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Across 2. How light is reflected from a mineral's surface 5. The name of the hardness scale 8. The resistance of a mineral to scratching 10. A solid in which the atoms are arranged in a pattern that repeats again and again 11. The number ranking of the softest mineral 13. The property of a mineral breaking with one or more smooth surfaces 15. A mineral composed of only one type of chemical 17. The amount of matter in an object in a given volume 19. When two liquids mix and produce a solid substance 20. A mineral deposit that can be mined profitably 21. The property of a mineral breaking with no smooth surfaces 22. A type of mining also known as Shaft mining 23. Two or more metals combined

Down 1. Magma or lava cooling and solidifying into a mineral 3. The process of removing an ore from the Earth 4. A mineral that is durable, rare and has beauty 6. A type of mining also known as Open Pit mining 7. The color of a powder left behind when a mineral is rubbed against a porcelain plate 9. The number ranking of the hardest mineral 11. Term relating to once living or currently living organisms 12. Liquids changing to gas and leaving dissolved solids behind as a mineral 14. The process by which ore is melted to separate out the useful metal 16. Term relating to nonliving or never living substances 18. A naturally occuring inorganic solid with a definite chemical composition and crystal structure