This is a mineral classification often used for any globular blue to green silicate mineral with copper that isn’t otherwise classified.
Chemical Formula: 2-xAlx(H2-xSi2 O5 )(OH)4 · nH 2 O
Class: Silicates Phyllosilicates
Hardness: 2-4
Coloration: Blue, Blue Green
How to identify it/Unique Characteristics or Properties: This is a mineral classification often used for any globular blue to green silicate mineral with copper that isn’t otherwise classified. It can be made up in a lot of different ways, but generally found with other minerals.
Where to find it in…
The Northwest: All throughout, Oregon, Arizona, etc
Other: Worldwide, including Israel, England, Australia, Mexico and the United States.
Past Uses: Used as gemstones.
How it was Made: Oxidization of copper ore, usually found inter-grown other minerals. It can become hard and used in jewelry if turned into agates within quartz.
Interesting Facts: Called “pitchy copper ore”. Often associated with azurite, turquoise, and malachite.