Rocks and minerals crossword puzzles covering igneous, sedimentary, and metamorphic rocks.
Crossword clues used in rocks and minerals puzzles, with answers and links to play.
“Rock type changed by intense heat and pressure”
METAMORPHIC (11)
“How shiny or dull a mineral's surface appears”
LUSTER (6)
“Gradual wearing away of rock by wind or water”
EROSION (7)
“Rock type formed when magma or lava cools and hardens”
IGNEOUS (7)
“Smooth, glassy black rock formed from quickly cooled lava”
OBSIDIAN (8)
“Measure of how well a mineral resists being scratched”
HARDNESS (8)
“Small particles of rock, sand, or soil that settle and build up”
SEDIMENT (8)
“Breaking down of rock into smaller pieces over time”
WEATHERING (10)
“Sedimentary rock often formed from shells and coral”
LIMESTONE (9)
“Way a mineral breaks when it does not split evenly”
FRACTURE (8)
“Distinct layers of rock stacked on top of each other”
STRATA (6)
“Color of the powder a mineral leaves when scratched on tile”
STREAK (6)
“Dark, fine-grained igneous rock formed from cooled lava”
BASALT (6)
“Naturally occurring solid with a specific chemical makeup”
MINERAL (7)
“Rock type formed from compressed layers of sand, mud, and shells”
SEDIMENTARY (11)
“Hot melted rock that flows out of a volcano”
LAVA (4)
“Tiny grains of worn-down rock”
SAND (4)
“Preserved remains of an ancient plant or animal”
FOSSIL (6)
“Natural non-living solid found in the earth”
MINERAL (7)
“Solid natural material made of minerals”
ROCK (4)
“Dark rock formed from ancient buried plants, burned as fuel”
COAL (4)
“Common, hard, glassy mineral found in many rocks”
QUARTZ (6)
“One flat sheet of material stacked with others”
LAYER (5)
“Very large rounded rock”
BOULDER (7)
“Soft, sticky earth used to make pottery”
CLAY (4)
“Mountain that can erupt with lava and ash”
VOLCANO (7)
“Melted rock found beneath Earth's surface”
MAGMA (5)
“Smooth rock often used for statues and buildings”
MARBLE (6)