Mystery Mineral

Mystery Mineral Years ago, my family and I went to a local fossil and mineral store. I frequent this store every month and buy a couple minerals and fossils each time, as they have new items every time I go. This store has many different attractions. One of which was a "Gold Dig", where you panned for small pieces of Pyrite, and another which was a "mine your own minerals" activity where you sift through sand/gravel to find different minerals such as Quartz, Calcite, Fluorites, Agates, and an assortment of different tumbled stones. I've held onto these minerals for a couple years, and a few months back I decided to look at the mineral dust that collected at the bottom of the plastic bucket under a microscope. One peculiar mineral I discovered at the bottom was this. Sorry for the low quality, this photo was taken on my phone through my microscope. Since I took the pho...