Quartzite
Silicone shellfish (chrysocolla, chrysocora) is a kind of silicate mineral. It is a composition in which carbonate of malachite (Cu 22) is replaced with phyllosilicic acid, and it is often produced simultaneously with malachite. However, unlike malachite, it can be distinguished from hydrochloric acid because it does not foam. Although the etymology means "gold solder" in Greek, it is thought that it was confused with something else, as it can not be thought that this ore was used. ...