You would find extrusive igneous rocks. Beyond that it depends on the volcano.
yes it can be found in iceland ;]
You would expect to find an igneous rock with small crystals near the Earth's surface where the rock cools relatively quickly, such as in volcanic eruptions or magma intrusions that do not have much time to grow large crystals. These rocks are known as volcanic or extrusive igneous rocks.
You would find extrusive igneous rocks. Beyond that it depends on the volcano.
Extrusive, Igneous rocks possibly lavas or ignimbrites.
You would expect to find plagioclase feldspar in a greater variety of igneous rocks compared to biotite. Plagioclase feldspar is a more common mineral and is found in both mafic and felsic rocks, while biotite is typically found in intermediate to felsic rocks.
Iceland is mostly composed of Basalt, but all rocks are 'Basic' or 'Mafic' as the whole island is a volcano. Basalt is an Igneous rock.
Igneous Rocks - Rocks formed by crystallization from a melt (magma)
I would expect a light gray igneous rock to be rich in silica. Light gray color in igneous rocks is often associated with high silica content, which is typical of felsic or granitic compositions.
There are lots of volcanic landforms, as Iceland was created by volcanoes. Lots of igneous rocks, geothermal pools, volcanoes, as well as glaciers.
The three major classes of rock that you would expect to find as bedrock in Mount Shasta are metamorphic rocks, igneous rocks (such as andesite, dacite, and basalt), and sedimentary rocks. Metamorphic rocks would likely include schist, gneiss, and marble, while igneous rocks might be found in the form of lava flows and volcanic rocks. Sedimentary rocks like limestone and sandstone could also be present in the region.
Igneous rocks are rocks formed by magma. so the best place to find igneous rocks would be by volcanoes or where a volcano once erupted.