Difference between revisions of "Simple crystal structures of especial interest"

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(factored out marcasite structure & added link to yet unwritten Perovskite structure)
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* [[Wurtzite structure]] - wurtzite ZnS, hexagonal moissanie SiC, lonsdaleite CC (hexagonal diamond), ... (same as above)  
 
* [[Wurtzite structure]] - wurtzite ZnS, hexagonal moissanie SiC, lonsdaleite CC (hexagonal diamond), ... (same as above)  
 
* See: [[Diamond like compounds]]
 
* See: [[Diamond like compounds]]
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* [[Rock salt structure]] - simple cubic - (NaCl, MgO) - See: [[Transition metal monoxides]]
 
* [[Rutile structure]] - Rutile TiO<sub>2</sub>, [[Stishovite]] SiO<sub>2</sub>, ...
 
* [[Rutile structure]] - Rutile TiO<sub>2</sub>, [[Stishovite]] SiO<sub>2</sub>, ...
* [[Corundum structure]] - [[Leukosapphire]] Al<sub>2</sub>O<sub>3</sub>, Tistarite Ti<sub>2</sub>O<sub>3</sub>,  
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* [[Hematite structure]] - [[Leukosapphire]] Al<sub>2</sub>O<sub>3</sub>, Tistarite Ti<sub>2</sub>O<sub>3</sub>,  
* [[Rock salt structure]] - (NaCl) - See: [[Transition metal monoxides]]
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* [[Marcasite structure]] - (ortorhombic with simple unit cell) - '''FeS<sub>2</sub> [https://en.wikipedia.org/wiki/Marcasite Marcasite]''' and  '''FeP<sub>2</sub> Zuktamururite'''
* [[Quartz structure]]
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* [[Perovskite structure]] - (cubic or ortorhombic near cubic)
* [[Pyrite structure]]
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'''Marcasite structure: (ortorhombic with simple unit cell)'''
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* [[Pyrite structure]]
* '''FeS<sub>2</sub> [https://en.wikipedia.org/wiki/Marcasite Marcasite]''' – Mohs 6.0-6.5 – 4.88g/ccm – compadred to pyrite: less chemically stable, smaller unit cell, lower crystal structure symmetry
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* [[Quartz structure]]
* FeSe<sub>2</sub> [https://en.wikipedia.org/wiki/Ferroselite Ferroselite] –  Mohs 6.0-6.5 – 7.2g/ccm – Fe substitutable by Ni (Kullerudit), Cu (Petříčekit)
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* <small>FeTe<sub>2</sub> Frohbergit – Fe substitutable by Co (Mattagamit)</small> – – <small>FePo<sub>2</sub> ?? (highly radioactive)</small>
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Marcasite structure (other group):
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* '''FeP<sub>2</sub> Zuktamururite''' – Mohs ??
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* FeAs<sub>2</sub> [https://en.wikipedia.org/wiki/Loellingite Loellingite] – Mohs 5.0-5.5 – 7.1-7.5g/ccm
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* FeSb<sub>2</sub> [https://materialsproject.org/materials/mp-20714/ (materialsproject)]
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* <small>(FeBi<sub>2</sub> – cannot be produced via [[thermodynamic means]] it seems – highly immiscible when molten – [https://pubs.acs.org/doi/10.1021/acscentsci.6b00287])</small>
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* Rammelsbergite (NiAs2) – has two polymorps: (Krutovit cubic) (Pararammelsbergit – orthorhombic)
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* Safflorit (CoAs2), <small>Omeiite (OsAs2), Anduoite (RuAs2)</small>
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* Nisbit (NiSb2)
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== Side-notes ==
 
== Side-notes ==

Revision as of 10:41, 28 June 2021

This article is a stub. It needs to be expanded.


Side-notes

The 3D voroni cells around the atoms can be used to gain sets of space-filling
polyhedral shapes for polyhedral microcomponents on a much larger scale.
(It's not Wiegner Seiz cells, this would bbe arround lattice points rather than atoms)

Related

External links

Wikipedia: