Hornblendite and Pegmatite Types and Facts
Types
Hornblende Gabbro and Hornblende Peridotite
Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite
Features
Clasts are smooth to touch, Matrix variable, Surfaces are often shiny
Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz
Archaeological Significance
Types of Hornblendite and Pegmatite
Some rocks according to their use or texture are classified into different types. Know more about Hornblendite Texture and Pegmatite Texture. Types of Hornblendite are Hornblende Gabbro and Hornblende Peridotite whereas the types of Pegmatite are Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite.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. Hornblendite and Pegmatite 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. Hornblendite and Pegmatite were for creating petroglyphs.