{"id":119,"date":"2020-10-11T17:30:43","date_gmt":"2020-10-11T17:30:43","guid":{"rendered":"https:\/\/books.gw-project.org\/hydrogeologic-properties-of-earth-materials-and-principles-of-groundwater-flow\/?post_type=chapter&p=119"},"modified":"2020-12-29T17:40:31","modified_gmt":"2020-12-29T17:40:31","slug":"density-of-common-minerals-rock-types-and-soils","status":"publish","type":"chapter","link":"https:\/\/books.gw-project.org\/hydrogeologic-properties-of-earth-materials-and-principles-of-groundwater-flow\/chapter\/density-of-common-minerals-rock-types-and-soils\/","title":{"raw":"Box 1 Density of Common Minerals, Rock Types and Soils","rendered":"Box 1 Density of Common Minerals, Rock Types and Soils"},"content":{"raw":"The most common minerals on Earth are feldspar and quartz, with particle densities of 2.56 and 2.65 g\/cm3<\/sup>, respectively (Figure Box 1-1a). However, the particle density of many common rock-forming minerals ranges from 2.16 g\/cm3<\/sup> for salt to 2.8 g\/cm3<\/sup> for talc, with the exception of minerals containing iron such as tourmaline, hornblende, olivine, sphalerite, pyrite, magnetite and hematite with densities ranging from 3 to 5.25 g\/cm3<\/sup>. Clays, like kaolinite, are typically slightly less dense than quartz, with densities on the order of 2.6 g\/cm3<\/sup>. Metals have a broad range of density with lithium at 0.53 g\/cm3<\/sup>, aluminum at 2.7 g\/cm3<\/sup>, and iridium, which is used in phones, at 22.6 g\/cm3<\/sup>. The wet bulk density of rocks depends on the total porosity of the specific sample, so rocks of similar type have a broad range of bulk density due to differences in porosity (Figure Box 1-1b).\r\n\r\n[caption id=\"attachment_120\" align=\"alignnone\" width=\"844\"]\"Figure Figure Box 1-1<\/strong> Particle densities of some common minerals (g\/cm3<\/sup>) and range of wet bulk density of soils and common rock types (g\/cm3<\/sup>) (data from ThoughtCo (2020)).[\/caption]\r\n

Return to where text links to Box 1<\/a><\/p>","rendered":"

The most common minerals on Earth are feldspar and quartz, with particle densities of 2.56 and 2.65 g\/cm3<\/sup>, respectively (Figure Box 1-1a). However, the particle density of many common rock-forming minerals ranges from 2.16 g\/cm3<\/sup> for salt to 2.8 g\/cm3<\/sup> for talc, with the exception of minerals containing iron such as tourmaline, hornblende, olivine, sphalerite, pyrite, magnetite and hematite with densities ranging from 3 to 5.25 g\/cm3<\/sup>. Clays, like kaolinite, are typically slightly less dense than quartz, with densities on the order of 2.6 g\/cm3<\/sup>. Metals have a broad range of density with lithium at 0.53 g\/cm3<\/sup>, aluminum at 2.7 g\/cm3<\/sup>, and iridium, which is used in phones, at 22.6 g\/cm3<\/sup>. The wet bulk density of rocks depends on the total porosity of the specific sample, so rocks of similar type have a broad range of bulk density due to differences in porosity (Figure Box 1-1b).<\/p>\n

\"Figure
Figure Box 1-1<\/strong> Particle densities of some common minerals (g\/cm3<\/sup>) and range of wet bulk density of soils and common rock types (g\/cm3<\/sup>) (data from ThoughtCo (2020)).<\/figcaption><\/figure>\n

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