Pegmatite and Gneiss Types and Facts

Pegmatite

Gneiss

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Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite

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

Absent

Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.

Generally rough to touch, Is one of the oldest rock

Konark Sun Temple in India, Washington Monument, US

Absent

Types of Pegmatite and Gneiss

Some rocks according to their use or texture are classified into different types. Know more about Pegmatite Texture and Gneiss Texture. The types of Pegmatite and Gneiss are .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 and Gneiss were 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. Pegmatite and Gneiss were for creating petroglyphs.