Metallic- Shines like metal Nonmetallic- Does not look like metal Nonmetallic examples: Dull, Pearly, Silky, Waxy 1 Hardness: a measure of how easily a mineral can be scratched. Friedrich Mohs: German scientist who developed the Mohs Hardness Scale. Copy down the Mohs hardness scale!!! 2 3 Color: Is used to identify certain minerals (sulfur: bright yellow) but does not always help with other minerals. 4 Streak: color of a mineral’s powder left when scratched across an unglazed, porcelain tile. -Test this out on the streak plate 5 Cleavage: when minerals break along smooth, flat surfaces. 6 7 8 Fracture: when minerals break with rough, jagged edges. 9 Use the graduated cylinder and the balance to find the density of the two mineral samples. D=M/V remember… Quartz Density= Fluorite Density= 10 11 12
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