Illustration from 1911 Encyclopædia Britannica, article Brochantite.
Original text: The crystals are usually small and are prismatic or acicular in habit; they have a perfect cleavage parallel to the face lettered a in the adjoining figure.
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Illustration from 1911 Encyclopædia Britannica, article Brochantite. Original text: The crystals are usually small and are prismatic or acicular in habit; they have a perfect cleavage parallel to the face lettered a in the adjoining figure. {{PD-Brita