An authigenic mineral or sedimentary rock deposit is one that was generated where it is found or observed. Sedimentary rock is one of the three main rock types (the others being igneous and Metamorphic rock) Can be used to characterize metamorphic minerals formed in situ during metamorphism, or to characterize sedimentary minerals formed during sedimentation (ex: by precipitation or recrystallization) instead of being transported from elsewhere by water or wind. A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific In situ (ɪn siːˈtuː is a Latin phrase meaning in the place. Metamorphism can be defined as the solid state recrystallisation of pre-existing rocks due to changes in heat and/or pressure and/or introduction of fluids i A mineral is a naturally occurring substance formed through geological processes that has a characteristic chemical composition a highly ordered atomic structure and specific Sedimentation describes the motion of Molecules in Solutions or particles in suspensions in response to an external force such as gravity Precipitation is the formation of a Solid in a Solution during a Chemical reaction. Recrystallization (see also Crystallization) is a physical process that has meanings in Chemistry, Metallurgy and Geology. Authigenic sedimentation is one of main consituents of deep sea sedimentation.

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