Cornetite
A variety of Minerals
What is Cornetite?
Cornetite is a phosphate of copper with hydroxyl named after the geologist Jules Cornet [fr]. It was discovered in 1917.
Cornetite Market Value Calculator
Estimate the market value of Cornetite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Cornetite Localities Map
See where Cornetite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Composition of Cornetite
Unlike related phases such as Pseudomalachite, the copper atoms are all five-fold coordinated by oxygen. There are three unique copper sites that are all quite distorted from ideal symmetry. Two are in approximate tetragonal pyramids and the third is essentially a trigonal bipyramidal coordination. Edge sharing polyhedra lead to copper-copper dimer formation, and the overall structure is a three-dimensional network of copper-oxygen polyhedra.
Quick Facts
Physical Properties
- Color
- Dark blue to green-blue; green-blue in transmitted light.
- Hardness (Mohs)
- 4.5
- Density
- 4.1 g/cm³
Chemical Properties
- Chemical Formula
- Cu3(PO4)(OH)3
- Elements
- Cu, H, O, P
Identify Cornetite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
%252FAbenakiite-(ce)-01.jpg&size=small)
