CALCAREOUS Earths

Miscellaneous

Notes

(Richard Willis)

As with calcareous rocks, calcareous earths are principally of calcium carbonate accompanied by aluminum silicates in feldspathic forms, but with far more “impurities” than are rocks, simply owing to the fact that earths are likely mixtures of minerals and oxides of more varied and distinct origins than are rocks. Calcareous earths are good for potters, but bad for farmers, since, often as not, there will be a good portion of lime present — ergo, the common nomenclature of “
;chalky earth”. see alkali and soils


Authors

XML

<?xml version="1.0" encoding="UTF-8"?>
<material name="CALCAREOUS Earths" descrip="" generic="0" rawmineral="1" searchkey="Limestone Earths" loi="0.00">
<families>
<family name="Raw Mineral"/>
</families>
<notes>
<note>As with calcareous &lt;B&gt;&lt;I&gt;rocks&lt;/I&gt;&lt;/B&gt;, calcareous earths are principally of calcium carbonate accompanied by aluminum silicates in feldspathic forms, but with far more &amp;#147;impurities&amp;#148; than are rocks, simply owing to the fact that earths are likely mixtures of minerals and oxides of more varied and distinct origins than are rocks. Calcareous earths are good for potters, but bad for farmers, since, often as not, there will be a good portion of lime present &amp;#151; ergo, the common nomenclature of &amp;#147
;&lt;B&gt;&lt;I&gt;chalky earth&lt;/I&gt;&lt;/B&gt;&lt;I&gt;&amp;#148;&lt;/I&gt;. &lt;FONT SIZE=2&gt;see &lt;B&gt;&lt;I&gt;alkali &lt;/I&gt;&lt;/B&gt;and&lt;B&gt;&lt;I&gt; soils&lt;/I&gt;&lt;/B&gt;

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


Much more information with complete interlinking to many related
databases can be found by logging into the www.ceramicmaterials.info database

Copyright 2003 http://digitalfire.com, All Rights Reserved
Please support http://ceramicmaterials.info to improve this library
instrial.gif (4460 bytes)

INSIGHT is ceramic chemistry
calculation software that runs on
Windows, Mac and Linux and talks
to this web site.