Calumetite
![](/images/thumb/c/c3/Calumentite_Webmineral.jpg/180px-Calumentite_Webmineral.jpg)
Calumentite; Jeff Weissman / Photographic Guide to Mineral Species at Web Mineral: Link
Description
A light blue copper corrosion product. Calumetite occurs rarely as a mineral. It has the composition of Cu(OH, Cl)2 - 2(H2O).
Resources and Citations
- David Scott, 'A Review of Copper Chlorides and Related Salts in Bronze Corrosion and as Painting Pigments'. Studies in Conservation, 45, 39-54, (2000).
- WebMineral: Calumentite
- Wikipedia: Calumentite
- Mindat: Calumentite