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Dominant species
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Flint
Pumice
Porphyry
Picrite
Phonolite
Peridotite
Pegmatite
Obsidian
Norite
Chalk
Monzonite
Rhomb-porphyry
Gypsum
Dolomite
Diatomite
Diamictite
Coquina
Conglomerate
Coal
Chert
Nepheline
Trachyte
Anthracite
Amphibolite
Shungite
Skarn
Slate
Soapstone
Suevite
Tuff
Pyroxenite
Troctolite
Rapakivi
Trachyandesite
Tonalite
Tephrite


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