Difference between revisions of "Pyrite structure"
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| − | A lightly nontrivial cubic structure. <br> | + | A lightly nontrivial '''cubic''' structure. <br> |
Seems none of these are are very hard, <br> | Seems none of these are are very hard, <br> | ||
but the harder ones with common elements are are not "uselessly" weak and soft for structural applications either. | but the harder ones with common elements are are not "uselessly" weak and soft for structural applications either. | ||
| − | * ''' | + | * '''FeS<sub>2</sub>''' [https://en.wikipedia.org/wiki/Pyrite Pyrite] - 5.0g/ccm - Mohs 6 to 6.5 - optically metallic, electrically conductive, mechanically nonmetallic |
| − | * ''' | + | * '''NiS<sub>2</sub>''' [https://en.wikipedia.org/wiki/Vaesite Vaesite] - Mohs 4.5 to 5.5 (6.25?) - optically not metallic [[not transparent]] |
---- | ---- | ||
| − | * | + | * MnS<sub>2</sub> [https://en.wikipedia.org/wiki/Hauerite Hauerite] - 3.46g/ccm - Mohs 4 - optically not metallic [[not transparent]] |
| − | * | + | * CuS<sub>2</sub> [https://en.wikipedia.org/wiki/Villaman%C3%ADnite Villamanínite] ([https://en.wikipedia.org/wiki/Copper_sulfide copper_sulfide]) - 4.5g/ccm - Mohs 4.75 - maybe optically metallic? |
| − | * | + | * CoS<sub>2</sub> [https://en.wikipedia.org/wiki/Cattierite Cattiereite] - 4.82g/ccm - Mohs 4 - optically metallic |
== Related == | == Related == | ||
* [[Simple crystal structures of especial interest]] | * [[Simple crystal structures of especial interest]] | ||
Latest revision as of 11:45, 28 June 2021
A lightly nontrivial cubic structure.
Seems none of these are are very hard,
but the harder ones with common elements are are not "uselessly" weak and soft for structural applications either.
- FeS2 Pyrite - 5.0g/ccm - Mohs 6 to 6.5 - optically metallic, electrically conductive, mechanically nonmetallic
- NiS2 Vaesite - Mohs 4.5 to 5.5 (6.25?) - optically not metallic not transparent
- MnS2 Hauerite - 3.46g/ccm - Mohs 4 - optically not metallic not transparent
- CuS2 Villamanínite (copper_sulfide) - 4.5g/ccm - Mohs 4.75 - maybe optically metallic?
- CoS2 Cattiereite - 4.82g/ccm - Mohs 4 - optically metallic
