Igneous, Sedimentary, or Metamorphic?

Can you determine whether the following are igneous, sedimentary, or metamorphic rocks?

Classic Type in answers that appear in a list
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0/19
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RockType
Obsidian
Slate
Granite
Siltstone
Flint
Breccia
Basalt
Gneiss
Sandstone
Shale
Gabbro
Limestone
Soapstone
Pumice
Phyllite
Coal
Schist
Quartzite
Marble

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