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Albite

Chemistry Na2O 11.820 Al2O3 19.440 SiO2 68.740

Links to Other Materials

• Anorthite - Related
• Orthoclase - Related
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Miscellaneous

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

Notes

(Richard Willis)

Mineral, of the ideal form NaAlSi₃O₈ with an empirical analysis of Na₂O 11.8%, Al₂O₃ 19.5%, SiO₂ 68.7% Hardness: 6-6.5 Density: 2.61-2.76
Insoluble in acids A sodium aluminosilicate feldspar mineral occurring most commonly in pegmatites and acidic igneous rocks such as granites, and even in low-grade metamorphic rocks and in certain sedimentary varieties — usually forming brittle, glassy crystals that are colorless, white, yellow, pink, green, or black. Albite constitutes the sodium end-member of both the plagioclase and the alkali feldspar series. Analbite is a form of albite which is stable only at temperatures above 700ºC. Popular as a source for an insoluble form of sodium when a feldspar is called for, particularly in glaze recipes; and is the commonly labeled simply “soda feldspar” when refined and packaged commercially. see alkali, feldspar and plagioclase

Authors

• Richard Willis (Owner)

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="Albite" descrip="" generic="0" rawmineral="1" searchkey="Soda Feldspar" loi="0.00">
<families>
<family name="Raw Mineral"/>
</families>
<oxides>
<oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="11.820" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="19.440" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="68.740" tolerance=""/>
</oxides>
<references>
<reference name="seealso" reason=""/>
<reference name="seealso" reason=""/>
</references>
<notes>
<note>&lt;p&gt;Mineral, of the ideal form NaAlSi&lt;FONT SIZE=2&gt;&lt;SUB&gt;3&lt;/SUB&gt;&lt;/FONT&gt;O&lt;FONT SIZE=2&gt;&lt;SUB&gt;8&lt;/SUB&gt;&lt;/FONT&gt; with an empirical analysis of Na&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt;O 11.8%, 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; 19.5%, SiO&lt;FONT SIZE=2&gt;&lt;SUB&gt;2&lt;/SUB&gt;&lt;/FONT&gt; 68.7%
Hardness: 6-6.5 Density: 2.61-2.76 &lt;br&gt;Insoluble in acids
A sodium aluminosilicate feldspar mineral occurring most commonly in pegmatites and acidic igneous rocks such as granites, and even in low-grade metamorphic rocks and in certain sedimentary varieties &amp;#151; usually forming brittle, glassy crystals that are colorless, white, yellow, pink, green, or black. Albite constitutes the sodium end-member of both the plagioclase and the alkali feldspar series. Analbite is a form of albite which is stable only at temperatures above 700&amp;ordm;C. Popular as a source for an insoluble form of sodium when a feldspar is called for, particularly in glaze recipes; and is the commonly labeled simply &amp;#147;soda feldspar&amp;#148; when refined and packaged commercially. &lt;FONT SIZE=2&gt;see &lt;B&gt;&lt;I&gt;alkali&lt;/I&gt;&lt;/B&gt;, &lt;B&gt;&lt;I&gt;feldspar&lt;/I&gt;&lt;/B&gt; and &lt;B&gt;&lt;I&gt;plagioclase&lt;/I&gt;&lt;/B&gt;
&lt;/FONT&gt;

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

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