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 Hornfels and Obsidian Reserves. 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. 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. 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 Hornfels vs Obsidian information and Hornfels vs Obsidian characteristics in the upcoming sections.
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. Hornfels vs Obsidian characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Obsidian. Learn more about Hornfels vs Obsidian in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Obsidian include Decorative aggregates and Interior decoration. Due to some exceptional properties of Hornfels and Obsidian, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Obsidian include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.
Here you can know more about Hornfels and Obsidian. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Obsidian consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Obsidian is not available. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Obsidian, the texture, color and appearance plays an important role in determining the type of rock. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas, Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Hornfels is Dull and that of Obsidian is Shiny. Properties of rock is another aspect for Hornfels vs Obsidian. The hardness of Hornfels is 2-3 and that of Obsidian is 5-5.5. The types of Hornfels are Biotite hornfels whereas types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels is unknown while that of Obsidian is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Obsidian is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornfels is heat resistant, impact resistant, pressure resistant whereas Obsidian is heat resistant, impact resistant.