Obsidian vs Gneiss

Obsidian vs Gneiss 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 Gneiss 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. Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. 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 Gneiss information and Obsidian vs Gneiss characteristics in the upcoming sections.

Obsidian vs Gneiss 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 Gneiss characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Obsidian and Properties of Gneiss. Learn more about Obsidian vs Gneiss in the next section. The interior uses of Obsidian include Decorative aggregates and Interior decoration whereas the interior uses of Gneiss include Countertops, Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Obsidian and Gneiss, 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 Gneiss include As dimension stone.

More about Obsidian and Gneiss

Here you can know more about Obsidian and Gneiss. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Obsidian and Gneiss consists of mineral content and compound content. The mineral content of Obsidian includes and mineral content of Gneiss includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Obsidian vs Gneiss, 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, Gneiss is available in black, brown, pink, red, white colors. Appearance of Obsidian is Shiny and that of Gneiss is Foliated. Properties of rock is another aspect for Obsidian vs Gneiss. The hardness of Obsidian is 5-5.5 and that of Gneiss is 7. The types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian whereas types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Obsidian and Gneiss is white. The specific heat capacity of Obsidian is 0.92 kJ/Kg K and that of Gneiss is 0.70 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 Gneiss is heat resistant, pressure resistant, scratch resistant, wear resistant.