Authors

• Richard Willis (Owner)

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="NONTRONITE" descrip="" generic="0" rawmineral="1" searchkey="" loi="0.00">
<notes>
<note>Mineral, of the ideal form Fe&lt;FONT SIZE=2&gt;&lt;SUP&gt;3+&lt;/SUP&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt; [(OH)&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;, Al&lt;FONT SIZE=2&gt;&lt;SUB&gt;0&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;.&lt;FONT SIZE=2&gt;33&lt;/FONT&gt;&lt;/SUB&gt;&lt;FONT SIZE=2&gt;&lt;/FONT&gt;Si&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;.&lt;FONT SIZE=2&gt;67&lt;/FONT&gt;&lt;/SUB&gt;&lt;FONT SIZE=2&gt;&lt;/FONT&gt;O&lt;FONT SIZE=2&gt;&lt;SUB&gt;10&lt;/SUB&gt;&lt;/FONT&gt;]&lt;FONT SIZE=2&gt;&lt;SUP&gt;0.33&lt;/SUP&gt;&lt;/FONT&gt; Na&lt;FONT SIZE=2&gt;&lt;SUB&gt;0&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;.&lt;FONT SIZE=2&gt;33&lt;/FONT&gt;&lt;/SUB&gt;&lt;FONT SIZE=2&gt;&lt;/FONT&gt; (H&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O)&lt;FONT SIZE=2&gt;&lt;SUB&gt;4&lt;/SUB&gt;&lt;
/FONT&gt;, unstable and thus varying empirical analyses&lt;BR&gt;
Hardness: 1-2 Density: 2.3 Soluble in HCl&lt;BR&gt;
Clay-making mineral of the group &lt;B&gt;&lt;I&gt;smectite.&lt;/I&gt;&lt;/B&gt; &lt;FONT SIZE=2&gt;see &lt;B&gt;&lt;I&gt;clay minerals&lt;/I&gt;&lt;/B&gt;&lt;/FONT&gt;&lt;BR&gt;

</note>
</notes>
</material>

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