Definition
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Basanite is a black basaltic rock which mainly contains plagioclase, augite, olivine and nepheline and is formerly used as a touchstone
Origin
Western Australia, Minnesota
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Discoverer
Johann Gottlob Lehmann
Unknown
Etymology
From its formation process
From Latin basanites + -ite
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock