Pegmatite and Shale Types and Facts

Pegmatite

Shale

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1 Types

1.1 Types

Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite

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

1.2 Features

Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz

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

1.3 Archaeological Significance

1.3.1 Monuments

Not Yet Used

Used

1.3.2 Famous Monuments

Not Applicable

Jantar Mantar in India

1.3.3 Sculpture

Used

1.3.4 Famous Sculptures

Data Not Available

1.3.5 Pictographs

Not Used

Used

1.3.6 Petroglyphs

Not Used

Used

1.3.7 Figurines

Used

1.4 Fossils

Absent

Present

Types of Pegmatite and Shale

Some rocks according to their use or texture are classified into different types. Know more about Pegmatite Texture and Shale Texture. Types of Pegmatite are Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite 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. Pegmatite was not used to create pictographs whereas Shale is used to create 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. Pegmatite was not used to create petroglyphs whereas Shale was used to create petroglyphs.