1 Definition
1.1 Definition
Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age
Felsite is a very fine grained volcanic rock that may or may not contain larger crystals and light colored rock that typically requires petrographic examination or chemical analysis for more precise definition
1.2 History
1.2.1 Origin
Western Australia, Minnesota
Unknown
1.2.2 Discoverer
1.3 Etymology
From its formation process
From English feldspar and -ite
1.4 Class
Sedimentary Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock