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Rocks and Minerals crossword

Clues across and down, at three difficulties, and it prints with the answer key.

Rocks and Minerals1234567891011121314

Across

  • 1 Ancient remains preserved in stone
  • 4 Glassy black rock from cooled lava
  • 7 Rock made of shells and coral, dissolved into caves
  • 9 Gray rock that splits into flat roofing sheets
  • 11 Frothy volcanic rock light enough to float
  • 12 Speckled rock popular for kitchen countertops
  • 13 Stone favored by sculptors of statues
  • 14 Mineral that peels into thin shiny sheets

Down

  • 2 Layered rock formed from cemented grains
  • 3 Dark volcanic rock of ocean floors
  • 5 Scientist who studies the Earth and its layers
  • 6 Most abundant mineral group in Earth's crust
  • 8 Plain ball that hides crystals inside
  • 10 Hard clear crystal used in watches
  • 12 Soft mineral used to make wallboard
  • 13 Molten rock still underground

Print the page above, or take the easy grid as a PDF. Both carry the answer key, and large print is a setting rather than a separate file.

Show the answer key
Rocks and Minerals1FOS2SILA3BNA4OBSIDIANSSA5GT6F7LIMESTONE8GTONLE9SLATEDO10QOSDUG11PUMICE12GRANITEAYRS13MARBLEPTTASZGU14MICAMA
  1. 1 across: FOSSIL. Ancient remains preserved in stone
  2. 2 down: SANDSTONE. Layered rock formed from cemented grains
  3. 3 down: BASALT. Dark volcanic rock of ocean floors
  4. 4 across: OBSIDIAN. Glassy black rock from cooled lava
  5. 5 down: GEOLOGIST. Scientist who studies the Earth and its layers
  6. 6 down: FELDSPAR. Most abundant mineral group in Earth's crust
  7. 7 across: LIMESTONE. Rock made of shells and coral, dissolved into caves
  8. 8 down: GEODE. Plain ball that hides crystals inside
  9. 9 across: SLATE. Gray rock that splits into flat roofing sheets
  10. 10 down: QUARTZ. Hard clear crystal used in watches
  11. 11 across: PUMICE. Frothy volcanic rock light enough to float
  12. 12 across: GRANITE. Speckled rock popular for kitchen countertops
  13. 12 down: GYPSUM. Soft mineral used to make wallboard
  14. 13 across: MARBLE. Stone favored by sculptors of statues
  15. 13 down: MAGMA. Molten rock still underground
  16. 14 across: MICA. Mineral that peels into thin shiny sheets
Rocks and Minerals1234567891011121314

Across

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

Down

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

Print the page above, or take the medium grid as a PDF. Both carry the answer key, and large print is a setting rather than a separate file.

Show the answer key
Rocks and Minerals1BAS2SLATE3FALO4GRANITESDS5OBSIDIANI6GT7LIMESTONEONL8GEODEOGI9M10FELDSPARTR11GBYL12PUMICESU13MAG14MAICA
  1. 1 down: BASALT. Dark volcanic rock of ocean floors
  2. 2 across: SLATE. Gray rock that splits into flat roofing sheets
  3. 2 down: SANDSTONE. Layered rock formed from cemented grains
  4. 3 down: FOSSIL. Ancient remains preserved in stone
  5. 4 across: GRANITE. Speckled rock popular for kitchen countertops
  6. 5 across: OBSIDIAN. Glassy black rock from cooled lava
  7. 6 down: GEOLOGIST. Scientist who studies the Earth and its layers
  8. 7 across: LIMESTONE. Rock made of shells and coral, dissolved into caves
  9. 8 across: GEODE. Plain ball that hides crystals inside
  10. 9 down: MARBLE. Stone favored by sculptors of statues
  11. 10 across: FELDSPAR. Most abundant mineral group in Earth's crust
  12. 11 down: GYPSUM. Soft mineral used to make wallboard
  13. 12 across: PUMICE. Frothy volcanic rock light enough to float
  14. 13 across: MAGMA. Molten rock still underground
  15. 14 down: MICA. Mineral that peels into thin shiny sheets
Rocks and Minerals123456789101112131415

Across

  • 2 Gray rock that splits into flat roofing sheets
  • 4 Hard clear crystal used in watches
  • 5 Soft mineral used to make wallboard
  • 8 Glassy black rock from cooled lava
  • 9 Stone favored by sculptors of statues
  • 11 Rock made of shells and coral, dissolved into caves
  • 12 Plain ball that hides crystals inside
  • 13 Speckled rock popular for kitchen countertops
  • 14 Most abundant mineral group in Earth's crust
  • 15 Mineral that peels into thin shiny sheets

Down

  • 1 Dark volcanic rock of ocean floors
  • 3 Layered rock formed from cemented grains
  • 6 Frothy volcanic rock light enough to float
  • 7 Scientist who studies the Earth and its layers
  • 10 Molten rock still underground
  • 14 Ancient remains preserved in stone

Print the page above, or take the hard grid as a PDF. Both carry the answer key, and large print is a setting rather than a separate file.

Show the answer key
Rocks and Minerals1B2SLATESA3SL4QUARTZ5GY6PSUMNU7G8OBSIDIAN9MARBLES10MIOTAC11LIMESTONE12GEODEONM13GRANITEAI14FELDSPAROTSS15MICAL
  1. 1 down: BASALT. Dark volcanic rock of ocean floors
  2. 2 across: SLATE. Gray rock that splits into flat roofing sheets
  3. 3 down: SANDSTONE. Layered rock formed from cemented grains
  4. 4 across: QUARTZ. Hard clear crystal used in watches
  5. 5 across: GYPSUM. Soft mineral used to make wallboard
  6. 6 down: PUMICE. Frothy volcanic rock light enough to float
  7. 7 down: GEOLOGIST. Scientist who studies the Earth and its layers
  8. 8 across: OBSIDIAN. Glassy black rock from cooled lava
  9. 9 across: MARBLE. Stone favored by sculptors of statues
  10. 10 down: MAGMA. Molten rock still underground
  11. 11 across: LIMESTONE. Rock made of shells and coral, dissolved into caves
  12. 12 across: GEODE. Plain ball that hides crystals inside
  13. 13 across: GRANITE. Speckled rock popular for kitchen countertops
  14. 14 across: FELDSPAR. Most abundant mineral group in Earth's crust
  15. 14 down: FOSSIL. Ancient remains preserved in stone
  16. 15 across: MICA. Mineral that peels into thin shiny sheets

About Rocks and Minerals

Rocks fall into three families: igneous rock cooled from magma, sedimentary rock built from packed grains and shells, and metamorphic rock reshaped by heat and pressure. This crossword moves among all three. Obsidian is volcanic glass that cools too fast to form crystals, while pumice traps so much gas it can float on water. Limestone often holds fossils; under pressure it becomes marble. Quartz, feldspar and mica are the three minerals you see speckling a slab of granite.

Reach for this during an earth science unit on the rock cycle, or after a trip to a quarry, cave or museum mineral hall.

What is in this crossword

A 15 by 17 crossword with 8 across and 8 down, on the subject of Rocks and Minerals.

Grid
15 x 17
Across
8
Down
8
Longest answer
SANDSTONE (9 letters)

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