Originally, I had taken this specimen to my friend Jason Smith for help IDing the unknown green-yellow material in the vugs (second photo). Jason immediately spotted the tiny white crystals dotting across the top edge of the specimen and immediately IDed them as mimetite. Now that's super cool because mimetite has never been reported from Butte which is very heavily collected district!
I know my closeup photos of the tiny white crystals aren't the best but they get the general idea across how they look. There are at least 30 tiny perfect crystals and are really neat to look at under the scope. They have quite excellent terminations and hexagonal crystal shape narrowing towards their terminus. For obvious reasons, I am not saying exactly were I found them but they came from smack-dab in the middle of the Butte district.
3.8x3.2x3 cm