Lustrous crystals of Olivenite on Duftite/Conichalcite from the Tsumeb Mine, Namibia. Sharply formed prismatic crystals of Olivenite some double terminated, richly invest a contrasting green minutely botryoidal Duftite/Conichalcite matrix. Crystals of Olivenite are a dark brown to deep olive green colour, smaller cavities also lined with Olivenite crystals. A pleasing specimen of Olivenite from the mine.