Obsidian vs Hornfels

Obsidian vs Hornfels 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 Hornfels 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. Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. 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 Hornfels information and Obsidian vs Hornfels characteristics in the upcoming sections.

Obsidian vs Hornfels 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 Hornfels characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Obsidian and Properties of Hornfels. Learn more about Obsidian vs Hornfels in the next section. The interior uses of Obsidian include Decorative aggregates and Interior decoration whereas the interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration. Due to some exceptional properties of Obsidian and Hornfels, 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 Hornfels include For road aggregate, Roadstone.

More about Obsidian and Hornfels

Here you can know more about Obsidian and Hornfels. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Obsidian and Hornfels consists of mineral content and compound content. The mineral content of Obsidian is not available and mineral content of Hornfels includes Andalusite. You can also check out the list of all Igneous Rocks. When we have to compare Obsidian vs Hornfels, 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, Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. Appearance of Obsidian is Shiny and that of Hornfels is Dull. Properties of rock is another aspect for Obsidian vs Hornfels. The hardness of Obsidian is 5-5.5 and that of Hornfels is 2-3. The types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian whereas types of Hornfels are Biotite hornfels. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Obsidian is white while that of Hornfels is unknown. The specific heat capacity of Obsidian is 0.92 kJ/Kg K and that of Hornfels is 0.84 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 Hornfels is heat resistant, impact resistant, pressure resistant.