number.  So, I didn't get to play in the dirt, after all!