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POTASSIUM

Miscellaneous

• Family: None
• Region: None
• Mined At: Unspecified
• Raw Mineral: Yes
• Generic: No

Notes

(Richard Willis)

Element, with the symbol K and atomic weight of 39.10
Water soluble. K₂CO₃ fuses at 890ºC. KNO₃ fuses at 340ºC. Popular alkali flux in temperatures from 500 to 1400ªC, though preferred for clays more than for glazes; and, owing to its high solubility in water, it is used mostly via clays and minerals of, and containing its, insoluble forms, such as potassium feldspar (“orthoclase”)
water solubility & fusion ºC
— carbonate — soluble — 891
— dichromate — soluble — 398
— nitrate — soluble — 333
— feldspar — insoluble — 1200
commonly used forms
— oxide K₂O
— chlorurium KCl
— hydroxide KOH
— sulfate K₂SO₄
— carbonate (potash) K₂CO₃
— nitrate KNO₃
— dichromate K₂Cr₂O₇
— feldspar K₂O, Al₂O₃, 6SiO₂

Authors

• Richard Willis (Owner)

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="POTASSIUM" descrip="" generic="0" rawmineral="1" searchkey="" loi="0.00">
<notes>
<note>Element, with the symbol K and atomic weight of 39.10&lt;BR&gt;
Water soluble. K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;CO&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt; fuses at 890&amp;ordm;C. KNO&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt; fuses at 340&amp;ordm;C. Popular alkali flux in temperatures from 500 to 1400&amp;ordf;C, though preferred for clays more than for glazes; and, owing to its high solubility in water, it is used mostly via clays and minerals of, and containing its, insoluble forms, such as potassium feldspar (&amp;#147;orthoclase&amp;#148;)&lt;BR&gt;
&lt;B&gt;water solubility &amp;amp; fusion &amp;ordm;C&lt;BR&gt;
&lt;/B&gt;&amp;#151; carbonate &amp;#151; soluble &amp;#151; 891&lt;BR&gt;
&amp;#151; dichromate &amp;#151; soluble &amp;#151; 398&lt;BR&gt;
&amp;#151; nitrate &amp;#151; soluble &amp;#151; 333&lt;BR&gt;
&amp;#151; feldspar &amp;#151; insoluble &amp;#151; 1200&lt;BR&gt;
&lt;B&gt;commonly used forms&lt;BR&gt;
&lt;/B&gt;&amp;#151; oxide K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O&lt;BR&gt;
&amp;#151; chlorurium KCl&lt;BR&gt;
&amp;#151; hydroxide KOH&lt;BR&gt;
&amp;#151; sulfate K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;SO&lt;FONT SIZE=2&gt;&lt;SUB&gt;4&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;&lt;BR&gt;
&lt;/SUB&gt;&amp;#151; carbonate (potash) K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;CO&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;&lt;BR&gt;
&lt;/SUB&gt;&amp;#151; nitrate KNO&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;&lt;BR&gt;
&lt;/SUB&gt;&amp;#151; dichromate K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;Cr&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O&lt;FONT SIZE=2&gt;&lt;SUB&gt;7&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;&lt;BR&gt;
&lt;/SUB&gt;&amp;#151; feldspar K&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O, Al&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;, 6SiO&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;&lt;SUB&gt;&lt;BR&gt;
&lt;/SUB&gt;

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

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