JustaConfusedPerson JustaConfusedPerson 18-10-2016 Geography contestada Which of the following are metamorphic rocks? 1. Anthracite 2. Basalt 3. Bauxite 4. Conglomerate 5. Gneiss 6. Limestone 7. Marble 8. Obsidian 9. Sandstone 10. Slate Please help me!.!