Obsidian vs Rapakivi Granite

Obsidian vs Rapakivi Granite 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 Rapakivi Granite 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. Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase. 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 Rapakivi Granite information and Obsidian vs Rapakivi Granite characteristics in the upcoming sections.

Obsidian vs Rapakivi Granite 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 Rapakivi Granite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Obsidian and Properties of Rapakivi Granite. Learn more about Obsidian vs Rapakivi Granite in the next section. The interior uses of Obsidian include Decorative aggregates and Interior decoration whereas the interior uses of Rapakivi Granite include Bathrooms, Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads. Due to some exceptional properties of Obsidian and Rapakivi Granite, 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 Rapakivi Granite include As dimension stone.

More about Obsidian and Rapakivi Granite

Here you can know more about Obsidian and Rapakivi Granite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Obsidian and Rapakivi Granite consists of mineral content and compound content. The mineral content of Obsidian includes and mineral content of Rapakivi Granite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Obsidian vs Rapakivi Granite, 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, Rapakivi Granite is available in black, grey, orange, pink, white colors. Appearance of Obsidian is Shiny and that of Rapakivi Granite is Veined or Pebbled. Properties of rock is another aspect for Obsidian vs Rapakivi Granite. The hardness of Obsidian is 5-5.5 and that of Rapakivi Granite is 6-7. The types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian whereas types of Rapakivi Granite are Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Obsidian and Rapakivi Granite is white. The specific heat capacity of Obsidian is 0.92 kJ/Kg K and that of Rapakivi Granite 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 Rapakivi Granite is heat resistant, wear resistant.