A fine, large cabinet-sized specimen of Mimetite from the famous Yanga Koubenza deposit in the Republic of the Congo. The specimen features numerous sharp, lustrous, yellow prismatic-to-tabular Mimetite crystals aesthetically scattered across a dark, contrasting limonitic matrix. The color contrast between the bright lemon-yellow crystals and the rich iron-oxide matrix is highly appealing. Weighing a substantial 180 grams with solid 3D dimensions, this piece serves as a very representative display specimen for West-Central African arsenate mineralogy.