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	<title>Brookite - Revision history</title>
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	<updated>2026-04-20T16:04:08Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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		<title>Apm: basic page</title>
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		<updated>2021-06-24T06:38:18Z</updated>

		<summary type="html">&lt;p&gt;basic page&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;* Titanium is common in earths crust (and in space)&lt;br /&gt;
* Hardness is decent&lt;br /&gt;
* Crystal structure is simple&lt;br /&gt;
* Unit cell is not a bit fragmented (choose other unit cell?)&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;Overall a good structural base material for [[gemstone metamaterial technology]] for larger scale construction.&amp;#039;&amp;#039;&amp;#039;&lt;br /&gt;
&lt;br /&gt;
* Formula: TiO&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&lt;br /&gt;
* Hardness Mohs 5.5 to 6.0&lt;br /&gt;
* Crystal system: orthorhombic&lt;br /&gt;
* Density ~4,133g/ccm&lt;br /&gt;
* Refractive index: n&amp;lt;sub&amp;gt;α&amp;lt;/sub&amp;gt; = 2,583, n&amp;lt;sub&amp;gt;β&amp;lt;/sub&amp;gt; = 2,584, n&amp;lt;sub&amp;gt;γ&amp;lt;/sub&amp;gt; = 2,700 – quite high&lt;br /&gt;
&lt;br /&gt;
== Related ==&lt;br /&gt;
&lt;br /&gt;
* [[Titanium]]&lt;br /&gt;
Other polymorphs of same formula:&lt;br /&gt;
* [[Anatase]]&lt;br /&gt;
* [[Rutile]]&lt;br /&gt;
* [[Tistarite]]&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
&lt;br /&gt;
* Wikipedia: [https://en.wikipedia.org/wiki/Brookite Brookite]&lt;br /&gt;
* mineralientalas.de: [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Brookite Brookite] (3D structure)&lt;/div&gt;</summary>
		<author><name>Apm</name></author>
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