Pegmatite and Diabase Types and Facts
Types
Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite
Dolerite
Features
Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz
Smooth to touch
Archaeological Significance
Famous Monuments
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Stonehenge in English county of Wiltshire
Types of Pegmatite and Diabase
Some rocks according to their use or texture are classified into different types. Know more about Pegmatite Texture and Diabase Texture. Types of Pegmatite are Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite whereas the types of Diabase are Dolerite.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 Diabase 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 Diabase were for creating petroglyphs.