Demesmaekerite. An exposed vug in digenite and malachite has a 1 cm spray of demesmaekerite crystals of exceptional quality! Usually this species appears as dull greyish green crystals but these are a deep transulcent green color. The largest crystal is about 0.4 cm in length. 4.7 x 2.7 x 2.5 cm. Musonoi Extension, Katanga Province, Dem. Republic of the Congo

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