Igneous rocks
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12 Terms
Tuff
Origin: extrusive
Texture: pyroclastic
Color: felsic
Cooling rate: fast
Special: white spots, tiny tiny sparkles
Porphyritic granite
Origin: intrusive
Texture: porphyritic-Phaneritic
Color: Felsic
Cooling rate: 2 rates
Special: heavy
Basalt
Origin: extrusive
Texture: Aphanitic
Color: mafic
Cooling rate: fast
Special: looks like coal
Obsidian
origin: extrusive
Texture: glassy
Color: Mafic
Cooling rate: fast
Vesicular basalt
Origin: extrusive
Texture: vesicular
Color: mafic
Cooling rate: fast
Special: bumpy
Porphyritic basalt
Origin: extrusive
Texture: porphyritic- aphanitic
Color: mafic
Cooling rate: 2 rates
Gabbro
Origin: intrusive
Texture: phaneritic
Color: mafic
Cooling rate: slow
Rhyolite
Origin: extrusive
Texture: aphanitic
Color: felsic
Cooling rate: fast
Special: tiny tiny black crystals
Granite
Origin: intrusive
Texture: phaneritc
Color: felsic
Cooling rate: slow
Special : countertop
Pumice
Origin:extrusive
Texture: glassy
Color: felsic
Cooling rate: fast
Special: dusty
Diorite
Origin: intrusive
Texture: phaneritic
Color: intermediate
Cooling rate:slow
Special : Oreo
Porphyritic-andesite
Origin: extrusive
Texture: porphyritic-aphanetic
Color- intermediate
Cooling rate: 2 rates
Special: white spots
