Hi, i want know what is that weird yeallow cristal/flakes. I dissolved stone in hcl, naocl and h2o2 then drop that weird yeallow flakes. at first I thought is mica but i mean that mica cant drop after adding oxidizing agent. i want know what that may be. it is not souble in hcl and water and solution color is yeallow brown or green. that the same yeallow cristal in red solution have potassium bromide