groundmass Definition
the matrix of smaller crystals within an igneous rock that has a uniform texture.
Using groundmass: Examples
Take a moment to familiarize yourself with how "groundmass" can be used in various situations through the following examples!
Example
The groundmass of this rock is composed of plagioclase and pyroxene.
Example
The groundmass of the granite is made up of quartz, feldspar, and mica.
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Summary: groundmass in Brief
The term 'groundmass' [ground-mas] refers to the matrix of smaller crystals within an igneous rock that has a uniform texture. It is composed of minerals such as plagioclase, pyroxene, quartz, feldspar, and mica.
