4. Yes, but What’s a Mineral? 1 cm Rock- a natural aggregate of minerals (and/or mineraloids)
5. - a naturally occurring, inorganic, crystalline solid with a definite chemical composition and characteristic physical properties e.g., quartz, diamond, graphite, talc Mineral
6.
7. What is a crystalline solid? Are any inorganic solids not crystalline? Glass
8. How do we know a material is crystalline? Self-Similarity Halite Quartz
9. How do we know a material is crystalline? X-ray diffraction
16. How do Minerals Form? - Cooling from liquid (magma) to a solid
17. How do Minerals Form? - Evaporation of a briny liquid - Cooling from liquid (magma) to a solid
18. How do Minerals Form? - Precipitation from a fluid Section of a pipe Mineralized vein - Evaporation of a briny liquid - Cooling from liquid (magma) to a solid
19. Asbestos- fibrous silicate mineral w/ fireproofing qualities Ceiling tiles
20. Asbestos- commercial term, not a geological term Chrysotile- sheet structure no sharp fibres- no hazard Crocidolite- chain structure sharp fibres- BIG hazard The Cost- 50 to 150 billion $ to clean it all up >half of the asbestos is harmless Chrysotile What to Do?