What type of rock is Jaspilite?
Jaspilite is a chemical rock formed similar to chert, but is generally quite iron rich. It is also known as jasper taconite. Jaspilite 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.
What is Jaspilite made of?
Jaspilite is a banded compact siliceous rock consisting of interbanded jasper (red chert) and hematite. In Australia the term jaspilite was commonly applied to Precambrian iron formations of Western Australia, but banded iron formation (BIF) is now generally used.
Where is Jaspilite found?
Jaspilite (banded magnetite-jasper) from the Vulcan Iron-Formation (Paleoproterozoic, ~2.1 billion years) in the Menominee Iron Range, Upper Peninsula of Michigan, USA. Vulcan Fe-Fm. BIFs are mined in the vicinity of the towns of Vulcan, West Vulcan, and Iron Mountain.
Is Jaspilite metamorphic?
A siliceous or metamorphosed banded ironstone, including iron-rich quartzites, interbedded jasper and iron oxides. They are usually banded mixtures of quartz and magnetite and/or hematite. Also a trade name for red, hematitized varieties of jasper.
Is Jaspilite a sedimentary rock?
Jaspillite, or jaspilite, is a chemical rock formed similar to chert. It is common in the banded iron formation rocks of Proterozoic and Archaean age in the Canadian shield of North America. Jaspillite is also a sedimentary rock.in certain lead-zinc ore deposits. It is used as a gemstone.
What is Jaspilite used for?
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.
Is banded iron jasper?
Over long periods of time the sea bed layers of iron oxides became hematite or magnetite rich in iron. The specific banded rock is often called banded jasper with jasper being the red colored chert due to some iron content. However, cherts can vary from nearly white to almost black.
What is Mary Ellen jasper?
At over 1.88 billion years old, this sub variety of Jasper is a beautiful red, pink to green material containing red, green to white swirls of Precambrian fossil algae also known as Stromatolites. This primitive species is often credited with providing our oxygen-rich environment we enjoy today.
What is Mary Ellen Jasper?
What are taconite pellets used for?
The taconite pellets are loaded into ore ships. These ships sail on the Great Lakes to Gary, Indiana, Cleveland, Ohio and other steel-making towns. The taconite pellets are brought to the steel mills to be melted down into steel.
What is Tiger Iron Stone?
Tiger iron (or tigereye matrix) is a quartz-lignite aggregate gemstone containing layers of vibrant golden tigereye, metallic grey hematite and rich, red jasper. Tiger iron is also sometimes called mugglestone, to the surprise and delight of Harry Potter fans everywhere!
Are banded iron formations still forming today?
Some of the Earth’s oldest rock formations, which formed about 3,700 million years ago (Ma), are associated with banded iron formations. Banded iron formations are thought to have formed in sea water as the result of oxygen production by photosynthetic cyanobacteria….Banded iron formation.
| Composition | |
|---|---|
| Secondary | Other |