crystallite: Quick Facts

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belonite globulite scopulite bacillite crystal igneous rock liquid crystal felsic and mafic rocks pleochroism double refraction symmetry polymorphism pegmatite Brewster’s law How are crystals made?crystal defect

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones