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.
Report Abuse. Color and density of igneous rock depend on its mineral composition. Felsic (light-colored and low-density) igneous rocks include large proportions of quartz and feldspar. Mafic (dark and dense) igneous rocks incorporate minerals containing iron and magnesium.Ultramafic igneous rocks contain iron-and magnesium-bearing minerals that can form only under deep subterranean pressures, with relatively little silica. http://home.att.net/~cochrans/ignrok01.h...afic (dark and dense) igneous rocks incorporate minerals containing iron and magnesium. Ultramafic igneous rocks contain iron-and magnesium-bearing minerals that can form only under deep subterranean pressures, with relatively little silica. http://home.att.net/~cochrans/ignrok01.h...