Someone came to me and showed me some rocks, he asked me what is this rock? then I photograph, then I search on the internet, I see there are almost the same photo. His name is Galena. anyone knows what this is and is there any benefit?
Someone came to me and showed me some rocks, he asked me what is this rock? then I photograph, then I search on the internet, I see there are almost the same photo. His name is Galena. anyone knows what this is and is there any benefit?