B Bryanb Joined Aug 28, 2014 Messages 8 Reaction score 3 Sep 4, 2014 #1 Hi picked a 3/4 football size rock from trunkey creek on the weekend. It had a large hole crevice in it which looked intresting. So broke it open today and found big black marks never seen before any one else?
Hi picked a 3/4 football size rock from trunkey creek on the weekend. It had a large hole crevice in it which looked intresting. So broke it open today and found big black marks never seen before any one else?
Prospector B Joined Sep 25, 2013 Messages 241 Reaction score 127 Sep 5, 2014 #2 As a guess some kind of oxide, maybe silver? I wish I was a geologist some days! I'm sure someone will have a better answer than mine.
As a guess some kind of oxide, maybe silver? I wish I was a geologist some days! I'm sure someone will have a better answer than mine.