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Mineral Hardness
Science Mineral Hardness Grade 8
| Question | Answer |
|---|---|
| 1 | Talc |
| 1.5-2 | Kaolinite |
| 2 + White Streak | Gypsum |
| 2 + Light Yellow Streak | Carnotite |
| 2-2.5 + Adamantine Luster | Cinnabar |
| 2-2.5 + Vitreous Luster | Muscovite Mica |
| 2.5 | Galena |
| 2.5-3 | Biotite Mica |
| 3 + Metallic Luster | Bornite |
| 3 + Vitreous Luster | Calcite |
| 3.5 | Chalcopyrite |
| 3.5-4 + White Streak | Dolomite |
| 3.5-4 + Brownish-White Streak | Sphalerite |
| 3.5-4 + Light Blue Streak | Azurite |
| 3.5-4 + Light Green Streak | Malachite |
| 4 | Flourite |
| 5 | Apatite |
| 5-6 | Uraninite |
| 5-6.5 | Augite |
| 5.5 + Splintery Fracture | Actinolite Amphibole |
| 5.5 + Uneven Fracture | Willemite |
| 5.5-6 | Magnetite |
| 6 + Uneven Fracture | Orthoclase Feldspar |
| 6 + Conchoidal Fracture | Edenite Amphibole |
| 6-6.5 | Plagioclase Feldspar |
| 6.5 + Vitreous Luster | Hematite |
| 6.5 + Metallic Luster | Pyrite |
| 6.5-7 | Olivine |
| 7 | Quartz |
| 8 | Topaz |
| 9 | Corundum |
| 10 | Diamond |