TC90AL5: A novelty at the Sainte Marie 2020 Virtual show: Quartz crystals, one of them clearly dominant, covered by two generations of very vivid greenish blue chrysocolla, the first forming a smooth and uniform cover and the other, later, in botryoidal growths. From a well known Peruvian locality but one from which this type of specimen had not been found before.
Tentadora Mine, Ullpac Mountain, Huancano District, Pisco Province, Ica Department  Peru (03/2020)

Specimen size: 6.4 × 3.5 × 3.9 cm = 2.52” × 1.38” × 1.54”