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.
Minerals that are not pure elements are made of compounds. For example, the mineral quartz is made of the compound silicon dioxide, or SiO 2. This compound has one atom of the element silicon for every two atoms of the element oxygen.When a mineral has a different chemical formula, it is a different mineral.or example, the mineral hematite has two iron atoms for every three oxygen atoms, while the mineral magnetite has three iron atoms for every four oxygen atoms. Many minerals contain more complex chemical compounds that are made of several elements.