jaspillite, jaspilite, also, called, itabirite, jasper, taconite, chemical, rock, formed, similar, chert, generally, quite, iron, rich, typically, banded, mixture, hematite, quartz, common, banded, iron, formation, rocks, proterozoic, archaean, canadian, shiel. 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 Jaspilite sample from Minas Gerais BrazilJaspillite 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 References edit Sinkankas John 1959 Gemstones of North America Vol 1 p 345 Jaspillite and Taconite etymology Mindat org data Rob Kanen 2001 The Hamerseley Basin nbsp This sedimentary rock related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Jaspillite amp oldid 1166616284, wikipedia, wiki, book, books, library,
