Untreated, an episode of mania can last anywhere from a few days to several months. Most commonly, symptoms continue for a few weeks to a few months. Depression may follow shortly after, or not appear for weeks or months. Many people with bipolar I disorder experience long periods without symptoms in between episodes. A minority has rapid-cycling symptoms of mania and depression, in which they may have distinct periods of mania or depression four or more times within a year.
Gypsum rocks are sedimentary rocks made up of sulfate mineral and formed as the result of evaporating sea water in massive prehistoric basins. This rock is found in many parts â¦ of the world. Gypsum deposits lie in flat beds of about six to eight feet in thickness, and are often inter-layered with limestone or shale.
Gneiss and schist are the most common metamorphic rock. Gneiss is a  foliated rock usually composed of quartzand feldspar. Schist is  also foliated, but its minera compositi â¦ on varies.o. Gneiss is a high-grade metamorphic rock. Even if the gneiss  formed from what was originally a fossil-containing rock, the  metamorphism will have destroyed the fossils.