TD57AF4: A novelty at Sainte Marie-aux-Mines 2017. Chalcostibite crystals on matrix, one of them clearly dominant and partially doubly terminated. They are superficially replaced by Azurite, which has Malachite impregnations. The quality of the sample and the definition of the crystals are very high and unusual for the species.
This specimen was published on the Mineralogical Record´s web page, in the ‘What's New’ section, report 47, July 21, 2017 edition.
Rar el Anz, Oued Cherrat (Cherrat Wadi), Chaouia-Ouardigha, Casablanca Prefecture, Casablanca-Settat Region  Morocco (2017)

Specimen size: 3 × 2.1 × 1.1 cm = 1.18” × 0.83” × 0.43”

Main crystal size: 2.6 × 1.4 cm = 1.02” × 0.55”