A huge specimen completely covered with sparkling crystals of smithsonite, from Tsumeb! Tsumeb smithsonite came in a great variety of colors and forms, depending on the composition of the pocket solutions -- this one has grayish-tan crystals of an entirely different form than the more typical rhombs of the other specimen. The matrix here is a complex structure of sheets and protuberances, giving this large specimen quite a sculptural quality. It is covered all over with crystals; the only contact is on part of the underside, indicating that this matrix stuck out into the pocket and was exposed all over, allowing crystals to form everywhere on it. Ex. Rob Smith collection.