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Minerals are all around us! Minerals are defined by their 4 characteristics Gold Forms in nature Is a Solid Has a definite chemical make-up Has a crystal structure Feldspar Minerals form in nature Gypsum Every mineral can be formed in nature by processes that do not involve living organisms Gold Quartz Water evaporates Hot water cools Molten rock cools Heat and pressure cause changes Graphite Minerals are Solids Have a definite volume and rigid shape Ex: Liquid water is not a mineral, however ice is Minerals have a definite chemical makeup sodium chlorine Halite To be considered a mineral you must have a specific combination of atoms of certain elements. Types of atoms that make up a mineral are what make it unique Minerals have a crystal structure Atoms are arranged in an orderly repeating 3-D structure Every mineral has its own crystal structure Silica Halite Feldspar Activity Create a 4 door foldable describing the 4 characteristics of minerals Use pages A 43-46 and 62-63 to help you Silver