Polymorphs of silicon dioxide - Revision history

Apm: /* Other polymorphs of SiO2 */ updated wikitodo

2025-09-29T08:39:26Z

Other polymorphs of SiO2: updated wikitodo

← Older revision		Revision as of 10:39, 29 September 2025
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	== Other polymorphs of SiO<sub>2</sub> ==		== Other polymorphs of SiO<sub>2</sub> ==

	* {{wikitodo\|~~add~~ some ~~more known ones~~}}		* {{wikitodo\|Better overview over the known polymorphs (structure images?) and in how far they may be able to form compatible transitions in some directions.}}
	* https://en.wikipedia.org/wiki/Category:Silica_polymorphs		* https://en.wikipedia.org/wiki/Category:Silica_polymorphs
	----		----

Apm at 11:03, 23 September 2025

2025-09-23T11:03:28Z

← Older revision		Revision as of 13:03, 23 September 2025
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	* https://en.wikipedia.org/wiki/Chibaite Mohs 7 cubic structure chalrate: <br>		* https://en.wikipedia.org/wiki/Chibaite Mohs 7 cubic structure chalrate: <br>
	* https://en.wikipedia.org/wiki/2D_silica		* https://en.wikipedia.org/wiki/2D_silica
			* CaCl<sub>2</sub>-type and α-PbO<sub>2</sub>-type (high pressure phases) <br>[https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2002GL016722 2003 – Stability of CaCl<sub>2</sub>-type and α-PbO2-type SiO<sub>2</sub> at high pressure and temperature determined by in-situ X-ray measurements]

	== Related ==		== Related ==

Apm: /* Especially interesting since unusually hard and dense */

2025-09-23T07:37:14Z

Especially interesting since unusually hard and dense

← Older revision		Revision as of 09:37, 23 September 2025
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	== Especially interesting since unusually hard and dense ==		== Especially interesting since unusually hard and dense ==

	* [[Stishovite]] –– may be transitionable into other gemstomes with the same [[rutile structure]] forming [[pseudo phase diagram]]s		* [[Stishovite]] Mohs 8.5-9.0 tetragonal –– may be transitionable into other gemstomes with the same [[rutile structure]] forming [[pseudo phase diagram]]s
	* [[Seifertite]] –– (scrutinyte structure)		* [[Seifertite]] Mohs ~9 orthorhombic –– (scrutinyte structure)
	Both are metastable very hard and very dense. <br>		Both are metastable very hard and very dense. <br>
	They may not be very resilient against high temperatures.		They may not be very resilient against high temperatures.

Apm: /* Other polymorphs of SiO2 */ added some examples

2025-09-23T07:21:54Z

Other polymorphs of SiO2: added some examples

@@ Line 15: / Line 15: @@
 == Other polymorphs of SiO<sub>2</sub> ==
-* {{wikitodo|add some known ones}}
+* {{wikitodo|add some more known ones}}
 == Related ==

Apm: added link to page: Neo-polymorphs

2021-04-25T07:41:08Z

added link to page: Neo-polymorphs

← Older revision		Revision as of 09:41, 25 April 2021
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	* [[Silicon]], [[Oxygen]]		* [[Silicon]], [[Oxygen]]
	* [[Gemstone like compound]]		* [[Gemstone like compound]]
			* [[Neo-polymorphs]]

Apm: /* More commonly known SiO2 gemstones */ added link to page Neo-polymorphs

2021-04-20T10:50:18Z

More commonly known SiO2 gemstones: added link to page Neo-polymorphs

← Older revision		Revision as of 12:50, 20 April 2021
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	* Common [[Quartz]]		* Common [[Quartz]]
	* amorphous forms (properties similar to: chalcedon, opal, obsidian, ...) <br>[[mechanosynthesis]] would allow for synthesis of '''pseudo amorphous configurations'''		* amorphous forms (properties similar to: chalcedon, opal, obsidian, ...) <br>[[mechanosynthesis]] would allow for synthesis of '''pseudo amorphous configurations''' <br> [[Neo-polymorph]]s

	== Especially interesting since unusually hard and dense ==		== Especially interesting since unusually hard and dense ==

Apm: /* Related / added Gemstone like compound

2021-04-20T10:40:14Z

Related: added * Gemstone like compound

← Older revision		Revision as of 12:40, 20 April 2021
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	* [[Silicon]], [[Oxygen]]		* [[Silicon]], [[Oxygen]]
			* [[Gemstone like compound]]

Apm: /* More commonly known SiO2 gemstones */ obsidianm -> obsidian

2021-04-20T10:39:20Z

More commonly known SiO2 gemstones: obsidianm -> obsidian

← Older revision		Revision as of 12:39, 20 April 2021
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	* Common [[Quartz]]		* Common [[Quartz]]
	* amorphous forms (properties similar to: chalcedon, opal, ~~obsidianm~~, ...) <br>[[mechanosynthesis]] would allow for synthesis of '''pseudo amorphous configurations'''		* amorphous forms (properties similar to: chalcedon, opal, obsidian, ...) <br>[[mechanosynthesis]] would allow for synthesis of '''pseudo amorphous configurations'''

	== Especially interesting since unusually hard and dense ==		== Especially interesting since unusually hard and dense ==

Apm: basic page

2021-04-20T10:38:45Z

basic page

New page

{{Stub}} __NOTOC__

== More commonly known SiO2 gemstones ==

* Common [[Quartz]]
* amorphous forms (properties similar to: chalcedon, opal, obsidianm, ...) [[mechanosynthesis]] would allow for synthesis of '''pseudo amorphous configurations'''

== Especially interesting since unusually hard and dense ==

* [[Stishovite]] –– may be transitionable into other gemstomes with the same [[rutile structure]] forming [[pseudo phase diagram]]s
* [[Seifertite]] –– (scrutinyte structure)
Both are metastable very hard and very dense. 
They may not be very resilient against high temperatures.

== Other polymorphs of SiO2 ==

* {{wikitodo|add some known ones}}

== Related ==

* [[Silicon]], [[Oxygen]]