What is List of rock types?
__NOTOC__ {{compactTOC}} ==List== Sorted by name; initial letter means [[Igneous rock|Igneous]], [[Sedimentary rock|Sedimentary]] or [[Metamorphic rock|Metamorphic]] [[Rock (geology)|rocks]]. === A === :I [[Andesite]] – an intermediate volcanic rock :M [[Anthracite]] – a form of hard coal === B === :S [[Banded iron formation]] – a fine grained chemical sedimentary rock composed of [[iron oxide]] minerals :S [[Bauxite]] – the main ore of [[aluminium]]. It is mostly [[aluminium oxide]]. :I [[Basalt]] – grey/black fine-grained rock from [[lava]] which cooled on the surface of the Earth. :S [[Blue Lias]] – a formation of rocks, part of the [[Jurassic Coast]] [[World Heritage Site]]. :S [[Breccia]] – a sedimentary or [[tectonic]] rock composed of fragments of other, broken rocks === C === :S [[Chalk]] – a fine grained [[carbonate]] rock composed mainly of [[coccolith]]s :S [[Chert]] – a fine grained chemical sedimentary rock composed of [[silica]] :S [[Clastic rock]] – composed of fragments, or ''clasts'', of pre-existing rock. :S [[Claystone]] – a sedimentary rock formed from [[clay]] :S [[Coal]] – a sedimentary rock formed from [[peat]] :S [[Concretion]] – a concretion is a rock in which a [[mineral]] cement fills the spaces between the [[sediment]] grains. :S [[Conglomerate (geology)|Conglomerate]] – a sedimentary rock composed of large rounded fragments of other rocks :S [[Coquina]] – a sedimentary [[carbonate]] rock formed by accumulation of abundant [[Animal shell|shell]] [[fossil]]s and fragments === D === :I [[Dacite]] – a [[felsic]] to intermediate [[volcanic]] rock with high iron content :S [[Diatomite]] – a sedimentary rock fromed from [[diatom]] fossils :I [[Diorite]] – a coarse grained intermediate [[plutonic]] rock :S [[Dolomite]] – a carbonate rock composed of calcium magnesium carbonate: CaMg(CO<sub>3</sub>)<sub>2</sub> :I [[Dunite]] – a rock made mostly of [[olivine]] === E === :[[Evaporite]] – a chemical sedimentary rock formed by accumulation of minerals after evaporation === F === :S