![cover image](https://wikiwandv2-19431.kxcdn.com/_next/image?url=https://upload.wikimedia.org/wikipedia/commons/thumb/1/11/BIF_%2528jaspilite_meta-BIF%252C_Paleoproterozoic_Minas_Gerais.jpg/640px-BIF_%2528jaspilite_meta-BIF%252C_Paleoproterozoic_Minas_Gerais.jpg&w=640&q=50)
Jaspillite
Banded mixture of hematite and quartz / From Wikipedia, the free encyclopedia
Jaspillite (or jaspilite), also called itabirite or jasper taconite, is a chemical rock formed similar to chert, but is generally quite iron-rich. Jaspillite is typically a banded mixture of hematite and quartz common in the banded iron formation rocks of Proterozoic and Archaean age in the Canadian Shield.
![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/1/11/BIF_%28jaspilite_meta-BIF%2C_Paleoproterozoic_Minas_Gerais.jpg/640px-BIF_%28jaspilite_meta-BIF%2C_Paleoproterozoic_Minas_Gerais.jpg)
Jaspillite is also formed as exhalative chemical sediments in certain lead-zinc ore deposits, and as a hydrothermal alteration facies around submarine volcanism. It is used as a gemstone.[1]