Andesinite

/ænˈdɛsɪnaɪt/ noun

Definition

An igneous rock composed primarily of andesine feldspar, a type of volcanic or plutonic rock.

Etymology

Formed from 'andesine' (the mineral) plus the geology suffix -ite, which means 'rock' or 'stone.' The suffix creates names for rock types based on their primary minerals.

Kelly Says

Geologists name rocks by dropping the -ine from mineral names and adding -ite, creating a simple code where andesine becomes andesinite—a naming system as logical as chemistry itself.

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