Arseniate of Copper

At first sight this looks like a very different modification from the last. It is, however, only more perfectly accumulated on the periphery of a wheel, as it were, united in large faces, either upon opposite ends of crystals, like the right hand lower figure, or mackle, and is sometimes formed of a variety composed of many, partly belonging to the left hand bottom figure. The ends become small and rough around the series of tab. 303, but large and smooth around this; whilst, on the contrary, the radii of the latter or column are generally most confused.