Hydroxide - Revision history

Apm: /* Decently hard iron and manganese hydroxides */ note on transparency and occurrence in nature

2016-12-06T09:47:18Z

Decently hard iron and manganese hydroxides: note on transparency and occurrence in nature

← Older revision		Revision as of 11:47, 6 December 2016
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	== Decently hard iron and manganese hydroxides ==		== Decently hard iron and manganese hydroxides ==

			Macroscopic flawless AP single crystals of these minerals are most likely intransparent in the visible spectrum. <br>
			In nature these iron hydroxide minerals occur in the rock [https://en.wikipedia.org/wiki/Limonite limonite].

	* α-FeO(OH) [https://en.wikipedia.org/wiki/Goethite Goethite] Mohs 5-5.5		* α-FeO(OH) [https://en.wikipedia.org/wiki/Goethite Goethite] Mohs 5-5.5
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	* γ-FeO(OH) [https://en.wikipedia.org/wiki/Lepidocrocite Lepidocrocite] Mohs 5		* γ-FeO(OH) [https://en.wikipedia.org/wiki/Lepidocrocite Lepidocrocite] Mohs 5
	* δ-FeO(OH) [https://en.wikipedia.org/wiki/Feroxyhyte Feroxyhyte] Mohs ??		* δ-FeO(OH) [https://en.wikipedia.org/wiki/Feroxyhyte Feroxyhyte] Mohs ??
			----
	* α-MnO(OH) [https://en.wikipedia.org/wiki/Groutite Groutite] Mohs 3.5-4		* α-MnO(OH) [https://en.wikipedia.org/wiki/Groutite Groutite] Mohs 3.5-4
	* β-MnO(OH) [http://www.webmineral.com/data/Feitknechtite.shtml#.WEZayx8l93E Feitknechtite (webminerals)] Mohs ??		* β-MnO(OH) [http://www.webmineral.com/data/Feitknechtite.shtml#.WEZayx8l93E Feitknechtite (webminerals)] Mohs ??

Apm: link to wikipedia page of hydroxide minerals

2016-12-06T08:55:08Z

link to wikipedia page of hydroxide minerals

← Older revision		Revision as of 10:55, 6 December 2016
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	* Vanadium hydroxides: V<sub>3</sub>O<sub>4</sub>(OH)<sub>4</sub> Doloresite		* Vanadium hydroxides: V<sub>3</sub>O<sub>4</sub>(OH)<sub>4</sub> Doloresite

	== Notes ==		= Notes =

	Many hydroxides can be found in the Bauxite Laterite mineral group.		Many hydroxides can be found in the Bauxite Laterite mineral group.
	Bauxite is today (2016) the primary aluminium ore.		Bauxite is today (2016) the primary aluminium ore.
	With todays non AP technology it's not economically possible to extract aluminium from rocks containing silicon which is the second most common element in earths crust after oxygen. With advanced atomically precise gem-gum-technology red mud could become a better usable resource.		With todays non AP technology it's not economically possible to extract aluminium from rocks containing silicon which is the second most common element in earths crust after oxygen. With advanced atomically precise gem-gum-technology red mud could become a better usable resource.

			= External Links =

			* [https://en.wikipedia.org/wiki/Category:Hydroxide_minerals Wikipedia: Hydroxide minerals]

Apm: /* Hydroxides of more rare elements */ doleresite

2016-12-06T08:54:05Z

Hydroxides of more rare elements: doleresite

← Older revision		Revision as of 10:54, 6 December 2016
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	* CrOOH [https://en.wikipedia.org/wiki/Guyanaite Guyanaite] Bracewellite Grimaldiite -- Mohs ??		* CrOOH [https://en.wikipedia.org/wiki/Guyanaite Guyanaite] Bracewellite Grimaldiite -- Mohs ??
	* GaO(OH) [https://de.wikipedia.org/wiki/Tsumgallit Tsumgallit] Mohs 1-2 (very soft and containing rare gallium)		* GaO(OH) [https://de.wikipedia.org/wiki/Tsumgallit Tsumgallit] Mohs 1-2 (very soft and containing rare gallium)
	* Vanadium hydroxides		* Vanadium hydroxides: V<sub>3</sub>O<sub>4</sub>(OH)<sub>4</sub> Doloresite

	== Notes ==		== Notes ==

Apm: /* Hydroxides of aluminum */

2016-12-06T08:48:19Z

Hydroxides of aluminum

← Older revision		Revision as of 10:48, 6 December 2016
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	* α-AlO(OH) [https://en.wikipedia.org/wiki/Diaspore Diaspore] '''Mohs 6.5-7 (pretty hard!)'''		* α-AlO(OH) [https://en.wikipedia.org/wiki/Diaspore Diaspore] '''Mohs 6.5-7 (pretty hard!)'''
			* β-AlO(OH) (name abandoned due to inconsistent nomenclature maybe ??)
	* γ-AlO(OH) [https://en.wikipedia.org/wiki/Boehmite Beohmite] Mohs 3.5		* γ-AlO(OH) [https://en.wikipedia.org/wiki/Boehmite Beohmite] Mohs 3.5
	* γ-Al(OH)<sub>3</sub> [https://en.wikipedia.org/wiki/Gibbsite Gibbsite (Hydrargillite/Bayerite)] Mohs 2.5-3.5		* γ-Al(OH)<sub>3</sub> [https://en.wikipedia.org/wiki/Gibbsite Gibbsite (Hydrargillite/Bayerite)] Mohs 2.5-3.5

Apm: /* Hydroxides of aluminum */ added another name for Gibbsite

2016-12-06T08:46:00Z

Hydroxides of aluminum: added another name for Gibbsite

← Older revision		Revision as of 10:46, 6 December 2016
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	* α-AlO(OH) [https://en.wikipedia.org/wiki/Diaspore Diaspore] '''Mohs 6.5-7 (pretty hard!)'''		* α-AlO(OH) [https://en.wikipedia.org/wiki/Diaspore Diaspore] '''Mohs 6.5-7 (pretty hard!)'''
	* γ-AlO(OH) [https://en.wikipedia.org/wiki/Boehmite Beohmite] Mohs 3.5		* γ-AlO(OH) [https://en.wikipedia.org/wiki/Boehmite Beohmite] Mohs 3.5
	* γ-Al(OH)<sub>3</sub> [https://en.wikipedia.org/wiki/Gibbsite Gibbsite (Hydrargillite)] Mohs 2.5-3.5		* γ-Al(OH)<sub>3</sub> [https://en.wikipedia.org/wiki/Gibbsite Gibbsite (Hydrargillite/Bayerite)] Mohs 2.5-3.5

	== Decently hard iron and manganese hydroxides ==		== Decently hard iron and manganese hydroxides ==

Apm: /* Decently hard iron and manganese hydroxides */ added Hydroxy-Akaganeite

2016-12-06T08:39:51Z

Decently hard iron and manganese hydroxides: added Hydroxy-Akaganeite

← Older revision		Revision as of 10:39, 6 December 2016
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	* α-FeO(OH) [https://en.wikipedia.org/wiki/Goethite Goethite] Mohs 5-5.5		* α-FeO(OH) [https://en.wikipedia.org/wiki/Goethite Goethite] Mohs 5-5.5
			* β-FeO(OH) [https://en.wikipedia.org/wiki/Akagan%C3%A9ite Hydroxy-Akaganeite] Mohs ??
	* γ-FeO(OH) [https://en.wikipedia.org/wiki/Lepidocrocite Lepidocrocite] Mohs 5		* γ-FeO(OH) [https://en.wikipedia.org/wiki/Lepidocrocite Lepidocrocite] Mohs 5
	* δ-FeO(OH) [https://en.wikipedia.org/wiki/Feroxyhyte Feroxyhyte] Mohs ??		* δ-FeO(OH) [https://en.wikipedia.org/wiki/Feroxyhyte Feroxyhyte] Mohs ??

Apm: preety good initial version of the page

2016-12-06T06:49:29Z

preety good initial version of the page

New page

Many hydroxides are rather soft but there are a few exceptions that might be pretty useful as structural building materials.

== Hydroxides of aluminum ==

* α-AlO(OH) [https://en.wikipedia.org/wiki/Diaspore Diaspore] '''Mohs 6.5-7 (pretty hard!)'''
* γ-AlO(OH) [https://en.wikipedia.org/wiki/Boehmite Beohmite] Mohs 3.5
* γ-Al(OH)3 [https://en.wikipedia.org/wiki/Gibbsite Gibbsite (Hydrargillite)] Mohs 2.5-3.5

== Decently hard iron and manganese hydroxides ==

* α-FeO(OH) [https://en.wikipedia.org/wiki/Goethite Goethite] Mohs 5-5.5
* γ-FeO(OH) [https://en.wikipedia.org/wiki/Lepidocrocite Lepidocrocite] Mohs 5
* δ-FeO(OH) [https://en.wikipedia.org/wiki/Feroxyhyte Feroxyhyte] Mohs ??

* α-MnO(OH) [https://en.wikipedia.org/wiki/Groutite Groutite] Mohs 3.5-4
* β-MnO(OH) [http://www.webmineral.com/data/Feitknechtite.shtml#.WEZayx8l93E Feitknechtite (webminerals)] Mohs ??
* γ-MnO(OH) [https://en.wikipedia.org/wiki/Manganite Manganite] Mohs 4

== Soft hydroxides of earth alkali metals ==

* Mg(OH)2 [https://en.wikipedia.org/wiki/Brucite Brucite] Mohs 2.5-3
* Ca(OH)2 [https://en.wikipedia.org/wiki/Portlandite Portlandite] Mohs 2

The hydroxides of alkali metals (sodium and potassium - NaOH & KOH) are highly water soluble and form highly basic solutions aggressive to human skin and dangerous to the eyes. They are not suitable for surface exposed building materials.

== Hydroxides of more rare elements ==

* CrOOH [https://en.wikipedia.org/wiki/Guyanaite Guyanaite] Bracewellite Grimaldiite -- Mohs ??
* GaO(OH) [https://de.wikipedia.org/wiki/Tsumgallit Tsumgallit] Mohs 1-2 (very soft and containing rare gallium)
* Vanadium hydroxides

== Notes ==

Many hydroxides can be found in the Bauxite Laterite mineral group.
Bauxite is today (2016) the primary aluminium ore.
With todays non AP technology it's not economically possible to extract aluminium from rocks containing silicon which is the second most common element in earths crust after oxygen. With advanced atomically precise gem-gum-technology red mud could become a better usable resource.