The story
From white + schist. Coined in 1973 by German geoscientist Werner Schreyer in his article Whiteschist: A High-Pressure Rock and its Geologic Significance.
Etymology from Wiktionary, CC BY-SA 4.0.
whiteschist
Today it means: A metamorphic rock formed in high-pressure environments, composed principally of talc and kyanite. Full definition →