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Calcium Feldspar

Chemistry CaO 10.820 Al2O3 19.660 SiO2 69.520

Links to Other Materials

• Anorthite - Related
• Cache

Miscellaneous

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

Notes

2(CaO.Al2O3).4SiO2
Feldspars are roughly divided into lithium, potash, soda, and calcium. Theoretical formulae for each are generally not found in nature. Almost all feldspars will contain some CaO, Na2O, and K2O at least.

If possible it is best to enter the analysis of the exact feldspar brand used and employ it in recipe calculations.

(Richard Willis)

Any of the calcium-bearing aluminosilicate minerals, the paradigm being anorthite. see alkali, alkali feldspar, feldspar, feldspathoid, feldspathic earths, plagioclase feldspars, clay minerals, etc.

Data

• Melting Point (MP): 1550C
• Specific Gravity: 2.7-2.8
• Hardness (Moh): 6-7
• Hardness (Moh): 6-7
• Specific Gravity: 2.7-2.8
• Melting Point (MP): 1550C

Suppliers

• Generic
  

Authors

• Tony Hansen (Owner)

XML

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<material name="Calcium Feldspar" descrip="" generic="1" rawmineral="0" searchkey="Lime Spar, Lime Feldspar, Anorthite" loi="0.00">
<families>
<family name="Feldspar"/>
</families>
<oxides>
<oxide symbol="CaO" name="Calcium Oxide, Calcia" status="U" percent="10.820" tolerance=""/>
<oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="19.660" tolerance=""/>
<oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="69.520" tolerance=""/>
</oxides>
<references>
<reference name="seealso" reason=""/>
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<notes>
<note>2(CaO.Al2O3).4SiO2
Feldspars are roughly divided into lithium, potash, soda, and calcium. Theoretical formulae for each are generally not found in nature. Almost all feldspars will contain some CaO, Na2O, and K2O at least.

If possible it is best to enter the analysis of the exact feldspar brand used and employ it in recipe calculations.</note>
<note>Any of the calcium-bearing aluminosilicate minerals, the paradigm being anorthite. &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;alkali feldspar&lt;/I&gt;&lt;/B&gt;, &lt;B&gt;&lt;I&gt;feldspar&lt;/I&gt;&lt;/B&gt;, &lt;B&gt;&lt;I&gt;feldspathoid&lt;/I&gt;&lt;/B&gt;, &lt;B&gt;&lt;I&gt;feldspathic earths&lt;/I&gt;&lt;/B&gt;, &lt;B&gt;&lt;I&gt;plagioclase feldspars, clay minerals,&lt;/I&gt;&lt;/B&gt; etc.&lt;/FONT&gt;</note>
</notes>
<testdata>
<testitem testname="1" value="1550C"/>
<testitem testname="1" value="2.7-2.8"/>
<testitem testname="1" value="6-7"/>
<testitem testname="1" value="6-7"/>
<testitem testname="1" value="2.7-2.8"/>
<testitem testname="1" value="1550C"/>
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</material>

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