Contributor USGS
Naming Igneous Rocks describes how the relative amounts of quartz, plagioclase feldspar, and potassium feldspar are used to name igneous rocks. It describes several key terms and gives an example using a ternary diagram with an explanation on its use.
Naming Igneous Rocks describes how the relative amounts of quartz, plagioclase feldspar, and potassium feldspar are used to name igneous rocks. It describes several key terms and gives an example using a ternary diagram with an explanation on its use.
Contributor USGS
ACTIVITY MODULE
Sixth grade, Seventh grade, Eighth grade
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