Obsidian vs Pegmatite

Obsidian vs Pegmatite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Obsidian and Pegmatite Reserves. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Obsidian vs Pegmatite information and Obsidian vs Pegmatite characteristics in the upcoming sections.

Obsidian vs Pegmatite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Obsidian vs Pegmatite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Obsidian and Properties of Pegmatite. Learn more about Obsidian vs Pegmatite in the next section. The interior uses of Obsidian include Decorative aggregates and Interior decoration whereas the interior uses of Pegmatite include Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Obsidian and Pegmatite, they have various applications in construction industry. The uses of Obsidian in construction industry include Arrowheads, Cutting tool, Knives, Scrapers, Spear points and that of Pegmatite include As dimension stone, Building houses or walls, Construction aggregate, For road aggregate, Landscaping.

More about Obsidian and Pegmatite

Here you can know more about Obsidian and Pegmatite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Obsidian and Pegmatite consists of mineral content and compound content. The mineral content of Obsidian includes and mineral content of Pegmatite includes Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz. You can also check out the list of all Igneous Rocks. When we have to compare Obsidian vs Pegmatite, the texture, color and appearance plays an important role in determining the type of rock. Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors whereas, Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. Appearance of Obsidian is Shiny and that of Pegmatite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Obsidian vs Pegmatite. The hardness of Obsidian is 5-5.5 and that of Pegmatite is 7. The types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian whereas types of Pegmatite are Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Obsidian and Pegmatite is white. The specific heat capacity of Obsidian is 0.92 kJ/Kg K and that of Pegmatite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Obsidian is heat resistant, impact resistant whereas Pegmatite is heat resistant, impact resistant, pressure resistant.