More to explore:
Pumice: Igneous (Vesicular, Felsic)
Basalt: Igneous (Extrusive, Mafic)
basalt - God, wish I could favorite this multiple times and pin it a million more. Love this.
Granite is a coarse-grained, light colored, intrusive igneous rock that contains mainly quartz and feldspar minerals. The specimen above is about two inches (five centimeters) across.
Obsidian: Igneous (Glassy)
More igneous rock images to use for identifying your rock specimens
Intoduction to Igneous Rocks
Andesite: Igneous (Extrusive, Intermediate)
The multi-coloured pebbles on New Aberdour beach are the result of glacial deposits which form some of the soft sandstone / composite rock found at this location.
// Vintage mineral prints
A stunning halite specimen of water-clear, stacked echelon and offset cubes