Not quite right?
"Search similar patterns."
B______
Definitions
dark brown to black mica found in igneous and metamorphic rock
Word origin
From Biot + -ite, named by J.F.L. Hausmann in 1847 in honour of the French physicist Jean-Baptiste Biot, who, in 1816, researched the optical properties of mica, discovering many unique properties.
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer0 curated clues
No curated clues for biotite yet.