1 Definition
1.1 Definition
Marble is a non-foliated metamorphic rock which is composed of recrystallized carbonate which is formed when limestone is exposed to high temperatures and pressures over a long time
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica
1.2 History
1.2.1 Origin
Egypt
Western Australia, Minnesota
1.2.2 Discoverer
Unknown
Newton Horace Winchell
1.3 Etymology
From the Greek marmaros, shining stone and also from the English word marmoreal meaning marble-like
From the name of Taconic Mountains in New England
1.4 Class
Metamorphic Rocks
Sedimentary Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock