Across
- 4. starts as magma, extrusive and intrusive formations
- 8. when a mineral may act like a magnet
- 9. formed by heat and pressure
- 10. how a mineral reflects light
- 12. when minerals have a defined pattern on how they grow
- 14. when a mineral fizzes when put into weak acid
- 16. the color left behind when scratched on a porcelain plate
- 17. a non reliable test for mineral identification
- 18. clastic, chemical & inorganic, formed by cementation & compaction
Down
- 1. how easy/difficult it is to scratch a mineral
- 2. minerals that break along an even plane or smooth surface
- 3. when a mineral glows under a UV light
- 5. minerals that break along uneven lines or chip into irregular pieces
- 6. igneous rock, used by Native Americans for tools
- 7. how light or heavy a mineral sample is
- 11. look & feel of a rock's surface
- 13. sedimentary rock, used for building
- 15. metamorphic rock, used by architects and sculptors