Azurite and Malachite
A sample of azurite, the blue mineral, and malachite, the green mineral. Both azurite and malachite are copper minerals that were once used as pigments but are now mostly valued as collectors minerals. They do serve as good indicators of copper deposits that can be developed. Read more information about copper here.
Sample provided by Carlin Green, USGS. Sample originated from Milpillas Mine, Mexico, and is 6.6cm in size.