Lithium is a medication that works in the brain to treat bipolar disorder. It is approved for the treatment of bipolar disorder and acute mania. Bipolar disorder involves episodes of depression and/or mania.ithium is a medication that works in the brain to treat bipolar disorder. It is approved for the treatment of bipolar disorder and acute mania. Bipolar disorder involves episodes of depression and/or mania.
Examples of gemstones that are found within igneous rocks as a secondary deposit include amethyst, larimar, and fire opal. Metamorphic Rocks Metamorphic rocks form when existing rocks are subjected to intense pressure and/or temperature increases that lead to the alteration of the rocks mineralogical composition, texture, and structure.
1 Aphanitic igneous rocks have a fine-grained texture and most of their crystals are too small to see with the naked eye. 2  You will need to use a magnifying glass to observe the crystals in aphanitic rocks. 3  Igneous rocks that form too quickly for crystals to form have what is called a glassy texture. An example of an intrusive rock is granite. 2  When magma is above the earth's crust, it is known as lava. 3  Extrusive rocks form through very fast cooling of lava above the Earth's surface. 4  Extrusive rocks have very small, almost microscopic crystals.