Concepts in Physics and Earth Science Rock Identification Name: Paulina Gonzalez Identify each unknown sample: Igneous: A04 - Rhyolite A05 - Basalt A08 - Tuff A10 - Diorite A15 - Porphyrite Granite A16 - Obsidian Sedimentary: A01 - Coquina A03 - Breccia A06 - Bituminous coal A07 - Lignite A09 - Sandstone Metamorphic: A01 - Quartzite A02 - Slate A03 - Gneiss A04 - Marble A06 - Schist Questions: 5.- Which of the metamorphic rocks are most likely to have formed in a contact metamorphic zone? How do you know? 6.- Which of the metamorphic rocks formed in a regional metamorphic zone? How do you know?

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