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Granite

tan/pink/white/black, phaneritic, intrusive, felsic

Scoria

Black/ Reddish Brown, Vesicular/Aphanitic, volcanic, intermediate

Andesite

Dark Gray with some white, aphanitic, volcanic, intermediate

Basalt

Brownish/Black, aphanitic, volcanic, mafic

Rhyolite

Grayish brown/ light gray with small black specs, aphanitic, volcanic, felsic

Obsidian

Black, Glassy, Volcanic, felsic

Pumice

White/tan, vesicular/aphanitic, Volcanic, felsic

Gabbro

black, phaneritic, intrusive, mafic

Diorite

black/gray, phanertic, intrusive intermediate

Tuff

white/tan, pyroclastic, volcanic, felsic

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