CHRYSOCOLLA ROCK SPECIMEN
Chrysocolla Rock Specimen with vibrant colour and coverage over the host rock. A deep blue green lustrous coating on bubbly or botryoidal forms.
Etoile Mine, Lubumbashi, Congo.
7.9cm x 5.6cm x 3.2cm, 78g.
Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O.
The name Chrysocolla was first used by Theophrastus in 315 B.C. and comes from the Greek chrysos, meaning “gold,” and kolla, meaning “glue,” in allusion to the name of the material used to solder gold.