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	<id>https://apm.bplaced.net/w/index.php?action=history&amp;feed=atom&amp;title=Topaz</id>
	<title>Topaz - Revision history</title>
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	<updated>2026-04-20T15:57:59Z</updated>
	<subtitle>Revision history for this page on the wiki</subtitle>
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	<entry>
		<id>https://apm.bplaced.net/w/index.php?title=Topaz&amp;diff=16116&amp;oldid=prev</id>
		<title>Apm at 10:17, 16 February 2024</title>
		<link rel="alternate" type="text/html" href="https://apm.bplaced.net/w/index.php?title=Topaz&amp;diff=16116&amp;oldid=prev"/>
		<updated>2024-02-16T10:17:43Z</updated>

		<summary type="html">&lt;p&gt;&lt;/p&gt;
&lt;table style=&quot;background-color: #fff; color: #202122;&quot; data-mw=&quot;interface&quot;&gt;
				&lt;col class=&quot;diff-marker&quot; /&gt;
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				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;← Older revision&lt;/td&gt;
				&lt;td colspan=&quot;2&quot; style=&quot;background-color: #fff; color: #202122; text-align: center;&quot;&gt;Revision as of 12:17, 16 February 2024&lt;/td&gt;
				&lt;/tr&gt;&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot; id=&quot;mw-diff-left-l15&quot;&gt;Line 15:&lt;/td&gt;
&lt;td colspan=&quot;2&quot; class=&quot;diff-lineno&quot;&gt;Line 15:&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Wikipedia: [https://en.wikipedia.org/wiki/Topaz Topaz]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* Wikipedia: [https://en.wikipedia.org/wiki/Topaz Topaz]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Topaz on www.mineralienatlas.de]&lt;/div&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot;&gt;&lt;/td&gt;&lt;td style=&quot;background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Topaz on www.mineralienatlas.de]&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;tr&gt;&lt;td colspan=&quot;2&quot; class=&quot;diff-side-deleted&quot;&gt;&lt;/td&gt;&lt;td class=&quot;diff-marker&quot; data-marker=&quot;+&quot;&gt;&lt;/td&gt;&lt;td style=&quot;color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;&quot;&gt;&lt;div&gt;&lt;ins style=&quot;font-weight: bold; text-decoration: none;&quot;&gt;* Wikipedia: [https://en.wikipedia.org/wiki/Mohs_scale Mohs scale]&lt;/ins&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;
&lt;/table&gt;</summary>
		<author><name>Apm</name></author>
	</entry>
	<entry>
		<id>https://apm.bplaced.net/w/index.php?title=Topaz&amp;diff=10292&amp;oldid=prev</id>
		<title>Apm: Created page with &quot; Two end members: * hydroxy-topaz: Al&lt;sub&gt;2&lt;/sub&gt;SiO&lt;sub&gt;4&lt;/sub&gt;(OH)&lt;sub&gt;2&lt;/sub&gt; * fluorine-topaz: Al&lt;sub&gt;2&lt;/sub&gt;SiO&lt;sub&gt;4&lt;/sub&gt;F&lt;sub&gt;2&lt;/sub&gt; – (Maybe some fluorine could be...&quot;</title>
		<link rel="alternate" type="text/html" href="https://apm.bplaced.net/w/index.php?title=Topaz&amp;diff=10292&amp;oldid=prev"/>
		<updated>2021-06-13T15:09:48Z</updated>

		<summary type="html">&lt;p&gt;Created page with &amp;quot; Two end members: * hydroxy-topaz: Al&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;SiO&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt;(OH)&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; * fluorine-topaz: Al&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;SiO&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt;F&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; – (Maybe some fluorine could be...&amp;quot;&lt;/p&gt;
&lt;p&gt;&lt;b&gt;New page&lt;/b&gt;&lt;/p&gt;&lt;div&gt;&lt;br /&gt;
Two end members:&lt;br /&gt;
* hydroxy-topaz: Al&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;SiO&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt;(OH)&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;&lt;br /&gt;
* fluorine-topaz: Al&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt;SiO&amp;lt;sub&amp;gt;4&amp;lt;/sub&amp;gt;F&amp;lt;sub&amp;gt;2&amp;lt;/sub&amp;gt; – (Maybe some fluorine could be replaced with the more common chlorine?)&lt;br /&gt;
&lt;br /&gt;
&amp;#039;&amp;#039;&amp;#039;A pretty hard aluminum silicate.&amp;#039;&amp;#039;&amp;#039; &amp;lt;br&amp;gt;&lt;br /&gt;
In terms of elemental composition between [[sapphire]] and [[quartz]].&lt;br /&gt;
&lt;br /&gt;
Other properties:&lt;br /&gt;
* Mohs 8 (defining mineral)&lt;br /&gt;
* Orthorhombic – (Nesosilicate like [[olivine]])&lt;br /&gt;
&lt;br /&gt;
== External links ==&lt;br /&gt;
&lt;br /&gt;
* Wikipedia: [https://en.wikipedia.org/wiki/Topaz Topaz]&lt;br /&gt;
* [https://www.mineralienatlas.de/lexikon/index.php/MineralData?mineral=Topaz on www.mineralienatlas.de]&lt;/div&gt;</summary>
		<author><name>Apm</name></author>
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