Olivine - Revision history

Apm at 17:31, 27 November 2025

2025-11-27T17:31:45Z

← Older revision		Revision as of 19:31, 27 November 2025
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	'''Artificially mechanosynthesized ultra pure and flawless olivine would likely be colorless not green.'''		'''Artificially mechanosynthesized ultra pure and flawless olivine would likely be colorless not green.'''

			Gem grade olivine is called peridot.

	== External links ==		== External links ==

Apm: details

2021-06-13T15:59:17Z

details

← Older revision		Revision as of 17:59, 13 June 2021
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	* magnesium-olivine: Mg<sub>2</sub>SiO<sub>4</sub>		* magnesium-olivine: Mg<sub>2</sub>SiO<sub>4</sub>
	----		----
	* [https://en.wikipedia.org/wiki/Fayalite Fayalite] Fe<sub>2</sub>SiO<sub>4</sub> (Mohs 6.5-7) <br> High pressure crystal structure γ-Fe<sub>2</sub>SiO<sub>4</sub> is called '''Ahrensite'''		* [https://en.wikipedia.org/wiki/Fayalite Fayalite] Fe<sub>2</sub>SiO<sub>4</sub> (Mohs 6.5-7) <br> High pressure crystal structure γ-Fe<sub>2</sub>SiO<sub>4</sub> is called '''Ahrensite''' – [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Ahrensit] – (nice cubic unit cell – Mohs 6 – 4.26g/ccm)
	* [https://en.wikipedia.org/wiki/Forsterite Forsterite] Mg<sub>2</sub>SiO<sub>4</sub> (Mohs 7) <br> Mid pressure crystal structure is called: [https://en.wikipedia.org/wiki/Wadsleyite Wadsleyite] <br> High pressure crystal structure is called: [https://en.wikipedia.org/wiki/Ringwoodite Ringwoodite]		* [https://en.wikipedia.org/wiki/Forsterite Forsterite] Mg<sub>2</sub>SiO<sub>4</sub> (Mohs 7) <br> Mid pressure crystal structure is called: [https://en.wikipedia.org/wiki/Wadsleyite Wadsleyite] – (orthrombic – Mohs ? – 3.84g/ccm)<br> High pressure crystal structure is called: [https://en.wikipedia.org/wiki/Ringwoodite '''Ringwoodite'''] – (nice cubic unit cell – Mohs ? – 3.9g/ccm)

	Suitability of these compounds as [[gemstone-like compound\|base materials]] for [[gemstone metamaterial technology]] seems quite good.		Suitability of these compounds as [[gemstone-like compound\|base materials]] for [[gemstone metamaterial technology]] seems quite good.

Apm: duplicated over some parts of the Iron page

2021-06-13T15:46:27Z

duplicated over some parts of the Iron page

← Older revision		Revision as of 17:46, 13 June 2021
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	[[File:Pallasite_slice-of-Esquel-meteorite.jpg\|400px\|thumb\|right\|A type of stony-iron meterorite called "pallasite". The green parts are olivine. This is believed to be a material that can be found in large quantities at the core mantle boundary of larger rocky planets.]]		[[File:Pallasite_slice-of-Esquel-meteorite.jpg\|400px\|thumb\|right\|A type of stony-iron meterorite called "pallasite". The green parts are olivine. This is believed to be a material that can be found in large quantities at the core mantle boundary of larger rocky planets.]]

			'''Basic properties:'''
			* Mohs 6.5 to 7.0
			* Orthorhombic – (Nesosilicate like [[topaz]])
			* (Nontrivial base cell?)

	'''Two end members:'''		'''Two end members:'''
	* iron-olivine: Fe<sub>2</sub>SiO<sub>4</sub>		* iron-olivine: Fe<sub>2</sub>SiO<sub>4</sub>
	* magnesium-olivine: Mg<sub>2</sub>SiO<sub>4</sub>		* magnesium-olivine: Mg<sub>2</sub>SiO<sub>4</sub>
			----
			* [https://en.wikipedia.org/wiki/Fayalite Fayalite] Fe<sub>2</sub>SiO<sub>4</sub> (Mohs 6.5-7) <br> High pressure crystal structure γ-Fe<sub>2</sub>SiO<sub>4</sub> is called '''Ahrensite'''
			* [https://en.wikipedia.org/wiki/Forsterite Forsterite] Mg<sub>2</sub>SiO<sub>4</sub> (Mohs 7) <br> Mid pressure crystal structure is called: [https://en.wikipedia.org/wiki/Wadsleyite Wadsleyite] <br> High pressure crystal structure is called: [https://en.wikipedia.org/wiki/Ringwoodite Ringwoodite]

	~~'''Other properties:'''~~		Suitability of these compounds as [[gemstone-like compound\|base materials]] for [[gemstone metamaterial technology]] seems quite good.
	* Mohs 6.5 to 7.0
	* Orthorhombic – (Nesosilicate like [[topaz]])
	* (Nontrivial base cell?)

	Suitability as a [[gemstone-like compound\|base ~~material~~]] for [[gemstone metamaterial technology]] seems quite good.

	== Some Trivia ==		== Some Trivia ==

Apm: /* Related */ added Iron

2021-06-13T15:42:55Z

Related: added Iron

← Older revision		Revision as of 17:42, 13 June 2021
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	* [[Colonization of the solar system]]		* [[Colonization of the solar system]]
			* [[Iron]]

Apm: added links

2021-06-13T15:37:00Z

added links

← Older revision		Revision as of 17:37, 13 June 2021
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	Olivine is an extremely common mineral. <br>		Olivine is an extremely common mineral. <br>
	It is believed that there are large quantities of this stuff down at the core mantle boundary of Earth and above. <br>		It is believed that there are large quantities of this stuff down at the core mantle boundary of Earth and above. <br>
	We know that from stony–iron meteorites called "pallasites" (very pretty to look at).		We know that from stony–iron meteorites called "pallasites" (very pretty to look at). <br>
			The asteroid [[psyche (asteroid)\|psyche]] is believed to be the biggest arteroid in the asteroid belt that is mainly made out of [[pallasite]].

	Artificially mechanosynthesized ultra pure and flawless olivine would likely be colorless not green.		'''Artificially mechanosynthesized ultra pure and flawless olivine would likely be colorless not green.'''

	== External links ==		== External links ==
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	* Wikipedia: [https://en.wikipedia.org/wiki/Pallasite Pallasite]		* Wikipedia: [https://en.wikipedia.org/wiki/Pallasite Pallasite]
	* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Olivine on www.mineralienatlas.de]		* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Olivine on www.mineralienatlas.de]
			----
			* https://en.wikipedia.org/wiki/16_Psyche
			* https://en.wikipedia.org/wiki/Psyche_(spacecraft)
			* https://www.nasa.gov/psyche

			== Related ==

			* [[Colonization of the solar system]]

Apm: basic page

2021-06-13T15:31:03Z

basic page

New page

[[File:Pallasite_slice-of-Esquel-meteorite.jpg|400px|thumb|right|A type of stony-iron meterorite called "pallasite". The green parts are olivine. This is believed to be a material that can be found in large quantities at the core mantle boundary of larger rocky planets.]]

'''Two end members:'''
* iron-olivine: Fe2SiO4
* magnesium-olivine: Mg2SiO4

'''Other properties:'''
* Mohs 6.5 to 7.0
* Orthorhombic – (Nesosilicate like [[topaz]])
* (Nontrivial base cell?)

Suitability as a [[gemstone-like compound|base material]] for [[gemstone metamaterial technology]] seems quite good.

== Some Trivia ==

Olivine is an extremely common mineral. 
It is believed that there are large quantities of this stuff down at the core mantle boundary of Earth and above. 
We know that from stony–iron meteorites called "pallasites" (very pretty to look at).

Artificially mechanosynthesized ultra pure and flawless olivine would likely be colorless not green.

== External links ==

* Wikipedia: [https://en.wikipedia.org/wiki/Olivine Olivine]
* Wikipedia: [https://en.wikipedia.org/wiki/Pallasite Pallasite]
* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Olivine on www.mineralienatlas.de]