Calumetite
A variety of Minerals
What is Calumetite?
Calumetite is a natural rarely occurring mineral. It was discovered in 1963 at the Centennial Mine near Calumet, Michigan, United States. Calumetite was first discovered along with anthonyite. It has a chemical formula of Cu(OH,Cl)2•2(H2O).
Calumetite Market Value Calculator
Estimate the market value of Calumetite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.
Calumetite Localities Map
See where Calumetite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Characteristics of Calumetite
Calumetite occurs as a brilliant azure to powder blue mineral. It has a hardness of 2 with good cleavage along the {001} direction and belongs to the orthorhombic crystal system. Calumetite has a bluish-white streak. Its luster is pearly on cleavage. Calumetite has a brittle tenacity and is semitransparent. The specific gravity of calumetite could not be measured because of the difficulty in separating the quartz and epidote from the calumetite mineral coating them.
Quick Facts
Physical Properties
- Color
- Azure blue; Powder blue
- Hardness (Mohs)
- 2
Chemical Properties
- Chemical Formula
- CaCu4(OH)8Cl2·3.5H2O
- Elements
- Ca, Cl, Cu, H, O
Identify Calumetite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
%252FAbenakiite-(ce)-01.jpg&size=small)
