malachite, probably my favorite mineral.
Image from Wikipedia.
This quarter I am taking two classes, and they are both reading and thinking intensive, plus homework. So, after a few more minerals, I might do something really simple, like numbers, except with numbers, I’d want to talk about variant forms and symbology (such as it is). So, any suggestions? I could do metals and maybe other chemicals and bring you interesting wikipedia pics, or landscape terms, or ???