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Crossword clues

Solve these clues to fill the grid.

A hard crystalline metamorphic rock that takes a high polish
3 Across
A soft whitish calcite
4 Across
Molten rock in the earth's crust
6 Across
A composite rock made up of particles of varying size
7 Across
A cylinder of calcium carbonate hanging from the roof of a limestone cave
9 Across
A slowly moving mass of ice
12 Across
Rigid connective tissue that makes up the skeleton of vertebrates (plural)
14 Across
Mountain that erupts with lava
1 Down
Produced by the action of water
2 Down
Of or relating to ___
3 Down
To sail to the windward of
5 Down
A rock formed by the solidification of a substance
7 Down
To make hot or hotter
8 Down
Produced under conditions involving intense heat
10 Down
A hard glossy mineral consisting of silicon dioxide in crystal form
11 Down
Hard piece of stone
13 Down

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