Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
History
Origin
Central Europe
Western Australia, Minnesota
Discoverer
Unknown
Newton Horace Winchell
Etymology
From Latin granulum, a little grain or fine grained
From the name of Taconic Mountains in New England
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
-
-
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock