Rocks

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Across
  1. 2. A detrital sedimentary rock, specifically a type of sandstone containing at least 25% feldspar.
  2. 7. A metamorphic rock form characterized by banding caused by segregation of different types of rock.
  3. 8. A dark igneous rock composed of calcium plagioclase, pyroxene, and minor olivine, but no quartz.
  4. 9. Mixture of molten or semi-molten rock.
  5. 11. A hard non-foliated metamorphic rock which was originally pure quartz sandstone
  6. 13. Formed through tectonic forces or volcanism.
  7. 15. A fine-grained Sedimentary rock consisting of consolidated silt.
  8. 18. A solid mineral material forming part of the Earth's surface.
  9. 19. Study of rocks
  10. 20. A type of foliated metamorphic rock created from slate that is further metamorphosed.
  11. 21. A metamorphic rock formed by the contact between mudstone, shale, or other clay rich, rock.
  12. 24. A naturally occurring material that is broken down by processes of weathering and erosion.
  13. 27. The change of chemicals or Geologic texture
  14. 29. The transformation of a pre-existing rock.
  15. 32. A technique used to purify chemicals
  16. 34. The result of magma reaching the surface either as lava or fragmental ejecta.
  17. 36. Formed through the cooling and solidification of magma or lava.
  18. 39. A metamorphic rock typically containing muscovite, biotite, chlorite, and quartz
  19. 40. It's different from a rock, and does not have a specific chemical composition.
Down
  1. 1. A Igneous rock that is granular and phaneritic in texture.
  2. 3. Removes soil, rock, or dissolved material from one location on the Earth's crust to another location.
  3. 4. A sedimentary rock composed of mud that is a mix of flakes of clay minerals and tiny fragments.
  4. 5. The original unmetamorphosed rock from which a given metamorphic rock is formed.
  5. 6. A metamorphic rock which is largely composed of the mineral talc and thus is rich in magnesium.
  6. 10. An extremely fine-grained sedimentary rock consisting of a mixture of clay and silt-sized particles.
  7. 12. A sedimentary rock composed largely of the minerals calcite and aragonite, which are different crystal forms of calcium carbonate.
  8. 14. A metamorphic rock that has a hard compact variety of coal and has a sub metallic luster, also has the highest carbon content.
  9. 16. A metamorphic rock formed by ductile deformation of a protolith with a large shear strain.
  10. 17. The outermost solid shell of a rocky planet or natural satellite.
  11. 22. Formed by the deposition of material at the Earth's surface and within bodies of water.
  12. 23. A metamorphic rock form of limestone, typically white with colored mottling(s) or streaks.
  13. 25. A fine-grained grey, green or bluish-purple metamorphic rock easily split into smooth, flat plates.
  14. 26. A rupture in the crust of a planetary-mass object.
  15. 28. Minerals that include several closely related materials.
  16. 30. The breaking down of rocks, soil, and minerals.
  17. 31. A Igneous rock typically composed largely of plagioclase with pyroxene and olivine.
  18. 33. A dark green mineral consisting of hydrated magnesium silicate, sometimes spotted like a snake's skin
  19. 35. A sedimentary rock composed mainly of sand-sized minerals or rock grains.
  20. 37. A group of changes.
  21. 38. The remains or impression of a prehistoric plant or animal embedded in rock and preserved to petrified form.