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<p>of the container.)</p>

<p><big>Soil</big></p>
<p>The bulk density of soil depends greatly on the mineral make up of soil and the degree of <a href="page.php?w=Soil_compaction">compaction</a>.  The density of <a href="page.php?w=quartz">quartz</a> is around  but the (dry) bulk density of a mineral soil is normally about half that density, between . In contrast, soils rich in soil organic carbon and some friable clays tend to have lower bulk densities  due to a combination of the low-density of the organic materials themselves and increased <a href="page.php?w=porosity">porosity</a>.</p><p>
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