SnowProspector

Thanks! I have been thinking(hoping) that it could be some more exotic metal. There is a Company that renta out XRD gun where I live. I will Contact them for a quoate. -E

Thanks guys! That is interesting! So we have sulfides that appears as metal and others dont make a sound. Will arsenopyrite get above your Iron discrimination too? I did not expect sulfides to do be classified as +-80 (gold/Silver). I came across a piece of basalt that gave a loud and clear signal but not a number on the metal indicator. How to you go about classifying mineral? Microscope? Send in a sample? What does it cost? Rent an xrd tester? -E

I came across some rustbrown colored mica schist and decided to scan it with my Garret At gold with a double D coil. I'm im all metal mode, ground balanced and the detector starts to give me a lot of targets with 60-80 on the scale(thick gold/precious metal). Iron is below 30-50. I hammered out the rock that was giving me the high reading and it turns ut there is thick layers of some dissiminated metallic (?) layer in the schist. Is have had a closer look and it does not look like pyrite because it is quite dark gray, but still has the metallic shine. It is brittle, so not sure if it is metall or sulfide. I heard several people say that sulfides do not give a reading on a metal detector. To confirm that i have testes a big chalcopyrite that gives absolutley no noise on the detector. I also have a 14 lb chunk of stibnite that also gives no sound at all. Then this wierd rock gives a strong 80 gold/Silver Reading. Have anyone had sulfides make a strong reading? I added pictures of the metal/sulfide that i hammere out. What do you think?