When I first started Dowsing and using Elements to signal with. I carried a single Diamond in a little jar with me. That was my Carbon signal. Here's a pic of my cut diamond, along with some dust/chips I use now along with it. I drove from Stanton over towards the Hassayampa river to long distant dowse, with longer rods. I was dowsing towards the East across the river. I had one Gold target making a line back to my Gold signal. Not expecting any Carbon target to be within reach, I checked anyhow. Yes, my Diamond had signalled a target. Surprisingly it was over near the Gold target from what I could tell. It was 2 weeks before I made it up Constellation road east of the Hassayampa. It was a normal Sunny hot day, and the track was only about 100 yds from the targets. I first went to the Gold target ending up over what I believe was plutonic rock. Not seeing anything on top, I figured an ore vein below. When I dowsed my Diamond, the target was on the adjacent hill, about 50 yds away. It wasn't until I got close that I could see a dark black ore vein 4 inches thick, about 10ft long running horizontal on the hill. At closer inspection I could see it was loaded with mica, i thought. The vein was real hard, and i had to pick up a loose peice. It was the most sparkling pitch black rock I ever saw. At home in the rock book, the closest I could get was mica schist. I never took a close look at it, thought it was mica. I wish I had some more, because I can't find a real match on line. If it was schist, it would be flaking, which this was not, plus I don't remember the mica coming off in my hands.. Part of the reason that I thought it was mica schist is because, Graphite is in it. That seemed to explain the black, and Carbon signal hitting on it. I lost the spot and would like to eventually return. There is some mineral claims in the area. If I could find it on Google earth, I could check for claim ability. If anyone sees a Carbon/Diamond/Graphite target east of the river mark it up. Thanks