- Jaspillite
Jaspillite, or "jaspilite", is a chemical rock formed similar to
chert , but is generally quiteiron rich. It is also known astaconite . Jaspillite is also a mixture ofhematite andquartz common in thebanded iron formation rocks ofProterozoic andArchaean age in theCanadian shield .Jaspillite is also formed as exhalative chemical sediments in certain lead-zinc deposits, and as a
hydrothermal alteration facies around submarine volcanism.References
* [http://www.tc.umn.edu/~bakk0029/MinnLith/7.Reference.G-L.HTML Jaspillite and Taconite etymology]
* [http://www.mindat.org/min-26407.html Mindat.org data]
* [http://www.geologynet.com/hamerseley.htm Rob Kanen, 2001, "The Hamerseley Basin"]
Wikimedia Foundation. 2010.