https://apm.bplaced.net/w/index.php?action=history&feed=atom&title=Marcasite_structure Marcasite structure - Revision history 2026-04-20T19:18:50Z Revision history for this page on the wiki MediaWiki 1.43.0 https://apm.bplaced.net/w/index.php?title=Marcasite_structure&diff=10979&oldid=prev Apm: factored out from * Simple crystal structures of especial interest 2021-06-28T09:33:41Z <p>factored out from * <a href="/w/index.php?title=Simple_crystal_structures_of_especial_interest" title="Simple crystal structures of especial interest">Simple crystal structures of especial interest</a></p> <p><b>New page</b></p><div>&#039;&#039;&#039;Marcasite structure: (ortorhombic with simple unit cell)&#039;&#039;&#039;<br /> * &#039;&#039;&#039;FeS&lt;sub&gt;2&lt;/sub&gt; [https://en.wikipedia.org/wiki/Marcasite Marcasite]&#039;&#039;&#039; – Mohs 6.0-6.5 – 4.88g/ccm – compadred to pyrite: less chemically stable, smaller unit cell, lower crystal structure symmetry<br /> * FeSe&lt;sub&gt;2&lt;/sub&gt; [https://en.wikipedia.org/wiki/Ferroselite Ferroselite] – Mohs 6.0-6.5 – 7.2g/ccm – Fe substitutable by Ni (Kullerudit), Cu (Petříčekit)<br /> * &lt;small&gt;FeTe&lt;sub&gt;2&lt;/sub&gt; Frohbergit – Fe substitutable by Co (Mattagamit)&lt;/small&gt; – – &lt;small&gt;FePo&lt;sub&gt;2&lt;/sub&gt; ?? (highly radioactive)&lt;/small&gt;<br /> Marcasite structure (other group):<br /> * &#039;&#039;&#039;FeP&lt;sub&gt;2&lt;/sub&gt; Zuktamururite&#039;&#039;&#039; – Mohs ??<br /> * FeAs&lt;sub&gt;2&lt;/sub&gt; [https://en.wikipedia.org/wiki/Loellingite Loellingite] – Mohs 5.0-5.5 – 7.1-7.5g/ccm<br /> * FeSb&lt;sub&gt;2&lt;/sub&gt; [https://materialsproject.org/materials/mp-20714/ (materialsproject)]<br /> * &lt;small&gt;(FeBi&lt;sub&gt;2&lt;/sub&gt; – cannot be produced via [[thermodynamic means]] it seems – highly immiscible when molten – [https://pubs.acs.org/doi/10.1021/acscentsci.6b00287])&lt;/small&gt;<br /> * Rammelsbergite (NiAs2) – has two polymorps: (Krutovit cubic) (Pararammelsbergit – orthorhombic) <br /> * Safflorit (CoAs2), &lt;small&gt;Omeiite (OsAs2), Anduoite (RuAs2)&lt;/small&gt;<br /> * Nisbit (NiSb2)<br /> <br /> == Related ==<br /> <br /> * [[Simple crystal structures of especial interest]]<br /> * [[Gemstone like compounds]]</div> Apm