Nepheline Syenite and Shale Types and Facts

Nepheline Syenite

Shale

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1 Types

1.1 Types

Borolanite and Litchfieldite

Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale

1.2 Features

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

Easily splits into thin plates, Generally rough to touch, Very fine grained rock

1.3 Archaeological Significance

1.3.1 Monuments

Used

1.3.2 Famous Monuments

Data Not Available

Jantar Mantar in India

1.3.3 Sculpture

Used

1.3.4 Famous Sculptures

Data Not Available

1.3.5 Pictographs

Used

1.3.6 Petroglyphs

Used

1.3.7 Figurines

Used

1.4 Fossils

Absent

Present

Types of Nepheline Syenite and Shale

Some rocks according to their use or texture are classified into different types. Know more about Nepheline Syenite Texture and Shale Texture. Types of Nepheline Syenite are Borolanite and Litchfieldite whereas the types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale.During historic times, some rocks depending on their hardness were used to create Pictographs and Petroglyphs. Rocks which are hard were generally not used. Pictographs are paintings or drawings that have been placed or created on the surface of rock. Nepheline Syenite and Shale were used for creating pictographs. Petroglyph is an image which is carved into a rock. These are images created by removing part of a rock surface by incising, picking, carving or abrading, as a form of rock art. Nepheline Syenite and Shale were used for creating petroglyphs.