Andesite

Definition

Andesite is a type of volcanic rock that forms when magma cools and solidifies near or on Earth's surface. It has a fine-grained texture and typically contains minerals such as plagioclase feldspar and amphibole.

Related terms

Igneous Rock: Igneous rocks are formed through the solidification of molten material (magma or lava). They can be classified into two main types: intrusive (formed beneath Earth's surface) and extrusive (formed on or above Earth's surface).

Volcanic Activity: Volcanic activity refers to various processes associated with volcanoes, including eruptions, lava flows, gas emissions, and formation of volcanic landforms.

Plagioclase Feldspar: Plagioclase feldspar is a common mineral found in many igneous rocks. It belongs to the feldspar group and has distinct cleavage planes that give it a characteristic appearance.