CrosswordMint
Geological Wonders and Onix Insights
Moderate difficulty suitable for most players
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Across
  • 1. The way a mineral reflects light, a key identification trait
  • 3. Solid material whose atoms are arranged in a repeating pattern
  • 6. Sedimentary rock mainly composed of calcium carbonate
  • 7. A banded variety of chalcedony, often black or white
  • 11. Precious or semi-precious mineral used in jewelry
  • 13. Process of surface being worn away by natural forces
  • 14. Hollow rock lined with crystals inside
  • 17. Preserved remains of ancient organisms in rock
  • 19. Softest mineral on the Mohs hardness scale
Down
  • 2. Common crystalline mineral found in many types of stones
  • 4. Hollow space within a rock or mineral formation
  • 5. Microcrystalline quartz, usually opaque and translucent varieties
  • 8. Layer of rock or soil with internally consistent characteristics
  • 9. Extrusive igneous rock, often light in color and fine-grained
  • 10. Dark, fine-grained volcanic rock commonly found in ocean crust
  • 12. Characteristic of how a mineral breaks apart
  • 15. Naturally occurring inorganic solid with a defined chemical composition
  • 16. Particles deposited by water, wind, or ice forming layers
  • 18. A mineral composed of calcium magnesium carbonate
  • 20. Fine-grained chalcedony characterized by color bands

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