Skarn
A rock formed at the contact between a magmatic intrusion and a carbonate rock (limestone, dolomite). Hot fluids replace the carbonates with calcium-rich silicates and often deposit metals.
Composition
Minerals: garnets (andradite, grossular), pyroxenes (diopside, hedenbergite), wollastonite; metals depending on the case: Cu, Fe, W, Mo, Zn, Pb, Au.
Sources
In the atlas
- Aysén, northern group (El Toqui, Katerfeld) Chile
- Hongshan-Hongniu China
- Grasberg Indonesia
- Azegour Morocco
- Batu Hijau Indonesia
- Santa Lucia (Buggerru) Italy
- Su Zurfuru Italy
- Rosas Italy
- Scalittas Italy
- Sarrabus Italy
- Dannemora Sweden
- Han-Xing China