In the summer of 2019, we brought back some specimens of these two minerals from the Chivor emerald mines, which, contrary to expectations, have held up very well above ground. The Pickeringite consists of snow-white fibrous crystals, the Mg-Copiapite of orange spherical aggregates.
The 2nd photo shows the Mg-Copiapite underground
Corte San Pedro, Chivor, Boyacá, Colombia
3.1 x 2.4 cm
