A showy and superb combination/pseudomorph specimen from the Silver Bill Mine of Arizona. Matte-finish, powder-blue rosasite coats sharp malachite pseudomorphs after azurite blades in a deep, well-placed vug on sculptural, quartz-rich matrix. The few contacted areas reveal the malachite beneath the rosasite coating. Superb and uncommon material from this well-known locality, that produced rich ore intermittently from 1893-1978. Ex. Mullane Collection.