9 some scientists actually consider the exosphere as part of outer space as there is such a gradual and fuzzy distinction between the density of molecules in the very upper reaches of the atmosphere and lower reaches of space
Notice that graphite, commonly seen in pencil lead, and diamonds. have the same chemical formula. Minerals with the same chemical formula but. different crystal structures are called polymorphs. These minerals have different. types of chemical bonds and, thus, different crystal forms. If a substance fails any part of this definition, it is not a mineral. For example, table sugar, an organic compound formed by biological plant activity, fits all. facets of the definition except the inorganic part.
A mineral, by definition, is. . . 1  Inorganic, which means that it is not made by a living organism. 2  A solid. 3  There is one unusual exception. 4  Native mercury is a mineral and is the only metal that is a liquid at normal temperatures.5  Has a regular crystal structure. 6  The crystal structures are described as crystal systems. Native mercury is a mineral and is the only metal that is a liquid at normal temperatures. 2  Has a regular crystal structure. 3  The crystal structures are described as crystal systems. 4  Made by nature which means minerals are not made, directly or indirectly, from human activity.