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Rocks and Minerals crossword

Rocks and Minerals1234567891011121314
Tap a square and type. Tap it again to switch direction.

Across

  1. 2 Gray rock that splits into flat roofing sheets
  2. 4 Speckled rock popular for kitchen countertops
  3. 5 Glassy black rock from cooled lava
  4. 7 Rock made of shells and coral, dissolved into caves
  5. 8 Plain ball that hides crystals inside
  6. 10 Most abundant mineral group in Earth's crust
  7. 12 Frothy volcanic rock light enough to float
  8. 13 Molten rock still underground

Down

  1. 1 Dark volcanic rock of ocean floors
  2. 2 Layered rock formed from cemented grains
  3. 3 Ancient remains preserved in stone
  4. 6 Scientist who studies the Earth and its layers
  5. 9 Stone favored by sculptors of statues
  6. 11 Soft mineral used to make wallboard
  7. 14 Mineral that peels into thin shiny sheets
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