Pyrite structure - Revision history

Apm at 10:45, 28 June 2021

2021-06-28T10:45:03Z

← Older revision		Revision as of 12:45, 28 June 2021
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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.

Apm: fixed error in formulas

2021-06-27T21:45:02Z

fixed error in formulas

← Older revision		Revision as of 23:45, 27 June 2021
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	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.

	* '''Fe<sub>2</sub>S''' [https://en.wikipedia.org/wiki/Pyrite Pyrite] - 5.0g/ccm - Mohs 6 to 6.5 - optically metallic, electrically conductive, mechanically nonmetallic		* '''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
	* '''Ni<sub>2</sub>S''' [https://en.wikipedia.org/wiki/Vaesite Vaesite] - Mohs 4.5 to 5.5 (6.25?) - optically not metallic [[not transparent]]		* '''NiS<sub>2</sub>''' [https://en.wikipedia.org/wiki/Vaesite Vaesite] - Mohs 4.5 to 5.5 (6.25?) - optically not metallic [[not transparent]]
	----		----
	* Mn<sub>2</sub>S [https://en.wikipedia.org/wiki/Hauerite Hauerite] - 3.46g/ccm - Mohs 4 - 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]]
	* Cu<sub>2</sub>S [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?		* 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?
	* Co<sub>2</sub>S [https://en.wikipedia.org/wiki/Cattierite Cattiereite] - 4.82g/ccm - Mohs 4 - 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]]

Apm: added * Simple crystal structures of especial interest

2021-04-25T07:37:48Z

added * Simple crystal structures of especial interest

← Older revision		Revision as of 09:37, 25 April 2021
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	* Cu<sub>2</sub>S [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?		* Cu<sub>2</sub>S [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?
	* Co<sub>2</sub>S [https://en.wikipedia.org/wiki/Cattierite Cattiereite] - 4.82g/ccm - Mohs 4 - optically metallic		* Co<sub>2</sub>S [https://en.wikipedia.org/wiki/Cattierite Cattiereite] - 4.82g/ccm - Mohs 4 - optically metallic

			== Related ==

			* [[Simple crystal structures of especial interest]]

Apm: some basic compounds

2021-04-25T07:37:08Z

some basic compounds

New page

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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.

* '''Fe2S''' [https://en.wikipedia.org/wiki/Pyrite Pyrite] - 5.0g/ccm - Mohs 6 to 6.5 - optically metallic, electrically conductive, mechanically nonmetallic
* '''Ni2S''' [https://en.wikipedia.org/wiki/Vaesite Vaesite] - Mohs 4.5 to 5.5 (6.25?) - optically not metallic [[not transparent]]
----
* Mn2S [https://en.wikipedia.org/wiki/Hauerite Hauerite] - 3.46g/ccm - Mohs 4 - optically not metallic [[not transparent]]
* Cu2S [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?
* Co2S [https://en.wikipedia.org/wiki/Cattierite Cattiereite] - 4.82g/ccm - Mohs 4 - optically metallic