Rocks and Minerals crossword
Tap a square and type. Tap it again to switch direction.
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
About this puzzle
A 13 by 26 crossword with 8 across and 7 down, on the subject of Rocks and Minerals.
- Grid
- 13 x 26
- Across
- 8
- Down
- 7
- Longest answer
- SANDSTONE (9 letters)
Show the answer key
- 1 down: BASALT. Dark volcanic rock of ocean floors
- 2 across: SLATE. Gray rock that splits into flat roofing sheets
- 2 down: SANDSTONE. Layered rock formed from cemented grains
- 3 down: FOSSIL. Ancient remains preserved in stone
- 4 across: GRANITE. Speckled rock popular for kitchen countertops
- 5 across: OBSIDIAN. Glassy black rock from cooled lava
- 6 down: GEOLOGIST. Scientist who studies the Earth and its layers
- 7 across: LIMESTONE. Rock made of shells and coral, dissolved into caves
- 8 across: GEODE. Plain ball that hides crystals inside
- 9 down: MARBLE. Stone favored by sculptors of statues
- 10 across: FELDSPAR. Most abundant mineral group in Earth's crust
- 11 down: GYPSUM. Soft mineral used to make wallboard
- 12 across: PUMICE. Frothy volcanic rock light enough to float
- 13 across: MAGMA. Molten rock still underground
- 14 down: MICA. Mineral that peels into thin shiny sheets
Questions
- How many clues does this Rocks and Minerals crossword have?
- 8 across and 7 down, on a 13 x 26 grid. The longest answer is SANDSTONE (9 letters).
- How do I switch between across and down?
- Tap a square to type into it, and tap the same square again to turn the corner. The answer you are filling is shaded on the grid and its clue lights up in the list, so you always know which one you are on.
- Will it tell me when a letter is wrong?
- Only when you ask. Press Check letters and any wrong letter is marked. A crossword is solved by reasoning across two answers at once, and flagging a letter the moment it is typed takes that away.
- Can I print this crossword?
- Yes. The printable version carries the same grid and clues with the answer key, at three difficulties.
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