1 Definition
1.1 Definition
Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite
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
USA
Western Australia, Minnesota
1.2.2 Discoverer
Bayley
Newton Horace Winchell
1.3 Etymology
From its occurrence at Litchfield, Maine, USA
From the name of Taconic Mountains in New England
1.4 Class
Igneous 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
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock