Perfect for beginners with simple, common vocabulary
Exotic Wonders of Earth's Geology
Moderate difficulty suitable for most players
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Across
- 1. Rare blue-green mineral often used as gemstone
- 2. Naturally perforated stone found in some river beds
- 3. Rare evaporite mineral, crystalline form of sodium chloride
- 4. Volcanic rock known for sometimes carrying diamonds
- 5. Small volcanic cones formed by steam eruptions
- 7. Sudden release of magma, ash, or gas from a volcano
- 11. Hard, fine-grained sedimentary rock made of quartz
Down
- 6. Rare mineral containing rare earth elements
- 8. A coating of tiny crystals inside a rock cavity
- 9. Precious hydrated silica known for vibrant color play
- 10. Step-like landform formed by mineral deposits at hot springs
- 12. An opening in Earth's crust where molten rock escapes
Similar Crossword Puzzles
- Moderate difficulty suitable for most players
- Moderate difficulty suitable for most players
- Moderate difficulty suitable for most players
- Moderate difficulty suitable for most players