List: Geological rock types

List: Geological rock types
Clue: A metamorphic rock composed primarily of amphibole(A rock type - Geology)
Answer: Amphibolite

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Clue: An igneous ultramafic rock composed predominantly of plagioclase(A rock type - Geology)
Answer: Anorthosite

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Clue: A very fine grained intrusive igneous rock(A rock type - Geology)
Answer: Aplite

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Clue: A sedimentary rock similar to sandstone(A rock type - Geology)
Answer: Arkose

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Clue: A fine grained chemical sedimentary rock composed of iron oxide minerals(A rock type - Geology)
Answer: Banded iron formation

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Clue: A volcanic rock of mafic composition(A rock type - Geology)
Answer: Basalt

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Clue: A class of basaltic rocks containing relatively small amounts of the tbread elements yttrium and ytterbium(A rock type - Geology)
Answer: Adakite

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Clue: A class of basalts formed from Ocean Island (hot spot) magmatism(A rock type - Geology)
Answer: Hawaiite

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Clue: A metamorphic rock composed of sodic amphiboles with a distinct blue colour(A rock type - Geology)
Answer: Blueschist

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Clue: A sedimentary or tectonic rock composed of fragments of other, broken rocks(A rock type - Geology)
Answer: Breccia

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Clue: A rare igneous rock composed of >50% carbonate minerals(A rock type - Geology)
Answer: Carbonatite

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Clue: A rock formed by faulting(A rock type - Geology)
Answer: Cataclasite

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