>>1197213I used to do ceramics and worked with a lot of refined raw materials. I could ID quite a few of them. The issue is finding an area that's had volcanic activity and major erosion or upheavals to make the elements available to you to refine. Brilliant aquamarine and green is almost always a sign of copper, deep blacks are iron or bright yellows are sulphur or another form of iron, rust red is iron, poop green algae is another source of iron...
I love geology and wish I had studied it
