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Jaspillite, or jaspilite, is a chemical rock formed similar to chert, but is generally quite iron rich. It is also known as taconite. Jaspillite is also a mixture of hematite and quartz common in the banded iron formation rocks of Proterozoic and Archaean age in the Canadian shield.
Additional recommended knowledge
Jaspillite is also formed as exhalative chemical sediments in certain lead-zinc deposits, and as a hydrothermal alteration facies around submarine volcanism.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Jaspillite". A list of authors is available in Wikipedia.|